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Electrical Engineering (EE) Exam  >  Electrical Engineering (EE) Tests  >  MPPGCL JE Electrical Mock Test - 2 - Electrical Engineering (EE) MCQ

MPPGCL JE Electrical Mock Test - 2 - Electrical Engineering (EE) MCQ


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30 Questions MCQ Test - MPPGCL JE Electrical Mock Test - 2

MPPGCL JE Electrical Mock Test - 2 for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The MPPGCL JE Electrical Mock Test - 2 questions and answers have been prepared according to the Electrical Engineering (EE) exam syllabus.The MPPGCL JE Electrical Mock Test - 2 MCQs are made for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for MPPGCL JE Electrical Mock Test - 2 below.
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MPPGCL JE Electrical Mock Test - 2 - Question 1
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The name of the famous mathematician who is credited with discovering the total value of the very first 100 natural numbers is

Detailed Solution for MPPGCL JE Electrical Mock Test - 2 - Question 1

Gauss is the great mathematician who is credited with discovering the total value of the first 100 natural numbers.

MPPGCL JE Electrical Mock Test - 2 - Question 2
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'Ophthalmia' is related to 'Eye' in the same way as 'Rickets' is related to:

Detailed Solution for MPPGCL JE Electrical Mock Test - 2 - Question 2

As 'Ophthalmia' is a disease of 'Eye' in the same way 'Rickets' is the disease of 'Bone'.

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MPPGCL JE Electrical Mock Test - 2 - Question 3
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6 times of a fraction is greater than 7 times of its reciprocal by 11. What is the fraction? 

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MPPGCL JE Electrical Mock Test - 2 - Question 4
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Direction: In a family, there are six members P, Q, R, S, T, U, and V are a married couple. P being the male member. S is the only son of R, who is the brother of P. T is the sister of S. Q is the daughter-in-law of U, whose husband has died.

Q. How is U related to P?
Detailed Solution for MPPGCL JE Electrical Mock Test - 2 - Question 4

P is male member and married to Q.
P is husband and Q is wife.
R is brother of P.
S is the son of R.
T, who is the sister of S will be daughter of R.
Q is the daughter-in-law of U, whose husband has died means U is the mother of P.

MPPGCL JE Electrical Mock Test - 2 - Question 5
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A, B and C can complete a piece of work in 9, 12 and 18 days respectively. They started working together, but A left the work before 4 days of its completion. B also left the work 2 days after A left. In how many days was the work completed? 
Detailed Solution for MPPGCL JE Electrical Mock Test - 2 - Question 5

MPPGCL JE Electrical Mock Test - 2 - Question 6
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Two trains 132 m and 108 m long are running in opposite directions with speeds of 32 km/h and 40 km/h respectively. How long will it take them to cross each other after meeting?
Detailed Solution for MPPGCL JE Electrical Mock Test - 2 - Question 6

Given:

Speed of train1 = 32 km/h

Speed of train2 = 40 km/h

Length of train1 = 132 m

Length of train2 = 108 m

Formula used:

If bodies moving in opposite direction = (x + y) km/h

If bodies moving in same direction = (x – y) km/h

Speed = Distance/Time

1 km/h = (5/18) m/sec

Calculation:

The sum of the length of the train = (132 + 108) m

⇒ 240m

According to the question

Relative speed = (32 + 40) km/h

⇒ 72 km/h

⇒ (72 × 5/18) m/sec = 20 m/sec

Now,

Time taken = Total distance/Speed

⇒ (240/20) sec

⇒ 12 sec

∴ Required time is 12 sec

MPPGCL JE Electrical Mock Test - 2 - Question 7
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When price of sugar is increased by 35% a person gets 14 kg less sugar in Rs 160. Find the new price of sugar per kg? 
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MPPGCL JE Electrical Mock Test - 2 - Question 8
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'Forest' is related to 'Vivarium' in the same way as 'sea' is related to:
Detailed Solution for MPPGCL JE Electrical Mock Test - 2 - Question 8

As 'Forest' and 'Vivarium' have the same meaning in the same 'Sea' and 'Aquarium' have the same meaning.

MPPGCL JE Electrical Mock Test - 2 - Question 9
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What is the discount percentage offered on a book having marked price Rs 2150 being sold at Rs 1892? 
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MPPGCL JE Electrical Mock Test - 2 - Question 10
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Direction: Study the following information carefully and answer the given questions besides.

M, N, O, P, Q, R, S and T are sitting around a circular table and all are facing the centre of the table. M is sitting fourth to the right of N. P is sitting second to the left of N. Q is sitting third to the right of S. T is sitting second to the left of O. S is not sitting beside P. O is not sitting beside M.
Q. Who among the following sits exactly opposite to Q?
Detailed Solution for MPPGCL JE Electrical Mock Test - 2 - Question 10

From the common explanation, we get O sits exactly opposite to Q.

Hence, Option B is correct.

Final Arrangement:

Common Explanation:

References:

M is sitting fourth to the right of N.

P is sitting second to the left of N.

Inferences:

From the above reference, we get the following arrangements:


References:

Q is sitting third to the right of S.

Inferences:

From the above reference, we get two different cases:

Case 1:


Case 2:


References:

S is not sitting beside P.

T is sitting second to the left of O.

O is not sitting beside M.

Inferences:

So, from this case 1 will be eliminated as S is not sitting beside P.

Thus, the final arrangement,

MPPGCL JE Electrical Mock Test - 2 - Question 11
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Which of the following is true with respect to Schottky diode?
Detailed Solution for MPPGCL JE Electrical Mock Test - 2 - Question 11

The Schottky also known as Schottky barrier diode or hot-carrier diode, is a semiconductor diode formed by the junction of a semiconductor with a metal. It has a low forward voltage drop and a very fast switching action. A silicon diode has a typical forward voltage of 600–700 mV, while the Schottky's forward voltage is 150–450 mV. This lower forward voltage requirement allows higher switching speeds and better system efficiency.

MPPGCL JE Electrical Mock Test - 2 - Question 12
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Which of the distribution system is used for balanced loads?
Detailed Solution for MPPGCL JE Electrical Mock Test - 2 - Question 12

Most of the 3-phase loads (e.g. 3-phase induction motors) are balanced and, therefore, we use 3-phase, 3-wire system for balanced loads.

MPPGCL JE Electrical Mock Test - 2 - Question 13
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A 50 Hz,  8-pole, 3-phase induction motor has full-load slip of 4%. The rotor resistance and standstill reactance per phase are 0.01 Ω and 0.1 Ω respectively. The ratio of maximum torque to full-load torque is
Detailed Solution for MPPGCL JE Electrical Mock Test - 2 - Question 13

MPPGCL JE Electrical Mock Test - 2 - Question 14
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A 10 V  source of internal resistance 5Ω is connected to a load of  through a transformer. For maximum power transfer, the turns ratio of the transformer should be
Detailed Solution for MPPGCL JE Electrical Mock Test - 2 - Question 14

MPPGCL JE Electrical Mock Test - 2 - Question 15
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The magnetic flux density in an air-cored coil is 10-2 Wb/m2 With a cast iron core of relative permeability 100 inserted, the flux density will become
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MPPGCL JE Electrical Mock Test - 2 - Question 16
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A change of 5% in supply voltage to a 3 phase induction motor will produce the appropriate change in the torque of-
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MPPGCL JE Electrical Mock Test - 2 - Question 17
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Which of the following semi-conductor parameters vary with temperature?
i) Intrinsic concentration (ηi)
ii) Mobility (μ)
iii) Conductivity (σ)
iv) Energy gap (EG)
Detailed Solution for MPPGCL JE Electrical Mock Test - 2 - Question 17

All the given vary with change in temperature. Their mathematical relation with temperature is given as:
→ ηi2 = A0T3.e(-EGO/kT)
→ μ= T-m ; m=2.5 for electrons and 2.7 for holes
→ σ = σ0 [1+α(T-To)]
→ EG(T) = EG0 - βT

MPPGCL JE Electrical Mock Test - 2 - Question 18
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A certain R-L series combination is connected across a 50 Hz single-phase ac supply. If the instantaneous power drawn was found to be negative for 2 milliseconds in one cycle. The power factor angle of the circuit must be____
Detailed Solution for MPPGCL JE Electrical Mock Test - 2 - Question 18
RL series circuit is an inductive circuit. Voltage leads the current. The instantaneous voltage and current can then be expressed as

The instantaneous power can be obtained by multiplying the two. P =vi.

It can be seen from the diagram that in the angle interval 0 to ϕ, the voltage is positive but the current is negative and hence the power is negative. Similarly, in the angle interval π to π+ϕ the voltage is negative but the current is positive and hence the power is again negative.

In other regions the power is positive. Now we just have to find what time interval corresponds to phase difference ϕ. For this we use the formula,

MPPGCL JE Electrical Mock Test - 2 - Question 19
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In a power plant, a reserve generating capacity which is not in service but is in operation is known as-
Detailed Solution for MPPGCL JE Electrical Mock Test - 2 - Question 19
Hot Reserve: Definition: It is defined as the reserve generating capacity which is available in operation but is not in service.

Hence, the correct option is (A)

MPPGCL JE Electrical Mock Test - 2 - Question 20
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What will happen when the centrifugal switch fails to close?
Detailed Solution for MPPGCL JE Electrical Mock Test - 2 - Question 20
If the centrifugal switch fails to close, the motor will overheat the main winding without any failure of the main winding. The voltage across the winding increases.

Hence, the correct option is (A)

MPPGCL JE Electrical Mock Test - 2 - Question 21
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It is known that the potential difference across a 6 Ω resistor is 48 V. The total current i

entering the circuit is-
Detailed Solution for MPPGCL JE Electrical Mock Test - 2 - Question 21

Given-

Since 6 Ω and 8 Ω resistors are connected in parallel, therefore the voltage across them is the same i.e. 48 V.

Current through 6 Ω resistor = 48/6 A

= 8 A

Current through 8 Ω resistor = 48/8 A

= 6 A

Total current entering the circuit i = (8+6) A

i = 14 A

Hence, the correct option is (C).

MPPGCL JE Electrical Mock Test - 2 - Question 22
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Find for the circuit shown in figure.
Detailed Solution for MPPGCL JE Electrical Mock Test - 2 - Question 22

Current flowing through resistor is zero because the bridge is in balanced condition.

then,

MPPGCL JE Electrical Mock Test - 2 - Question 23
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A single phase transformer has 400 primary and 1000 secondary turns. The net cross-sectional area of the core is 60 cm2 If the primary is connected to 500 V, 50 Hz source, the peak value of flux density in the core is
Detailed Solution for MPPGCL JE Electrical Mock Test - 2 - Question 23

MPPGCL JE Electrical Mock Test - 2 - Question 24
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The open loop control system is one in which __________.
Detailed Solution for MPPGCL JE Electrical Mock Test - 2 - Question 24

One type of control system in which the output has no influence or effect on the control action of the input signal is called an Open-loop system.

MPPGCL JE Electrical Mock Test - 2 - Question 25
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The voltage across the open circuit is?
Detailed Solution for MPPGCL JE Electrical Mock Test - 2 - Question 25

The voltage across all branches in a parallel circuit is the same as that of the source voltage. 
So, the voltage across the 10-ohm resistor and the open circuit is the same=100V.
Hence, the correct option is (A).

MPPGCL JE Electrical Mock Test - 2 - Question 26
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Most economical conductor diameter-
Detailed Solution for MPPGCL JE Electrical Mock Test - 2 - Question 26
For fixed values of the voltage V and overall diameter D1, the gmax will be minimum when is maximum and will be maximum if.

or when or when

Hence, the correct option is (C)

MPPGCL JE Electrical Mock Test - 2 - Question 27
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An electric filament bulb can be worked from-
Detailed Solution for MPPGCL JE Electrical Mock Test - 2 - Question 27
AC means Alternating Current, and DC means Direct Current. For example, a 12V AC power supply has an alternating voltage (which will make an alternating current flow).

Hence, the correct option is (A)

MPPGCL JE Electrical Mock Test - 2 - Question 28
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The calculation of short circuit current enables us-
Detailed Solution for MPPGCL JE Electrical Mock Test - 2 - Question 28
Short circuit current should be around 20 times the rating of the circuit to ensure the branch circuit protection. So to make a proper selection of the transformer only, the calculation of short circuit current is enabled.

Hence, the correct option is (C)

MPPGCL JE Electrical Mock Test - 2 - Question 29
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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-
Detailed Solution for MPPGCL JE Electrical Mock Test - 2 - Question 29

MPPGCL JE Electrical Mock Test - 2 - Question 30
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The inductance of a moving iron instruments is given by L=100+4θ-θ2mH. If spring constant = 8×10-3  then find deflection for a current of 4A –
Detailed Solution for MPPGCL JE Electrical Mock Test - 2 - Question 30

We know that,

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