SSC JE (EE) Mock Test- 7

QUESTION: 1

In a certain office, (1/3) of the workers are women, (1/2) of the women are married, and (1/3) of the married women have children. If (3/4) of the men are married and (2/3) of the married men have children, then what part of workers are without children?

A. 5/18
B. 4/9
C. 11/18
D. 17/36

Solution: Let the total number of employees be (x).

Total number of women in the company

The total number of women are married.

The total number of married women who have Children

Total number of men in the company

The total number of men are married

The total number of married men who have children

From equation (1) and (2)

Total number of workers without children

The total number of the worker without children are of the total number of workers.

QUESTION: 2

From the given alternative words, select the word which can be formed using the letters of the given word:
'DETERMINATION'

A. DECLARATION
B. NATIONAL
C. TERMINATED
D. DEVIATION

Solution: Only option c (TERMINATED) can be formed by this word.

QUESTION: 3

In the given options, which option is a mirror image of the question image?
Question figure:
Answer figures:

A. A
B. B
C. C
D. D

Solution:

QUESTION: 4

How many rectangles are there in the given diagram?

A. 4
B. 7
C. 9
D. 18

Solution: 18 rectangles are there in the given diagram.

QUESTION: 5

Direction: In each of the following questions, select the related word/letters/number from the given alternatives.

123 : 4 : : 726 : ?

A. 14
B. 12
C. 23
D. 26

Solution:

12/3 = 4,

72/6 = 12

So the answer is 12.

QUESTION: 6

Direction: In each of the following questions, select the related word/letters/number from the given alternatives.

Writer : Pen : : ?

A. Needle: Tailor
B. Artist: Brush
C. Painter: Canvas
D. Teacher : Class

Solution: The writer uses a pen to write so, Artist uses a brush to make a painting.

QUESTION: 7

Direction : In each of the following questions, select the related word/letters/number from the given alternatives.

6 : 64 : : 11 : ?

A. 144
B. 169
C. 121
D. 124

Solution:

(6:64 ⇒ 6:(62)² = 64)

(11:? ⇒ 11:(112)² = 169)

QUESTION: 8

Direction: In each of the following questions, select the related word/letters/number from the given alternatives.

FGHI: OPQR:: BCDE:?

A. KLMJ
B. KLMN
C. IUVW
D. STUW

Solution:

QUESTION: 9

Direction: In each of the following questions, select the related word/letters/number from the given alternatives.

Binding : Book::?

A. criminal: gang
B. display: museum
C. artist: carpenter
D. frame: picture

Solution: A binding surrounds a book; a frame surrounds a picture.

QUESTION: 10

Direction: In each of the following questions, select the related word/letters/number from the given alternatives.

17 : 60 : : 20 : ?

A. 57
B. 69
C. 81
D. 93

Solution:

⇒ 17:(173) x 3

⇒ 17:(20) x 3

⇒ 17:60

Similarly, 20:(203) x 3

⇒ 20:(23) x 3

⇒ 20:69

QUESTION: 11

Direction: In each of the following questions, select the related word/letters/number from the given alternatives.

NUMBER: UBREMN: : ALGEBRA:?

A. LRBAGEA
B. BARLAGE
C. LERAGBA
D. LERABGA

Solution:

QUESTION: 12

Direction: In each of the following questions, select the related word/letters/number from the given alternatives.

PNLJ : IGEC:: VTRP:?

A. OMKI
B. RSTU
C. QSRC
D. STUW

Solution:

QUESTION: 13

Direction: In each of the following questions, select the related word/letters/number from the given alternatives.

BDAC : FHEG : : NPMO : ?

A. RQTS
B. QTRC
C. TRQS
D. RTQS

Solution:

QUESTION: 14

Ganesh cycles towards South-West a distance of 8m, then he moves towards East a distance of 20m. Then, he moves towards North-East, a distance of 8m, then he moves towards West, a distance of 6m. From there, he moves towards North-East, a distance of 2m. Then he moves towards West, a distance of 4 m and then towards South-West 2m and stops at that point. How far is he from the starting point?

A. 12m
B. 10m
C. 8m
D. 6m

Solution:

From diagram distance from starting point

= 20 - 6 + 4

= 20 - 10 = 10m

QUESTION: 15

Some equations have been solved based on a certain system. Find the correct answer for the unsolved equation on that basis.

If 9 * 7 = 32, 13 * 7 = 120, 17 * 9 = 208, then 19 * 11 = ?

A. 150
B. 180
C. 240
D. 210

Solution: The pattern of equation is

(9 + 7)(9 - 7) = 16 x 2 = 32

(13 + 7)(13 - 7) = 20 x 6= 120

(17 + 9)(17 - 9) = 26 x 8 = 208

(19 + 11)(19 - 11) = 30 x 8 = 240

QUESTION: 16

Ravi has spent a quarter (1/4) of his life as a boy. One-fifth (1/5) as a youth, one-third (1/3) as a man, and thirteen (13) years in old age. What is his present age?

A. 70 years
B. 80 years
C. 60 years
D. 65 years

Solution: Let, present age = x

According to question

So, the present age is 60 years.

QUESTION: 17

If a man of a moped starts from a point and rides 4 km South, then turns left and rides 2 km to turn again to the right to ride 4 km more, towards which direction is he moving?

A. North
B. West
C. East
D. South

Solution:

QUESTION: 18

In the following questions, a number of letters are skipped in between by a particular rule. Which of the following series observes the rule?

A. ABFGJK
B. ACFJOU
C. MPQSTV
D. ADFHJL

Solution:

QUESTION: 19

In which option question diagram is fulfilled in the option diagrams.

Question figure:

Answer figures:

A. A
B. B
C. C
D. D

Solution:

QUESTION: 20

Out of 100 families in the neighbourhood, 50 have radios, 75 have TVs and 25 have VCRs. Only 10 families have all three, and each VCR owner also has a TV. If some families have radio only, how many have the only TV?

A. 30
B. 35
C. 40
D. 45

Solution: The ven diagram of given data is:-

Families have T.V. only

= 75 - 25 + 10 = 40

QUESTION: 21

Find the wrong number in the series.

6, 9, 15, 22, 51, 99

A. 99
B. 51
C. 22
D. 15

Solution: All the number divide by 3 except option (c)

QUESTION: 22

At what time are the hands of the clock together between 6 and 7?

A. minutes past 6
B. minutes past 6
C. minutes past 6
D. minutes past 6

Solution: At 6 o’clock, the hour hand is at 6, and the minute hand is at 12. It means that they are 30 minutes space apart.

30 minutes gain =

Therefore, the hands will be together at minutes part 6.

QUESTION: 23

If '-' stand for {{chart?cht=tx&chl=\(}} '+' stand for 'x', {{chart?cht=tx&chl=\(}} , for '-' and 'x' for '+' , which one of the following equation is correct ?

A. (30 - 65 x 4 ÷ 2 = 27)
B. (306 - 5 ÷ 4 x 2 = 30)
C. (30 x 6 ÷ 5 - 42 = 32)
D. (30 ÷ 6 x 54 - 2 = 40)

Solution: The correct equation is (30 ÷ 6 x 54 - 2 = 27)

⇒ 5 x 54 - 2 = 27

⇒ 254 - 2 = 27

⇒ 29 - 2 = 27

⇒ 27 = 27

QUESTION: 24

Arrange the following words as per order in the dictionary.

1- Dissident

2- Dissolve

3- Dissent

4- Dissolute

5- Dissolution

A. 3,1,4,5,2
B. 3,2,1,4,5
C. 3,1,4,2,5
D. 3,2,4,5,1

Solution: Dissent → Dissident → Dissolute → Dissolution → Dissolve

QUESTION: 25

Forecast the Growth Rate for the year 1995 from the following data :

A. 7.8
B. 8.6
C. 9.7
D. 9.9

Solution: The given growth rate series is: -

3.5, 3.7, 4.1, 4.9, 6.5, ?

The difference between these consecutive number is:

0.2, 0.4, 0.8, 1.6

So, that next number is 3.2 to be added in 6.5.

6.5 + 3.2 = 9.7

QUESTION: 26

Direction: In each of the following questions, select the one which is different from the other three.

(A) JKOP

(B) MNST

(C) CABD

(D) OPWX

A. A
B. B
C. C
D. D

Solution:

QUESTION: 27

Direction: In each of the following questions, select the one which is different from the other three.

(A) Flute

(B) Violin

(C) Guitar

(D) Sitar

A. A
B. B
C. C
D. D

Solution: All the instruments have strings to play except option (a).

QUESTION: 28

Direction: In each of the following questions, select the one which is different from the other three.

(A) 156

(B) 201

(C) 273

(D) 345

A. A
B. B
C. C
D. D

Solution: The sum of digits is 12 except option (b).

QUESTION: 29

In each of the following questions, select the one which is different from the other three.

(A) Prod

(B) Sap

(C) Jab

(D) Thrust

A. A
B. B
C. C
D. D

Solution: All words have a meaning to poke other than sap.

QUESTION: 30

In each of the following questions, select the one which is different from the other three.

(A) CAFD

(B) TSWV

(C) IGLJ

(D) OMRP

A. A
B. B
C. C
D. D

Solution:

QUESTION: 31

Direction: In each of the following questions, select the one which is different from the other three.

(A) 162

(B) 405

(C) 567

(D) 644

A. A
B. B
C. C
D. D

Solution: All options divided by 3 except option (d)

QUESTION: 32

Among her children, Ganga's favourites are Ram and Rekha. Rekha is the mother of Sharat, who is loved most by his uncle Mithun. The head of the family is Ram Lal, who is succeeded by his son Gopal and Mohan. Gopal and Ganga have been married for 35 years and have 3 children. What is the relation between Mithun and Mohan?

A. Uncle
B. Son
C. Brother
D. No relation

Solution:

QUESTION: 33

Direction: What will come in place of the question mark (?) in the following number series?

8, 15, 36, 99, 288, ?

A. 368
B. 676
C. 885
D. 908

Solution: 8 x 3 - 9 = 15

15 x 3 - 9 = 36

36 x 3 - 9 = 99

99 x 3 - 9 = 288

298 x 3 - 9 = 885

QUESTION: 34

Direction: What will come in place of the question mark (?) in the following number series?

4, 196, 16, 169, ?, 144, 64

A. 21
B. 81
C. 36
D. 32

Solution:

Also, (2)², (4)², (6)², (8)²

Therefore, 6²= 36

QUESTION: 35

In a row of girls, Kamla is 9^th from the left, and Veena is 6^th from the right. If they interchange their positions, Kamla becomes 25^th from the left. How many girls are there in the row?

A. 34
B. 36
C. 40
D. 41

Solution: Kamal location from left = 9th

Veena location from right = 16th

Kamal location from left = 25th

So, that Kamal location from right = 16th

Total no. student = 25 + 16 - 1 = 40

QUESTION: 36

Five boys A, B, C, D, E are sitting in a park in a circle. A is facing South-West, D is facing South-East, B and E are right opposite A and D respectively, and C is equidistant between D and B. Which direction is C facing?

A. West
B. South
C. North
D. East

Solution:

QUESTION: 37

From the given alternative words, select the word which cannot be formed using the letters of the given word: 'CONCENTRATION.'

A. CONCERN
B. NATION
C. TRAIN
D. CENTRE

Solution: All the given options can be formed from the letter CONCENTRATION except Centre because it has 'E' twice.

QUESTION: 38

Two statements are given, followed by four inferences. Select the most appropriate alternative.

Statements:

India is becoming industrialised.

Pollution is a problem associated with industrialisation.

Inferences :

I. All industrial centres are polluted.

II. India is polluted.

III. Polluted nations are industrialised.

IV. India may become polluted.

A. All are appropriate
B. None is appropriate
C. Only IV is appropriate
D. Only II is appropriate

Solution: Only IV is appropriate.

QUESTION: 39

Direction: In each of the following questions, a series is given with one term missing. Choose the correct alternatives from the given ones that will complete the series.

A. 60
B. 68
C. 55
D. 65

Solution: 9 x 2 -1 = 17

17 x 2 - 1 = 33

33 x 2 - 1 = 65

QUESTION: 40

Direction: In each of the following questions, a series is given with one term missing. Choose the correct alternatives from the given ones that will complete the series.

A. 8
B. 3
C. 6
D. 36

Solution: 2 x 7 x 9 = 126

7 x 3 x 8 = 168

9 x 4 x 6 = 216

QUESTION: 41

A piece of paper is folded and cut as shown below in the question figures. From the given answer figures, indicate how it will appear when opened.

Question figure:

Answer figures:

A. A
B. B
C. C
D. D

Solution:

QUESTION: 42

Find out the pair of numbers that do not belong to the group for lack of common property.

A. 11-115
B. 10-90
C. 9-72
D. 8-56

Solution: Out of the given options, 11-115 is an odd one because, in all other options, 2nd term is the multiple of 1st term, i.e., 10-90 → 10 × 9 = 90

9-72 → 9 × 8 = 72

8-56 → 8 × 7 = 56

But in 11-115, 115 is not a multiple of 11.

Thus 11-115 is an odd one.

QUESTION: 43

If a certain code HYDROGEN is written as JCJZYSSD, how can ANTIMONY be written in that code?

A. CPVKOQPA
B. CRZQWABO
C. ERXMQSRC
D. GTZOSUTE

Solution:

QUESTION: 44

Which one set of letters, when sequentially placed at the gaps in the given letter series, shall complete it?

_ cd _ cab _ baca _ cba _ ab

A. cabcb
B. abccb
C. bacbc
D. bcaba

Solution: As per the given question, the letter series follows the below pattern.

b c b

After completing the pattern, we will get complete letter series.

b c b / a c a / b c b / a c a / b cb / a c a / b

QUESTION: 45

Direction: In each of the following questions, a series is given with one term missing. Choose the correct alternatives from the given ones that will complete the series.

reoc, pgme, nikg, lkii,?

A. acef
B. jmgk
C. efgh
D. wxyz

Solution:

QUESTION: 46

Direction: In each of the following questions, a series is given with one term missing. Choose the correct alternatives from the given ones that will complete the series.

X Y Z C B A U V W F E ??

A. DR
B. RS
C. DS
D. MN

Solution:

QUESTION: 47

If DELHI coded as 73541 and CALCUTTA as 82589662, then how can CALICUT be coded?

A. 5279431
B. 5978013
C. 8251896
D. 8543691

Solution: D E L H I- 7 3 5 4 1

C A L C U T T A- 8 2 5 8 9 6 6 2

C A L I C U T- 8 2 5 1 8 9 6

QUESTION: 48

Which one of the given responses would be a meaningful order of the following words?

1- Major

2- Captain

3- Colonel

4- Brigadier

5- Lt. General

A. 5,4,3,1,2
B. 5,1,4,2,3
C. 4,5,1,3,2
D. 3,4,2,5,1

Solution: Lt. General → Brigadier → Colonel → Major → Captain

QUESTION: 49

Suresh was born on 4^th October 1999. Shashikanth was born 6 days before Suresh. The Independence day of that year fell on Sunday. Which day was Shahikanth born?

A. Tuesday
B. Wednesday
C. Monday
D. Sunday

Solution: Suresh data of birth = 4^th Oct 1999

Shashikant data of Birth = 28 Sep 1999

Given, 15 Aug 1999 is Sunday.

Therefore, Sunday dated between

15 August and 28 October on

(i) 22 August

(ii) 29 August

(iii) 5 September

(iv) 12 September

(v) 19 September

(vi) 26 September

So, that 28 September is Tuesday.

QUESTION: 50

Which of the following diagrams represents the relationship among Sun, Moon, and Star?

A. A
B. B
C. C
D. D

Solution:

QUESTION: 51

The opportunity cost of a factor of production is-

A. what it is earning is its present use.
B. what it can earn in the long period.
C. what has to be paid to retain it in its present
D. what it can earn in some other use.

Solution: The opportunity cost of a choice is the value of the best alternative forgone in a situation in which a choice needs to be made between several mutually exclusive alternatives given limited resources. It is equivalent to what a factor could earn for the firm in alternative uses.

QUESTION: 52

Investment multiplier shows the effect of investment on-

A. Employment
B. Savings
C. Income
D. Consumption

Solution: An investment multiplier is simply the multiplier effect of an injection of investment into an economy. The multiplier effect refers to the idea that an initial spending rise can lead to an even greater increase in national income.

QUESTION: 53

The climatic zones are classified on the basis of-

A. distance from the equator
B. elevation
C. rainfall
D. distance from the sea

Solution: The climatic zones are classified on the basis of maximum and minimum temperatures and the temperature range, as well as the total and seasonal distribution of precipitation. Based on these parameters, the most commonly used classification scheme was originally developed by Wladimir Koppen.

QUESTION: 54

King Kharvela was the greatest ruler of the Chedi Dynasty of-

A. Chlamandalam
B. Kalinga
C. Kannauj
D. Purushpur

Solution: Kharvela was the third and greatest emperor of the Chedi dynasty of Kalinga.

QUESTION: 55

The curcumin is isolated from-

A. Garlic
B. Turmeric
C. Sunflower
D. Rose flower

Solution: Curcumin is a bright yellow chemical produced by plants of the Curcuma longa species. It is the principal curcuminoid of turmeric.

QUESTION: 56

Which one of the following is issued by the court in case of illegal detention of a person?

A. Habeas corpus
B. Mandamus
C. Certiorari
D. Quo Warranto

Solution: The Literal meaning of 'Habeas Corpus' is "we may have the body.’ The court issued an order to a person who has illegally detained the other person directing him to produce such a person in the court to examine detention. The person is then freed if the detention is found to be illegal. Hence, this writ is the bulwark of an Individual's liberty against illegal detention.

QUESTION: 57

By which Charter Act, the East India Company's monopoly of trade with China came to an end?

A. Charter Act of 1793
B. Charter Act of 1813
C. Charter Act of 1833
D. Charter Act of 1853

Solution: The Charter Act of 1813; ended the trade monopoly of East India Company in India.

QUESTION: 58

In the resistance colour code, the fourth band, signifies-

A. tolerance level
B. power of ten
C. the total value of resistance
D. the material of the resistor

Solution: The first and second band represent the numerical value of the resistor, and the colour of the third band specify the power-of-ten multiplier. Reading the resistor from left to right, the fourth band represents tolerance.

QUESTION: 59

Sun Lab's Java Car uses_____technology to keep your car networked with the world outside.

A. embedded
B. spam
C. smart Screen
D. access point

Solution: The Sun Labsskunkworkss has found the use of computers and networks in the car, using Java, Solaris/Linux, and embedded systems. The car track is embedded with real-time Java sensor technology.

QUESTION: 60

Who is the Chairperson of the National Communication for the protection of Child Rights?

A. Lella Samson
B. Shantha Sinha
C. Mamta Sharma
D. Priyank Kanoongo

Solution: Priyank Kanoongo is the current Chairperson of the National Communication for the protection of Child Rights

QUESTION: 61

What of the following does not form a part of the foreign exchange reserves of India?

A. Gold
B. SDRs
C. Foreign currency assets
D. Foreign currency and securities held by the banks and corporate bodies

Solution: Foreign exchange reserves are assets held by central banks and monetary authorities, usually in different reserve currencies, mostly the United States dollar. However, the term in popular usage com also adds gold reserves and special drawing rights (SDRs). And International Monetary Fund (IMF) reserve positions.

QUESTION: 62

The term reactor referred to in wastewater treatment is-

A. Vessel
B. Setting tank
C. Clarifier
D. Aeration tank

Solution: Reactors are industrial processing tanks for the treatment of wastewater. The tanks have a “flow-through” system, with raw wastewater (influent) coming in at one end and treated water (effluent) flowing out the other. While one tank is in settle/ decant mode, the other is aerating and filling.

QUESTION: 63

Neutrons are slowed down in a nuclear reactor by-

A. Fissionable material
B. Moderator
C. Control rods
D. Cooling system

Solution: Neutron moderators are a type of material in a nuclear reactor that works to slow down the fast neutrons (produced by splitting atoms in fissile compounds like uranium-235) them more effective in fission chain reaction.

QUESTION: 64

Which of the example for Plural Executive?

A. U.S.A
B. U.K.
C. India
D. Switzerland

Solution: A plural executive is a system of government where several, or all, of the administrative branch officers, are elected in their own right. The executive power of the Swiss confederation is vested in a plural executive consisting of seven members known as the Federal Council. According to Article 177 of the Swiss constitution, the Federal Council is a collegial body in which every member enjoys equal power and status.

QUESTION: 65

Who was the first Indian woman winner of the 'Miss Universe' award?

A. Reeta Faria
B. Aiswarya Rai
C. Lara Datta
D. Sushmita Sen

Solution: In 1994, Sushmita Sen won Miss Universe 1994, becoming the country's first-ever Miss Universe titleholder.

QUESTION: 66

Respiration is regarded as a-

A. Synthetic Process
B. Catabolic Process
C. Anabolic Process
D. Reduction Process

Solution: The breakdown of glucose molecules provides energy. Respiration is referred to as a catabolic process. Both Glucose is broken down during the process & energy is released as heat during the process.

QUESTION: 67

Which is the only country whose postage stamps do not bear its name?

A. U.S.A
B. U.K.
C. Japan
D. Pakistan

Solution: Britain is the only country whose postage stamps do not feature the name of the country issuing them. This is because Britain was the first country to produce stamps.

QUESTION: 68

Which one of the following is wrongly paired? Folk Dance State-

A. Kerala - Karagam
B. Gujarat - Garba
C. Uttar Pradesh - Nautanki
D. West Bengal - Jatna

Solution: The Karagam Dance is s an ancient folk dance of Tamil Nadu performed in praise of the rain goddess Mariamman. The performers balance the water pot on their heads very beautifully. This dance is considered to have been originated in Thanjavur.

QUESTION: 69

Which of the following teams won the 2019 IPL?

A.
Chennai Super Kings
B.
Mumbai Indiansx
C.
Delhi Capitals
D.
Kolkata Knight Riders

Solution:

Mumbai Indians won the 2019 IPL.
Mumbai Indians won the 2019 Indian Premier League after defeating Chennai Super Kings by 1 run in a last-ball thriller in Hyderabad on 12th May 2019.

QUESTION: 70

Membrane lipids of chill-sensitive plants contain-

A. the low proportion of saturated fatty acids.
B. the low proportion of unsaturated fatty acids.
C. an equal proportion of saturated and unsaturated fatty acids.
D. High proportion of unsaturated fatty acids.

Solution: The membranes of chill-sensitive plants have been found to have about a 2:1 ratio of unsaturated to saturated fatty acids. It has been seen that the proportion of unsaturated membrane fatty acids increases, and the critical temperature decreases when chill-sensitive plants are acclimated to a low temperature.

QUESTION: 71

Recently in Nov 19, The Supreme Court declared which body as public authority under RTI act, 2005?

A.
Political Parties
B.
Regional Political Parties
C.
Office of CJI
D.
Office of Prime Minister

Solution:

Recently in November 2019, Supreme Court has ruled that the office of CJI is a public authority under the RTI act, 2005.

A five-judge Constitution Bench headed by the then Chief Justice Ranjan Gogoi gave the ruling.
The verdict stated that- RTI cannot be used as a tool of surveillance and that judicial independence must be kept in mind while dealing with transparency.

QUESTION: 72

An element of atomic no. 29 belongs to-

A. s-block
B. d-block
C. p-block
D. f-block

Solution: Copper (Cu) has an atomic number of 29. Copper belongs to the d-block, which is the collective name for Groups 3 to 12 in the periodic table. Most of the d-block elements are considered to be metals, with a common lustrous metallic appearance.

QUESTION: 73

Which team won the Champions League- Twenty (CLT-20) Trophy in 2012?

A. Sydney Sixers
B. Highveld Lions
C. Nashua Titans
D. Delhi Dare Devils

Solution: The 2012 Champions League Twenty 20, held in South Africa, was won by Sydney Sixers. The team defeated the High veld Lions in the final.

QUESTION: 74

The idea of federation was first proposed in-

A. Indian Councils Act of 1892
B. Morley-Minto Reforms
C. Montague-Chelmsoford Reforms
D. Nehru Report of 1928

Solution: The Nehru Report of 1928 said that India would be a federation with a bi-cameral legislature at the centre, and Ministry would be responsible to the legislature. Later the demand for federation was doted by the different political outfits.

QUESTION: 75

The increased incidence of floods in recent times in North India is due to-

A. increase in the annual rainfall.
B. increase in the silting of dams.
C. increased deforestation in the catchment area.
D. None of the above.

Solution: The frequency and severity of flooding in the Gangetic plain have steadily increased in recent years. Deforestation of the Terai appears to be one of the major causes.

QUESTION: 76

Among the following works of Salman Rushdie, which one was his first creation?

A. Shame
B. Midnight's Children
C. The Satanic Verses
D. The Moor's Last Laugh

Solution: The correct chronological order of the works of Salman Rushdie is: Midnight’s Children (1981), Shame (1983), The Satanic Verses (1988), and The Moor’s Last Sigh (1995).

QUESTION: 77

In the’ annular' pattern, rivers flow-

A. from West to East
B. from North of South
C. like a ring
D. in transverse direction

Solution: Annular pattern refers to a ring-shaped drainage system. Over circular underground rock structures such as batholiths, the drainage network may develop into a series of concentric rings.

QUESTION: 78

Light scattering takes place in-

A. Colloidal solutions
B. Acidic solutions
C. Electrolyte solutions
D. Basic solutions

Solution: Scattering of light takes place in the case of colloidal solutions.

QUESTION: 79

Which one of the following organisations is not having its headquarter in Geneva?

A. World Trade Organisation
B. World Health Organisation
C. International Labour Organisation
D. International Civil Aviation Organisation

Solution: The International Civil Aviation Organisation headquarters is located in the Quartier International of Montreal, Quebec, Canada. WTO, WHO, and ILO are headquartered in Geneva, Switzerland.

QUESTION: 80

In which calendar month of every year, each of the first four dates (i.e., from and ) is observed as a World/International Day for a specific purpose?

A. June
B. July
C. September
D. October

Solution: The month, in reference here, is October. October 1: World Vegetarian Day, International Day of the Elderly; October 2: International Day of Non-Violence; October 3: World Habitat Day; and October 4: World Animal Welfare Day.

QUESTION: 81

If a good has negative income elasticity and the positive price elasticity of demand, it is a-

A. Giffen good
B. normal good
C. superior-good
D. an inferior good

Solution: A negative income elasticity of demand is associated with inferior goods. The Giffen good is an unusual type of inferior good which has a positive price elasticity of demand. It is a good which people paradoxically consume more of as the price rises, violating the law of demand. When the price goes up, the quantity demanded also goes up.

QUESTION: 82

Which among the following is not true about Pressure Groups?

A. Pressure Groups aim at capturing the government.
B. Pressure Groups aim at influencing the policies of the government.
C. Pressure Groups articulates the interest of its group
D. Pressure Group is characterised by the homogeneity of interests.

Solution: Interest group or pressure group is an association of individuals or organisations, usually organised, on the basis of one or more shared concerns. It attempts to influence public policy in its favour. Unseating the government is not their goal.

QUESTION: 83

The Peshwaship was abolished by the British at the time of Peshwa-

A. Raghunath Rao
B. Narayan Rao
C. Madhav Rao II
D. Baji Rao II

Solution: Baji Rao II (1796-1818) was the last Peshwa of the Maratha Confederacy. During his time, the British abolished the Peshwaship, and he was given a hefty pension.

QUESTION: 84

Major South-West Asian oil fields are located in-

A. Shore regions of Persian Gulf
B. Euphratis-Tigris Basin
C. the Arabian Desert
D. Rub-al-Khali Desert

Solution: The Persian Gulf and its coastal areas are the world’s largest single source of crude oil. The oil-rich countries (excluding Iraq) with a coastline on the Persian Gulf are referred to as the Persian Gulf States.

QUESTION: 85

Conglobate gland is a leaf-like structure found in-

A. Female Cockroach
B. Male Cockroach
C. Male Ascaris
D. Female Ascaris

Solution: Conglobate gland is a leaf-like, median, unbranched gland of male cockroach. It lies below the ejaculatory duct and opens into the genital pouch close to the male genital aperture.

QUESTION: 86

In Astrophysics, what name is given to a hypothetical hole in outer space from which stars and energy emerge?

A. Blackhole
B. Ozone hole
C. Asteroid belt
D. White hole

Solution: A White Hole is a hypothetical hole in outer space from which energy, stars, and other celestial matter emerge or explode. It is a theoretical celestial object into which matter is funnelled from a black hole.

QUESTION: 87

Identify the LIFO (Last in First Out) structure among the following:

A. Stack
B. Queue
C. De-queue
D. Array

Solution: In computer science, LIFO refers to the way items stored in some types of data structures are processed. A LIFO structure can be illustrated with the example of a stack of trays. The term in computing generally refers to the abstract principles of list processing and temporary storage, particularly when there is a need to access the data in limited amounts and a certain order.

QUESTION: 88

The effect or response produced by two or more chemicals are less than the sum of the effects or response that the chemical would produce individually is known as-

A. Antagonism
B. Independent
C. Additive
D. Synergism

Solution: Synergy is the interaction of multiple elements in a system to produce an effect different from or greater than the sum of their individual effects. On the other hand, antagonism is the combined action of two or more substances to produce an effect less than the sum of their individual effects.

QUESTION: 89

Identify the one which is not related to the Agricultural Price Policy.

A. Buffer stock
B. Imports
C. Support price
D. Licensing

Solution: Licensing is a marketing and brand extension tool widely used by everyone from major corporations to the smallest of small businesses. Authorities may issue a license to allow an activity that would otherwise be forbidden.

QUESTION: 90

Which one of the following parts of the human brain is the regulating centre for swallowing and vomiting?

A. Cerebellum
B. Cerebrum
C. Medulla Oblongata
D. Pons

Solution: The bottom part of the brain stem is called the Medulla oblongata. The medulla oblongata has nerve centres to control many vital body processes like swallowing, vomiting, breathing, heartbeat, etc.

QUESTION: 91

The science of Dactylography is commonly known as-

A. Carbon dating
B. Water printing
C. Fingerprinting
D. Electrocardiogram

Solution: A fingerprint in its narrow sense is an impression left by the friction ridges of a human finger. The flexibility of friction ridge skin means that no two finger or palm prints are ever exactly alike in every detail, even two impressions recorded.

QUESTION: 92

Who was the Captian of the Indian Hockey Team, which won the first Olympic Gold Medal in Amsterdam in 1928?

A. Dhyanchand
B. Jaipal Singh
C. Laeobkhan
D. Kishan Lal

Solution: Jaipal Singh Munda was a tribal man who captained the Indian field hockey team to clinch gold in the 1928 Summer Olympics in Amsterdam. However, Broome Pinniger captained the side in the final.

QUESTION: 93

Ports of the Baltic Sea remain open for trade even during winter because:

A. It lies in the tropical belt.
B. North Atlantic Drift, a warm ocean current flows in the region.
C. Local winds keep it warm.
D. Western disturbances cause an abrupt rise in the temperature.

Solution: This is due to the North Atlantic Drift, a warm water ocean current, an extension of the Gulf Stream. This current keeps the ports along the coasts warm enough to stay open year-round.

QUESTION: 94

Which among the following is used as a catalyst in the production of high octane fuel?

A. HNO₃
B. H₂SO₄
C. HCl
D. HF

Solution: Sulphuric acid is used as a catalyst for refining and producing alkylate, an essential component of high octane fuel. The hydrocarbon molecules are reformed into more complex molecules with a higher octane rating value.

QUESTION: 95

The Concept of "Directive Principles of State Policy" incorporated in the Constitution of India was borrowed from the Constitution of-

A. Australia
B. U.S.A.
C. Canada
D. Ireland

Solution: Directive Principles of State Policies are not enforceable in a court of law. India borrowed the DPSP from the Irish Constitution of 1937, which itself had borrowed it from the Spanish Constitution. Further, the Government of India Act had some “instruments of Instructions,” which became the primary source of DPSP.

QUESTION: 96

The structure which helps in the nutrition of the Embryo is-

A. Yolk sac
B. Amniotic membrane
C. Crypts
D. Placenta

Solution: The yolk sac is a membranous sac attached to an embryo, providing early nourishment. It functions as the developmental circulatory system of the human embryo before internal circulation begins. It carries out the transfer of nutrients in weeks 2 and 3 when the uteroplacental circulation is established.

QUESTION: 97

Threshold limit value of copper in the atmospheric air is-

A. 0.001
B. 0.01
C. 1.0
D. 5.0

Solution: The threshold limit value (TLV) of copper in atmospheric air is 1.0 mg/m3.

QUESTION: 98

Who was the first recipient of the Jnanpith Award?

A. Dr K. V. Puttappa
B. G. Sankara Kurup
C. Thankazhi Sivasankara Pillai
D. M.T. Vasudevan Nair

Solution: Sankara Kurup (1901– 1978), a Malayalam poet, won the first Jnanpith Award in 1965, the year of its inception, for his anthology of poems, titled Odakkuzhal.

QUESTION: 99

Who coined the name 'Pakistan?

A. Mohammed Ali Jinnah
B. Fazlul Haq
C. Liaquat Ali Khan
D. Choudhry Rehmat Ali

Solution: Chaudhry Rehmat Ali coined the name Pakistan. During the years 1930 through 1933, Chaudhry Rahmat Ali seemed to have established the Pakistan National Movement, with its headquarter at Cambridge.

QUESTION: 100

Which one of the following animals is devoid of lateral line sense organ?

A. Labeo
B. Catla
C. Sea horse
D. Magur

Solution: The lateral line is a system of sense organs found in aquatic vertebrates, chiefly fish, used to detect movement and vibration in the surrounding water. Sea Horses do not have such an organ.

QUESTION: 101

If a 110 V, 50 Hz is applied across a PMMC voltmeter of full-scale range 0-220 V and internal resistance of 10k Ω, reading of the voltmeter will be-

A. 0 V
B. 110 √2V
C. 78 V
D. 55 V

Solution: For sinusoidal voltage, PMMC reads zero.

QUESTION: 102

The small pockets of air in the high voltage cable provide_____relative permittivity____electric field, and at these sites, the breakdown is likely to be initiated.

A. high, high
B. low, low
C. low, high
D. high, low

Solution: The small pockets of air in high voltage cable provide Low relative permittivity high electric field, and at these sites, the breakdown is likely to be initiated.

QUESTION: 103

If the angular frequency of an alternating voltage is ω, then the angular frequency of instantaneous real power absorbed in an ac circuit is-

A. 2ω
B. ω
C. 3ω
D. ω/2

Solution: The angular frequency of an alternating voltage ω, then the angular frequency of instantaneous real power absorbed in an ac circuit is 2ω.

QUESTION: 104

The instantaneous power of a 1-phase series circuit supplying R-L load from a sinusoidal voltage source has in each cycle.

A. negative twice, zero four times
B. zero twice, negative once
C. negative four times, zero twice
D. negative twice, zero once

Solution: The instantaneous power of a 1-phase-series circuit supplying R-L load from a sinusoidal voltage source has in each cycle negative twice and zero four times.

QUESTION: 105

Three equal impedances are first connected in delta across a 3-phase balanced supply. If the same impedances are connected in star across the same supply-

A. phase currents will be of the previous value
B. line currents will be of the previous value
C. power consumed will be of the previous value
D. power consumed will be 3 times the previous value

Solution: Three equal impedance are first connected in delta across a 3-phase balanced supply. The same impedance is connected in a star across the same supply, then the power consumed will be 1/3 of the previous value.

QUESTION: 106

In electronic circuits, for blocking the DC component of a voltage signal, a/an______is connected in series with the voltage source.

A. capacitor
B. diode
C. resistor
D. inductor

Solution: For blocking the DC component of a voltage signal, a capacitor is connected in series with the voltage source.

QUESTION: 107

The average value of current I_av of a sinusoidal wave of peak value I_m is-

A.
B.
C.
D.

Solution:

QUESTION: 108

To minimise the errors due to lead and contact resistances, low resistances used in electrical measurement work are provided with-

A. guard rings
B. four terminals
C. thick insulation
D. metal shields

Solution: To minimise the errors due to lead and contact resistance, low resistances used in electrical measurement work are provided with guard rings.

QUESTION: 109

A attenuator probe, as shown, is connected to an amplifier of input capacitance 0.1μ F. Value of C that must be connected across 100 k to make the overall gain independent of frequency is-

A. 0.01μ F
B.
C. 1μ F
D. 10μ F

Solution: For prob independent of frequency

Time constant of amplifier and prob are equal

R₁C₁= R₂C₂

100 x C = 10 x .1 x 10^–6

1 C = .01 µc

QUESTION: 110

In the circuit, V is the input voltage applied across the capacitor of 2F. Current through the capacitor is

A. A
B. B
C. C
D. D

Solution:

QUESTION: 111

A current from an AC source divides into two branches, A and B, in parallel. Branch A is an inductor 30μ H inductance and 1Ω resistance. Branche B is another inductor with inductance L and 1.5Ω resistance. For the ratio of currents in the branches to be independent of supply frequency, the value of L should be-

A. 30.5μ H
B. 20μ H
C. 45μ H
D. 29.5μ H

Solution:

For independent of supply frequency

ω L - ω45μ = 0

L = 45μ H

QUESTION: 112

Two lossy capacitors with equal capacitance values and power factors of 0.01 and 0.02 are in parallel, and the combination is supplied from a sinusoidal voltage source. The power factor of the combination is-

A. 0.03
B. 0.015
C. 0.01
D. 0.0002

Solution:

QUESTION: 113

Function of interpoles in a DC machine is to-

A. reduce field winding heating
B. improve commutation
C. compensate for air gap variation
D. reduce losses

Solution: The function of interpoles in a DC Machine is to improve commutation.

QUESTION: 114

In indicating instruments, the springs are mainly used to-

A. conduct the current to the coils
B. hold the pivot in position
C. control the pointer movement
D. reduce the vibration of the pointer

Solution: In indicating instruments, the springs are mainly used to control the pointer movement.

QUESTION: 115

To maximise the driving torque in an induction type instrument, the flux produced by shunt coil and series coil should be-

A. In phase with each
B. In quadrature with each other
C. Displaced by with respect to each other
D. Out of phase with respect to each other

Solution: To maximise the driving torque in an induction type instrument, the flux produced by the shunt coil and series coil should be in quadrature with each other.

QUESTION: 116

The input resistance of a FET is of the order of-

A. 100Ω
B. 10Ω
C. 1Ω
D. 100MΩ

Solution: The input resistance of a FET is of the order of 100MΩ.

QUESTION: 117

Three 3μ F capacitors are in series. A 6 capacitor is in parallel with this series arrangement. The equivalent capacitance of this combination is-

A. 7μ F
B. 15μ F
C. 3.6μ F
D. 1μ F

Solution:

C_ab = (1e)μ F = 7μ F

QUESTION: 118

In a series R-L-C circuit, the "Q-factor" is given by-

A.
B.
C.
D.

Solution: In a series R-L-C circuit

QUESTION: 119

The mutual inductance between two coils having self inductances 3 henry and 12 henry and coupling coefficient 0.85 is-

A. 12.75 henry
B. 5.1 henry
C. 0.425 henry
D. 1.7 henry

Solution:

M = 5.1H

QUESTION: 120

A geyser is operated from 230 V, 50 c/s mains. The frequency of instantaneous power consumed by the geyser is-

A. 25 c/s
B. 50 c/s
C. 100 c/s
D. 150 c/s

Solution: Frequency of instantaneous power = 2f = 2 x 50 = 100c/s

QUESTION: 121

The given circuit represents a-

A. Monostable multivibrator
B. Astable multivibrator
C. Schmitt trigger
D. Bistable multivibrator

Solution: The given circuit represents the Schmitt trigger.

QUESTION: 122

The average value of the voltage wave v = 110175sin(314t - 25⁰) volts is-

A. 110 V
B. 175 V
C. 165.57 V
D. 206.7 V

Solution: V = 110175sin(314t - 250)

V_axg = 1100 = 110 V

QUESTION: 123

The voltage wave v = V_msin(ω t - 15⁰) volts is applied across in AC circuit. If the current leads the voltage by 10⁰ and the maximum value of currents is I_m, then the equation of current is-

A. i = I_msin(ω t5⁰)amps
B. i = I_msin(ω t - 25⁰)amps
C. i = I_msin(ω t25⁰)amps
D. i = I_msin(ω t - 5⁰)amps

Solution: V = V_msin(ω t - 15⁰)volts

If currents leads 10⁰

I = I_msin(ω t - 1510⁰)

= I_msin(ω t - 5⁰)

QUESTION: 124

Resistance switching is commonly employed in-

A. bulk oil breakers
B. minimum oil breakers
C. air blast circuit breakers
D. all of (A), (B), and (C)

Solution: Resistance switching is usually employed in air blast circuit breakers.

QUESTION: 125

In reference to the figure, the voltage waveform v (t) is measured by a PMMC, a PMMC combined with a bridge rectifier and a moving iron (MI) instrument. Two lists are prepared thereafter.

List-I (Instrument List) List-II (List of instrument reading)

a. PMMC i. 5V

b. PMMC rectifier ii. 2.75

c. M.I iii. 2.5 V

The correct option relation the instruments and their reading is-

A. a-i, b-ii, c-iii
B. a-iii, b-ii, c-i
C. a-ii, b-iii, c-i
D. a-iii, b-i, c-ii

Solution:

PMMC reads Average values = 10/4 = 2.5V

PMMC rectifier = 2.75V

M.I. reads = 10/2 = 5

QUESTION: 126

In the case of frosted GLS lamps, frosting is done by-

A. Acid etching
B. Ammonia
C. Ozone
D. Saltwater

Solution: In the case of frosted GLS lamps, frosting is done by ammonia.

QUESTION: 127

Two parallel conductors carrying current in opposite directions will exert on each other-

A. an attractive forces
B. a repulsive force
C. an axial force
D. no force

Solution: Two parallel conductors carrying currents in opposite directions will exert a repulsive force on each other.

QUESTION: 128

The total flux at the end of a long permanent bar magnet is 100 x 10^-6. The end of this magnet is withdrawn through a 1000 turn coil in 1/20 seconds. The induced e.m.f. in the coil is-

A. 20.0 V
B. 2.0 V
C. 0.2 V
D. 0.02 V

Solution: Induced Emf = ΦN/t

QUESTION: 129

A wattmeter is marked 15A/30A, 300V/600V, and its scale is marked up to 4500 watts. When the meter is connected for 30A, 600A, the point indicated 2000 watts. The actual power in the circuit is-

A. 2000 Watts
B. 4000 Watts
C. 6000 Watts
D. 8000 Watts

Solution: Here multiplier factor m.f. = 4

Actual power = mf x meter reading

= 4 x 2000 = 8000 W

QUESTION: 130

In a balanced 3-phase circuit, the line current is 12A. When the power is measured by two wattmeter method, one meter reads 11kW while the other reads zero. The power factor of the load is-

A. 0
B. 0.5
C. 0.866
D. 1.0

Solution: I_L = 12A

W_L = 11KW

W₂= 0

Φ = 60⁰

Power factor = cos60⁰ = ½ = 0.5

QUESTION: 131

The purpose of providing a choke in the tube light is-

A. to eliminate the corona effects
B. to avoid radio interference
C. to improve power factor
D. to limit current to the appropriate factor

Solution: The purpose of providing a choke in the tube light is to limit current to the appropriate factor.

QUESTION: 132

An inductor is supplied from a sinusoidal voltage source. The magnetic field energy in the inductor changes from peak value to a minimum value of 10 msec. The supply frequency is-

A. 50 Hz
B. 25 Hz
C. 1kHz
D. 100 Hz

Solution: The frequency of magnetic field energy is twice the supply frequency.

.^.. T/2 = 2 x [10m]

⇒ T = 40 X 10^-3

f = 25Hz

QUESTION: 133

An electric heater draws 1000 watts from a 250V source. The power drawn from a 200V source is-

A. 800 W
B. 640 W
C. 1000 W
D. 1562.5 W

Solution:

P = 1000/25 x 16 = 640W

QUESTION: 134

In a 1-phase series RL circuit fed by a voltage source, the resistance and reactance values are 4 ohms each.

A. the current leads the voltage by 45⁰
B. the current lags the voltage by 45⁰
C. the current lags the voltage by 60⁰
D. None of the above

Solution: In a 1-phase series RL circuit is fed by a voltage source. The resistance and reactance values are 4 ohm

Z = 4j4

tanθ = 1

θ = 45⁰

Current lags the voltage by 45⁰

QUESTION: 135

Which one of the following is a speed control method of their phase squirrel cage induction motor?

A. Plugging method
B. Star-delta switch method
C. Pole changing method
D. Centrifugal clutch method

Solution: The pole-changing method is a speed control method of a three-phase squirrel cage induction motor.

QUESTION: 136

Which one of the following is a valid value of the coefficient of coupling between two inductors?

A. 1.414
B. 0.9
C. 1.732
D. 17.32

Solution: Coefficient of Coupling K

So, valid K = 0.9

QUESTION: 137

Value of the load impedance which for load consumes maximum power is-

A. (50Ω) at a power factor of 0.6 lead
B. (30Ω) at a power factor of unity
C. (50Ω) at a power factor of 0.6 lag
D. None of the above

Solution:

For maximum power transfer (Z_L = Z^*_S= 30 - j40)

|Z_L| = 50

Z_L = 50 at power factor of 0.6 leading.

QUESTION: 138

Alternators are usually designated to generate which type of AC voltage?

A. with fixed frequency
B. with variable frequency
C. fixed current
D. fixed power factor

Solution: Alternators are usually designed to generate with a fixed frequency.

QUESTION: 139

Capacitor preferred when there is high frequency in the circuits is __________.

A.
Electrolyte capacitor
B.
Mica capacitor
C.
Air capacitor
D.
Glass capacitor

Solution:

Mica capacitors are preferred for high-frequency circuits because they have low ohmic losses and less reactance.
Hence, the correct option is (B)

QUESTION: 140

How many watt-second are supplied by a motor developing 2 hp (British) for 5 hours-

A. 2.6856 x 10⁷ watt-seconds
B. 4.476 x 10⁵ watt-seconds
C. 2.646 x 10⁷ watt-seconds
D. 6.3943 x 10⁶watt-seconds

Solution: 1hp = 765 watt

In watt - seconds

= 765 x 2 x 5 x 3600

= 2.6856 x 10⁷

QUESTION: 141

Silicon content in iron lamination is kept within 5% as it-

A. makes the material brittle
B. reduces the curie point
C. increased hysteresis loss
D. increased cost

Solution: Silicon content in Iron lamination is kept within 5% as it makes the material brittle.

QUESTION: 142

If the insulation resistance of 2m long sample of a cable is 10MΩ, then an 8m long sample of the same will have an insulation resistance of-

A. 40MΩ
B. 2.5MΩ
C. 2MΩ
D. 5.5MΩ

Solution: For insulation Resistance = (Rα1/1)

R = 10 X 2/8 = 2.5MΩ

QUESTION: 143

One B.O.T. unit is-

A. 1000 kWh
B. 10 kWh
C. 1 kWh
D. 0.1 kWh

Solution: 1B.O.T_unit = 1K Whr

B.O.T_unit = Board of trade unit

QUESTION: 144

A 3-phase synchronous motor is started by utilising the torque developing in-

A. the high-speed steam temperature
B. the damper winding on the rotor
C. the damper winding on the stator
D. the low-speed water turbine

Solution: the 3-phase synchronous motor is started by utilising the torque developed in the damper winding on the rotor.

QUESTION: 145

A universal motor is one which-

A. can run on any value of supply voltage
B. has infinity varying speed
C. can operate on ac as well as dc voltage
D. can work as single-phase or three-phase

Solution: Universal motor can operate on ac as well as dc voltage.

QUESTION: 146

The emf induced in a coil is given by where e is the emf induced, N is the number of turns, and d Φ is the instantaneous flux linkage with the coil in time dt-

A. Hans Christian Oersted
B. Andre-Marie Ampere
C. Michael Faraday
D. Emil Lenz

Solution:

It is emil Len's law.

QUESTION: 147

Phasor diagram of load voltage (V), current in pressure coil ((I_P)), and current in the current coil ((I_C)) is shown in the figure when an electrodynamic wattmeter is used to measure power. The reading of the wattmeter will be proportional to-.

A. (cos(βψ))
B. (cosψ)
C. (cosβ cosψ)
D. (cosβ cos(βψ)

Solution: P = V cosβ.I_Ccosψ

P = V I_C cosβ cosψ

Pα cosβ cosψ

QUESTION: 148

For welding purpose, the secondary transformer used should be capable of carrying-

A. high voltage, high current
B. high voltage, low current
C. low voltage, high current
D. low voltage, low current

Solution: For welding, the secondary transformer should be capable of carrying low voltage and high current.

QUESTION: 149

The peak value of the output voltage of a half-wave rectifier is 100V. The r.m.s value of the half-wave rectifier output voltage will be-

A. 100 V
B. 50 V
C. 70.7 V
D. 35.35 V

Solution:

QUESTION: 150

The voltage across R, L, and C are 3V, 14 V, 10 V, respectively, as in the figure. If the voltage source is sinusoidal, then the input voltage (RMS) is-

A. 10 V
B. 5 V
C. 2.5 V
D. 15 V

Solution:

=

QUESTION: 151

Application of Norton's theorem in a circuit results in-

A. A current source and an impedance in parallel
B. A voltage source and an impedance in series
C. An ideal voltage source
D. An ideal current source

Solution:

QUESTION: 152

Match List I (Machin with List-II (Graph) and select the appropriate response-

List I List II

A. DC Motor 1. Circle diagram

B. DC Generator 2. V-Curve

C. Alternator 3. Open circuit characteristics

D. Induction motor 4. Speed-Torque characteristics

A. A-4, B-3, C-1, D-2
B. A- 3, B-4, C-2,D-1
C. A-4, B-3, C-2, D-1
D. A-3,B-4,C-2,D-1

Solution: DC motor (→) Speed – torque characteristic

DC generator (→) Open circuit characteristic

Alternator (→) V-cure

Induction Motor (→) Circle diagram

QUESTION: 153

The magnetic field energy in the inductor changes from the maximum value to the minimum value in 5 msec when connected to an AC source. The frequency of the source in Hz is-

A. 500
B. 200
C. 50
D. 20

Solution: T/2 = 2 X [5 X 10^-3]

T = 2 X 10^-2sec

f = 1/2 x 10 = 50Hz

QUESTION: 154

Tesla is the unit of-

A. electric flux density
B. magnetic field intensity
C. electric field intensity
D. magnetic field density

Solution: The unit of magnetic flux density is Tesla.

QUESTION: 155

The single phase Induction Motor (IM), which does not have a centrifugal switch, is-

A. capacitor start single phase M
B. resistance split single phase IM
C. capacitor start capacitor run single phase M
D. Permanent capacitor run single phase IM

Solution: The single-phase induction motor (IM), which does not have a centrifugal switch, is a permanent capacitor-run single-phase IM.

QUESTION: 156

The unit of the reluctance of magnetic circuit is-

A. AT/m
B. Weber/mWeber/m
C. AT/weber
D. Weber/AT

Solution: Unit of the reluctance of Magnetic circuit = AT/weber

QUESTION: 157

A balanced 3-phase, 3-wire supply feeds balanced start connected resistors. If one of the resistors is disconnected, the percentage reduction in load will be-

A. 33.33
B. 50
C. 66.67
D. 75

Solution: Power in one resistor removed star removed from star connected load.

QUESTION: 158

A ammeter of resistance (R_m) has placed an arrangement as shown in the figure. Material of (R_m), (R_sh), is copper, whereas that of (R_S, R_x) is manganin. The condition for which the meter performance is compensated against temperature is-

A.
B. (R_mR_s = R_sh.R_x)
C. (R_mR_s = R_shR_x)
D.

Solution:

QUESTION: 159

Examine the two statements 'A' and 'R' and select your answer

Statement A: Switching off a lamp in the house produces noise in a radio.

Statement R: Switching operation produces across separating contacts-

A. Both A and R are true, and R is a correct explanation of A
B. Both A and R are true, and R is not the correct explanation of A
C. A is true, but R is false
D. A is false, but R is true

Solution: Switching off a lamp in a house produces noise in radio because switching operations produced are across separating contacts.

QUESTION: 160

Compared to the beaking capacity of a circuit breaker, its making capacity should be-

A. more
B. less
C. equal
D. the two are unrelated to each other

Solution: Compared to the breaking capacity of a circuit breaker, its making capacity should be more.

QUESTION: 161

For the given V-I characteristic find out the value of dynamic resistance R_ac?

A.
2 Ω
B.
4 Ω
C.
5 Ω
D.
10 Ω

Solution:

Since the dynamic resistance is the reciprocal of line as-

QUESTION: 162

In a motor starter, the electromechanical contactor provide inherent protection against-

A. over-circuit
B. short-circuit
C. single-circuit
D. under-circuit

Solution: In a motor starter, the electromechanical contractor provides inherent protection against under-voltage.

QUESTION: 163

In a semiconductor, the resistivity-

A. depends on temperature
B. depends on voltage
C. depends on the current through it
D. None of the above

Solution: In a semiconductor, the resistivity depends on temperature.

QUESTION: 164

A voltmeter, when connected across a DC supply, reads 124 V. When a series combination of the voltmeter and an unknown resistance X is connected across the supply, the meter reads 4V. If the resistance of the voltmeter is. the value of X is-

A. 1550kΩ
B. 1600kΩ
C. 1.6kΩ
D. 1.5MΩ

Solution:

⇒ X = 1500kΩ = 1.5MΩ

QUESTION: 165

A tank circuit consists of-

A. an inductor and a capacitor connected in series
B. an inductor and a capacitor connected in parallel
C. a pure inductance and a pure capacitance connected in series
D. a pure inductance and a pure capacitance connected in parallel

Solution: Tank circuit

QUESTION: 166

A 300 kW alternator is driven by a prime mover of speed regulation of 4%, while the prime mover of another 200kW alternator has a peed regulation of 3%. When operating in parallel; the total load they can take without any of them being overloaded is-

A. 500kW
B. 567 kW
C. 425 kW
D. 257 kW

Solution: Let load shared by two machineries are x kw and y kw

(4/300)x = (3y/200)

8x = 9y

x = 225kw ……(∴ y = 200 kw given)

∴ total load = 225 + 200 = 425kw

QUESTION: 167

The purpose of using dummy coil in DC machine is to-

A. eliminate harmonics developed in the machine
B. eliminate harmonics reaction
C. bring a mechanical balance of the armature
D. bring a mechanical balance of the body of the motor

Solution: The purpose of using dummy coil in DC Machines is to bring Mechanical balance of the armature.

QUESTION: 168

The commutator segments of DC machines are made of-

A. tungsten
B. hard drawn copper
C. soft copper
D. electrolytic copper

Solution: The Commutator segments of the DC Machine are made of hard-drawn copper.

QUESTION: 169

Resistance temprature coefficient of copper at 20⁰C at-

A. 0.0045/⁰C
B. 0.0017/⁰C
C. 0.00393/⁰C
D. 0.0038/⁰C

Solution: The resistance temperature coefficient of copper at 20⁰C is 0.00393/⁰C.

QUESTION: 170

The capacitance measured between any two cores of a 3-core cable with the sheathed earthed is 3μ F. The capacitance per phase will be

A. 15μ F
B. 6μ F
C. 1μ F
D. None of these

Solution: C_N = 2C_AB = 2 X 3μ F = 6μ F

QUESTION: 171

In a 3-phase 400V, 4-wire system, two incandescent lamps, one having 230 V, 100 W specification and the other 230 V, 200 W, are connected between R phase-neutral and Y phase-neutral, respectively. If the neutral wire breaks-

A. 100 W lamp will fuse first
B. 200 W lamp will fuse first
C. both the lamps will fuse together
D. both the lamps will glow

Solution: If the neutral wire breaks, 100 W lamp will fuse first

QUESTION: 172

Ampere -second is the unit of-

A. emf
B. power
C. electric charge
D. energy

Solution: Unit electric - charge = Ampere-Second.

QUESTION: 173

Two 2000Ω, 2-watt resistors are connected in parallel. Their combined resistance value and wattage rating are-

A. 1000Ω,2watt
B. 1000Ω,4watt
C. 2000Ω,4watt
D. 2000Ω,2watt

Solution:

(Req = R₁|R₂)

= 2000 X 2000/2000 + 2000

Req = 1000Ω

P = P₁ + P₂ = 2 + 2 = 4W

QUESTION: 174

Two 1-phase AC motors A and B, operate from a 1000V supply. A consumes 2kW at a power factor of 0.8 (lagging), and B consumes 1 kW at a power factor of 0.5 (lagging). The total current drawn from the supply is approximate-

A. 4.5 A
B. 2.1 A
C. 4.41 A
D. 9 A

Solution:

I = I₁I₂ = 2.52

I = 4.5A

QUESTION: 175

For a 6-pole DC machine with wave wound armature, the number of brushes required are-

A. 2
B. 4
C. 6
D. 12

Solution: The number of brushes for 6 pole DC Machine with wave wound is 2.

QUESTION: 176

A 4-pole generator is running at 1200 rpm—the frequency and time period of the emf generated in its coils, respectively.

A. 50 Hz, 0.02 sec
B. 40 Hz, 0.025 sec
C. 300 Hz, 0.00333 sec
D. 2400 Hz, (1/2400sec)

Solution: N = 120f/P

1200 = 120 x f/4

f = 1200 x 4/120

T = I/f = 1/40

QUESTION: 177

Which of the following is correct?

A. Load factor = capacitor x utilisation factor
B. Utilisation factor = load factor x utilisation factor
C. Capacitor factor = load factor x utilisation factor
D. Load factor has no relation with capacity factor and utilisation factor

Solution: Capacitor factor = load factor x utilisation factor.

QUESTION: 178

If the frequency in the input voltage of a transformer is increased, keeping the magnitude of the voltage unchanged, then-

A. both hysteresis loss and eddy current loss in the core will increase.
B. hysteresis loss will increase but eddy current loss will decrease
C. hysteresis loss will increase but eddy current loss will remain unchanged.
D. hysteresis loss will decrease but eddy current loss will increase

Solution: If the frequency of input voltage of a transformer is increased, keeping the magnitude of the voltage unchanged, then hysteresis loss will increase but eddy current loss will remain unchanged.

QUESTION: 179

The voltage (v) vs current (i) curve of the circuit is shown below :

The internal resistance of the source e is-

A. 24Ω
B. 4Ω
C. 10Ω
D. 14Ω

Solution:

e = V - 10i

= 24 - 10 = 14Ω

QUESTION: 180

If the centrifugal switch of a single-phase resistance split induction motor does not open after starting of motor, the motor-

A. will run above normal speed
B. will run below normal speed
C. will draw a very small current
D. will draw high current and get overheated

Solution: If the centrifugal switch of a single-phase resistance split centrifugal switch of a single-phase resistance split induction motor does not open after starting of motor, the motor will draw high current and get over-heated.

QUESTION: 181

A voltage source having an open-circuit voltage of 150 V and internal resistance of is equivalent to a current source of-

A. 2A is series with 75Ω
B. 2A in parallel with 37.5Ω
C. 2A in parallel with 75Ω
D. 1A in parallel with 150Ω

Solution: V_OC = 150V

Req = 75Ω

I_SC = V_OC/Req = 2A

Req = 75Ω

QUESTION: 182

An inductor with a ferromagnetic core is supplied from a sinusoidal voltage source with frequency 'f.’ The current drawn by the inductor will be-

A. sinusoidal with frequency 'f.'
B. sinusoidal with frequency '2f.'
C. a sawtooth wave
D. non-sinusoidal with frequency 'f.'

Solution: An inductor with a ferromagnetic core is supplied from a sinusoidal voltage source with frequency f. The circuit drawn by the inductor will be nonsinusoidal with frequency f.

QUESTION: 183

Superposition theorem requires as many circuits to be solved as there are-

A. nodes
B. sources
C. loops
D. None of the above

Solution: For superposition theorem

Number of circuits = Number of sources

QUESTION: 184

When a multiplier is added to an existing voltmeter for extending its range, its electromagnetic damping-

A. remains unaffected
B. increases
C. decreases
D. changes by an amount depending on the controlling torque

Solution: When a multiplier is added to an existing voltmeter for extending its range, its electromagnetic damping decreases.

QUESTION: 185

In an insulated cable having core diameter d and overall diameter D, the ratio of maximum to minimum dielectric stress is given by-

A. ((D/d)12)
B. ((D/d)²)
C. D/d
D. d/D

Solution: Dielectric stress α = 1/Diameter

Maximum dielectric stress/Minimum dielectric stress = D/d

QUESTION: 186

If the supply polarity to the armature terminals of a separately excited DC motor is reversed, the motor will run under-

A. Plugging condition
B. Regenerative braking condition
C. Dynamic braking condition
D. Normal motoring condition

Solution: If the supply polarity to be armature terminals of a separately excited dc motor is reversed, the motor will run under plugging conditions.

QUESTION: 187

We have three resistances, each of value 1Ω, 2Ω, and 3Ω. If all the three resistances are connected in a circuit, how many different values of equivalent resistance are possible?

A. Five
B. Six
C. Seven
D. Eight

Solution:

QUESTION: 188

The commutator in the DC machine acts as-

A. a mechanical inverter
B. a mechanical rectifier
C. current controller
D. either (A) or (B)

Solution: The commutator is a DC Machine that acts as a mechanical inverter of a rectifier.

QUESTION: 189

In a series R-L circuit supplied from a sinusoidal voltage source, the voltage across R and L are 3 V and 4 V, respectively. The supply voltage is then-

A. 7 V
B. 1 V
C. 3.5 V
D. 5 V

Solution:

V_R = 3V

V_L = 4V

V_s = 5V

QUESTION: 190

The high voltage and low voltage winding resistances of a distribution transformer of 1000 KVA, 1100/220 equivalent resistances referred to high voltage side and low voltage side are respectively-

A. 2.504Ω and 0.2Ω
B. 0.2Ω and 0.008Ω
C. 0.10016Ω and 2.504Ω
D. 0.008Ω and 0.10016Ω

Solution: Resistance referred to the high voltage side.

R₀₂ = R₁K²R₂

= 0.1(5)²0.004

= 0.10.1 = 0.2Ω

Resistance refered to low voltage side,

QUESTION: 191

In an ac circuit, V and I = (30-j10)A. The active and reactive power of the circuit are, respectively.

A. 6400 W, 800 VAR capacitive
B. 6400 W, 800 VAR inductive
C. 5600 W, 3200 VAR capacitive
D. 5600 W, 3200 VAR inductive

Solution: V = (200 + j40)V

I = (30 -j10)A

S = VI*

= (200 + j40)×(30 + j10)

= (6000 – 400) + (j1200 + 2000)

= 5600 + j3200

P = 5600 W

Q = 3200 VAr

QUESTION: 192

The speed-torque characteristics of a DC series motor operating from a constant voltage supply is-

A. A
B. B
C. C
D. D

Solution: Speed torque characteristic

QUESTION: 193

Three inductors each of 60 mH are connected in delta. The value of inductance of each arm of the equivalent star connection is-

A. 10 mH
B. 15 mH
C. 20 mH
D. 30 mH

Solution:

L_ab = L/3 = 60/3 x 10^-3 = 20mH

QUESTION: 194

The load characteristic of DC shunt generator is determined by-

A. the voltage drop in armature resistance
B. the voltage drop due to armature reaction, the voltage drop due to decreased field current, and voltage drop in armature resistance.
C. the voltage drop to armature reaction and voltage drop in armature resistance
D. the voltage drop due to armature reaction, the voltage drop due to decreased field current, and voltage drops in armature and field resistance

Solution: The load characteristic of the DC shunt generator is determined by the voltage drop due to armature reaction, the voltage drop due to decreased field current, and voltage drop in armature resistance.

QUESTION: 195

A DC series motor has an armature resistance of 0.06Ω and a series field resistance of 0.08Ω. The motor is connected to a 400V supply. Thus line current is 20A when the speed of the machines is 1100 rpm. When the line current is 50 A, and the excitation is increased by 30%, the speed of the machine in rpm is-

A. 1100
B. 1003
C. 837
D. 938

Solution: Here

V = 400 V , I₁ = 20 A, N₁ = 1100

R_a = 0.06 ohm, R_se = 0.08 ohm

I₂ = 50 A, N₂ =?

Φ₂ = 130 % of Φ₁ = 1.3 Φ₁

While drawing line current of 20 A

E_b1 = V – I₁(R_a + R_se)

= 400 – 20(0.06 + 0.08)

= 397. 2 V

While drawing line current of 50 A

E_b2 = V – I₂(R_a + R_se)

= 400 – 50(0.06 + 0.08)

= 393 V

We know that

200 Questions MCQ Test Mock Test Series for SSC JE Electrical Engineering | SSC JE (EE) Mock Test- 7

In a certain office, (1/3) of the workers are women, (1/2) of the women are married, and (1/3) of the married women have children. If (3/4) of the men are married and (2/3) of the married men have children, then what part of workers are without children?

From the given alternative words, select the word which can be formed using the letters of the given word:'DETERMINATION'

In the given options, which option is a mirror image of the question image?Question figure:Answer figures:

From the given alternative words, select the word which can be formed using the letters of the given word:
'DETERMINATION'

In the given options, which option is a mirror image of the question image?
Question figure:
Answer figures: