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Practice Test: Mechanical Engineering (ME)- 8 - Mechanical Engineering MCQ


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30 Questions MCQ Test - Practice Test: Mechanical Engineering (ME)- 8

Practice Test: Mechanical Engineering (ME)- 8 for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Practice Test: Mechanical Engineering (ME)- 8 questions and answers have been prepared according to the Mechanical Engineering exam syllabus.The Practice Test: Mechanical Engineering (ME)- 8 MCQs are made for Mechanical Engineering 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Practice Test: Mechanical Engineering (ME)- 8 below.
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Practice Test: Mechanical Engineering (ME)- 8 - Question 1

A lent Rs. 5000 to B for 2 years and Rs. 3000 to C for 4 years on simple interest at the same rate of interest and received Rs. 2200 in total from both as interest. The rate of interest per annum is.

Detailed Solution for Practice Test: Mechanical Engineering (ME)- 8 - Question 1

Let the rate % = R
According to the question,

100R + 120 R = 2200

Practice Test: Mechanical Engineering (ME)- 8 - Question 2

Amit rows a boat 9 kilometres in 2 hours down-stream and returns upstream in 6 hours. The speed of the boat (in kmph) is:

Detailed Solution for Practice Test: Mechanical Engineering (ME)- 8 - Question 2

Down-stream rate = 9/2 = 4.5 kmph
Upstream rate = 9/6 = 1.5 kmph
The speed of the boat = (4.5 – 1.5) kmph = 3 kmph

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Practice Test: Mechanical Engineering (ME)- 8 - Question 3

The sentences given with blanks are to be filled with an appropriate word(s). Four alternatives are suggested for each question. For each question, choose the correct alternative and click the button corresponding to it.They abandoned their comrades ______the wolves.

Detailed Solution for Practice Test: Mechanical Engineering (ME)- 8 - Question 3

When something is left in between more than 2 things or persons, ‘among’ is used. There are a number of wolves in the sentence hence the correct answer is option D.

Practice Test: Mechanical Engineering (ME)- 8 - Question 4

In the following question, out of the four alternatives, select the word opposite in meaning to the given word.Turgid

Detailed Solution for Practice Test: Mechanical Engineering (ME)- 8 - Question 4

Turgid = swollen and distended or congested; pompous
Bloated = inflated
Humble = plain, simple
Puffy = inflated
Tumescent = swollen
Hence, humble is the correct answer.

Practice Test: Mechanical Engineering (ME)- 8 - Question 5

Direction: Read the information carefully and give the answer of the following questions:
Total number of children  = 2000

If two-ninths of the children who play football are females, then the number of male football children is approximately what percent of the total number of children who play cricket?

Detailed Solution for Practice Test: Mechanical Engineering (ME)- 8 - Question 5

57.4% (If 2/9 th of children play football are female , then
male children = 1 - 2/9 = 7/9th of children play football;
Let's take z% of male football children equal to cricket children , then
=> z% of cricket children = 7/9 th of football;
=> z% of (23% of 2000) = 7/9 th of (17% of 2000);
=> z% of 23 = 7/9 th of 17
=> z = 7× 17 × 100 = 57.4%;)
Short-cut :
Required percentage = (7/9)*17*100/ 23 = 57.4%

Practice Test: Mechanical Engineering (ME)- 8 - Question 6

Direction: Study the following information carefully and answer the given questions:
The following pie chart shows the percentage distribution of total number of Apples (Dry + Wet) sold in different days of a week :

The pie chart2 shows the percentage distribution of total number of Apples (Wet) sold in different days of a week.

Find the ratio of Apples (Dry + Wet) sold on Tuesday to that of the Apples (Wet) sold on Thursday?

Detailed Solution for Practice Test: Mechanical Engineering (ME)- 8 - Question 6

Required ratio = 13% of 7000: 23% of 4500 = 182:207

Practice Test: Mechanical Engineering (ME)- 8 - Question 7

Directions: In each of the questions below, some statements are given followed by some conclusions. You have to consider the statements to be true even if they seem to be at variance with commonly known facts. You have to decide which of the following conclusions logically follows from the given statements. Give answer.
Statements:
Some jacket is shirt.
Some shirts are trouser.
No shoes are t-shirt.
All trousers are shoes.
All pants are t-shirt.
Conclusions:
I. All shirts being t-shirt is a possibility.
II. Some shoes are trouser.
III. Some jackets are t-shirt.
IV. Some shirts being t-shirt is a possibility.

Detailed Solution for Practice Test: Mechanical Engineering (ME)- 8 - Question 7

Practice Test: Mechanical Engineering (ME)- 8 - Question 8

The question below consists of a set of labelled sentences. These sentences, when properly sequenced form a coherent paragraph. Select the most logical order of sentences from among the options.
P: July 1969 was to see a transformed Indira Gandhi.
Q: Quite a few people contributed with ideas.
R: She sounded the bugle through her historic ‘Note on Economic Policy and Programme’ that was
circulated among delegates at Bangalore on July 9, 1969.
S: But the pivot was P.N.Haksar who gave shape, structure and substance with the help of some of his
colleagues in the Prime Minister’s Secretariat.

Detailed Solution for Practice Test: Mechanical Engineering (ME)- 8 - Question 8

P is clearly the first sentence as it introduces the main person of the paragraph, i.e. Indira Gandhi. The pronoun ‘she’ in R refers to Indira Gandhi mention in P. Thus, R forms the second statement. Now, in the sentence R, ‘delegates’ is mentioned which says about the people, who are given in the sentence Q. So, sentence Q must follow R. Thus, the sequence after rearrangement is PRQS and option A is the correct answer.

Practice Test: Mechanical Engineering (ME)- 8 - Question 9

Direction: Which of the following is the MOST SIMILAR in meaning to the given word?
Remnant

Detailed Solution for Practice Test: Mechanical Engineering (ME)- 8 - Question 9

‘Remnant’ means ‘remainder’ which is same as ‘residue’.

Practice Test: Mechanical Engineering (ME)- 8 - Question 10

Direction: Study the following information carefully and answer the given questions.

Seven people, P, Q, R, S, T, W and X sitting in a straight line facing north, not necessarily in the same order. R sits at one of the extreme ends of the line. T has as many people sitting on his right, as on his left. S sits third to the left of X. Q sits on the immediate left of W. Q does not sit at any of the extreme ends of the line.
If all the people are made to sit in alphabetical order from right to left, the positions of how many people will remain unchanged?

Detailed Solution for Practice Test: Mechanical Engineering (ME)- 8 - Question 10


Hence, only Q's position will remain unchanged.

*Answer can only contain numeric values
Practice Test: Mechanical Engineering (ME)- 8 - Question 11

A wooden block (relative density = 0.65) floats above surface of a liquid of relative density of 1.35, contained in a tank. The volume fraction of metallic piece lies above the liquid surface is


Detailed Solution for Practice Test: Mechanical Engineering (ME)- 8 - Question 11

Let V be total volume of wooden block and V’ is the volume that lies immersed in the liquid.
Using principle of floatation,
Weight of wooden block = weight of the liquid displaced by the immersed portion of the wooden block

So, the volume fraction of wooden block below the liquid surface = 1 – 0.4815 = 0.5185

Practice Test: Mechanical Engineering (ME)- 8 - Question 12

Match the following lists and choose the correct answer using the codes given below

Detailed Solution for Practice Test: Mechanical Engineering (ME)- 8 - Question 12

Practice Test: Mechanical Engineering (ME)- 8 - Question 13

In a 1:36 scale model test of a spillway, discharge of flow over the model is 6 m3/s. If the velocity of flow over model was found to be 5 knots, then the velocity of flow over prototype in m/s will be

Detailed Solution for Practice Test: Mechanical Engineering (ME)- 8 - Question 13

Qm = 6 m3/s, Vm = 5 knots = 5 × 0.515 =2.575 m/s Using dimensional analysis

Practice Test: Mechanical Engineering (ME)- 8 - Question 14

A cylindrical pipe is made up of copper having E=120 Gpa and A=110 mm2. This cylindrical tube is covered with an aluminum tube having E=70 Gpa and A=70 mm2. If the two assembly are in parallel and is loaded with a force of 70 KN. Find the deflection of the whole assembly under this loading. Given length of the tube is 500 mm.

Detailed Solution for Practice Test: Mechanical Engineering (ME)- 8 - Question 14

Practice Test: Mechanical Engineering (ME)- 8 - Question 15

A bar of uniformly tapering section with 75 mm and 150 mm diameter, is held between two parallel end supports 6 m apart. If the length of the bar is 5.998 m, then stress induced in the bar for a temperature change of 30oC will be (Take coefficient of thermal expansion =12×10-6 per oC and E = 2×105 N/mm2)

Detailed Solution for Practice Test: Mechanical Engineering (ME)- 8 - Question 15

Expansion of bar due to temperature only,
ΔL = αtL = 12 x 10-6 x 30 x 5.5 = 1.98 x 10-3 m
Since (6 – 5.998 = 0.002 m) of expansion is allowed, but expansion in bar due to temperature change is 0.00198 m, which is less than 0.002 m. Hence there will not be any stress inside the bar.

*Answer can only contain numeric values
Practice Test: Mechanical Engineering (ME)- 8 - Question 16

A spherical body of diameter 750mm of initial temperature 25℃ is immersed in the fluid at temperature 400℃. Thermo physical properties of the body are k=22W/m-K, c=400 J/kg and ρ=9000kg/m3 (Regular notations used). Determine the time (in seconds) when the temperature will become 390℃, given the convective heat transfer coefficient between body and fluid is 300W/m2.


Detailed Solution for Practice Test: Mechanical Engineering (ME)- 8 - Question 16

Practice Test: Mechanical Engineering (ME)- 8 - Question 17

Which of the following statement is correct regarding transportation

Detailed Solution for Practice Test: Mechanical Engineering (ME)- 8 - Question 17

• North-West corner method gives initial feasible solution
• Hungarian method is used to solve transportation problem

Practice Test: Mechanical Engineering (ME)- 8 - Question 18

Consider a project given below

The variance for the project will be

Detailed Solution for Practice Test: Mechanical Engineering (ME)- 8 - Question 18


From the network, we can see that critical path is A – C – E (1 – 2 – 4 – 6).
Now variance of the project is

Practice Test: Mechanical Engineering (ME)- 8 - Question 19

Guest’s theory of failure is best suited for

Detailed Solution for Practice Test: Mechanical Engineering (ME)- 8 - Question 19

Maximum shear stress theory is given by Guest. According to this theory,

Since the shear stress at yield point in a simple tension test is equal to one-half the yield stress in tension, therefore the equation may be written as

This theory is mostly used for designing members of ductile materials.

Practice Test: Mechanical Engineering (ME)- 8 - Question 20

In automobiles, the brakes used in hand braking systems are usually

Detailed Solution for Practice Test: Mechanical Engineering (ME)- 8 - Question 20

In automobiles, the brakes used in hand braking systems are usually externally contracting brakes.

Practice Test: Mechanical Engineering (ME)- 8 - Question 21

In AJM process nozzle tip distance changes with MRR

*Answer can only contain numeric values
Practice Test: Mechanical Engineering (ME)- 8 - Question 22

A 50mm thick strip rolled to 30mm thickness in 3 passes with equal reduction in each pass by using rolls of 600mm diameter, what is the minimum coefficient of friction required for rolling operation________.


Detailed Solution for Practice Test: Mechanical Engineering (ME)- 8 - Question 22

*Answer can only contain numeric values
Practice Test: Mechanical Engineering (ME)- 8 - Question 23

A rectangular hole of size 50mm x 60mm is to be made on a 8 mm thick sheet having ultimate tensile strength and sheer strength of 500MPa & 300MPa respectively the punching force required (in KN) is__________.


Detailed Solution for Practice Test: Mechanical Engineering (ME)- 8 - Question 23

Practice Test: Mechanical Engineering (ME)- 8 - Question 24

Which of the following is not related to soldering operation:

Detailed Solution for Practice Test: Mechanical Engineering (ME)- 8 - Question 24

Soldering operation is a solid-liquid (heterogeneous) welding process.

Practice Test: Mechanical Engineering (ME)- 8 - Question 25

A metric thread of pitch 3mm and diameter 30mm, inspected for its pitch diameter using 2- wire method. The diameter of best size wire in mm is

Detailed Solution for Practice Test: Mechanical Engineering (ME)- 8 - Question 25

For metric thread included angle is taken 600

Practice Test: Mechanical Engineering (ME)- 8 - Question 26

Hardenability of steel can be improved by adding which of the following element

Detailed Solution for Practice Test: Mechanical Engineering (ME)- 8 - Question 26

Molybdenum, Chromium, Nickel, Boron are used to increase hardenability.

Practice Test: Mechanical Engineering (ME)- 8 - Question 27

The value of sensitivity for an isochronous governor is

Detailed Solution for Practice Test: Mechanical Engineering (ME)- 8 - Question 27

Isochronous governor is that governor which has same speed for all position of sleeves and sensitivity equal to infinity. Therefore right option is (c).

Practice Test: Mechanical Engineering (ME)- 8 - Question 28

Match list I (terms) with list II (definition) and select the correct answer using the codes given below the lists:
List I
A) Base circle
B) Trace point
C) Pitch point
D) Prime circle
List II
I. Smallest circle that can be draw from the centre of cam and tangent to pitch curve
II. Smallest circle that can be draw from the centre of cam through the pitch points
III. Point on pitch curve having the maximum pressure angle
IV. Point on pitch curve having the minimum pressure angle
V. Smallest circle that can be draw to the cam profile
VI. Reference point on follower and used to generate pitch curve
Codes:
A B C D

Detailed Solution for Practice Test: Mechanical Engineering (ME)- 8 - Question 28

Base circle → smallest circle that can be draw to the cam profile
Trace point →  Reference point on follower and used to generate pitch curve
Pitch point →  Point on pitch curve having the maximum pressure angle
Prime circle →  smallest circle that can be draw from the centre of cam and tangent to the pitch curve

*Answer can only contain numeric values
Practice Test: Mechanical Engineering (ME)- 8 - Question 29

A milk chilling unit can remove heat from the milk at the rate of 42 MJ/h. The rate of heat leakage into the milk from the surrounding is 4.2 MJ/h. The specific heat of milk above the freezing point is 4.2 kJ/kg K and below the freezing point is 2.1 kJ/kg K. The freezing point of milk is -2 oc and the latent heat is 100 kJ/kg. The time required (in min) for cooling a batch of 100 kg milk from 47 oc to -5 oc is


Detailed Solution for Practice Test: Mechanical Engineering (ME)- 8 - Question 29

Suppose the time required is t hrs then
The amount of heat removed
= heat removed to decrease the temperature from 47 oc to -2 oc + latent heat + heat removed to decrease the temperature from -2 oc to -5 oc
(42000 – 4200)t = 100 ×[4.2 × (47+2) + 100 + 2.1× (−2+5)]
t = 0.825 hr = 49.5 min

*Answer can only contain numeric values
Practice Test: Mechanical Engineering (ME)- 8 - Question 30

A power plant operating on a closed Brayton cycle operates between pressure of 1 bar and 8 bar. Compression and Expansion both are isentropic. The heat absorbed by the coolant per kg kW output of air which is used to cool the air after expansion in turbine is_____


Detailed Solution for Practice Test: Mechanical Engineering (ME)- 8 - Question 30


Heat supplied per kg-kW output,

Heat supplied=2.23 kW
Hence, heat rejected = heat absorbed by the coolant= 1.23

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