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MGVCL Exam Paper (30-07-2021 Shift 2)

MGVCL Exam Paper (30-07-2021 Shift 2)
Find the word which is correctly spelt from the given options.

Absurrd
Sentimant
Maximum
Wrinkel

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MGVCL Exam Paper (30-07-2021 Shift 2)
In transformer, bushing failure occurs due to
(i) transformer vibrations
(ii) dielectric losses
(ii) partial discharge

(ii) and (iii) only
(i), (ii) and (iii)
(i) and (iii) only
(i) and (ii) only

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MGVCL Exam Paper (30-07-2021 Shift 2)
In a synchronous motor with field under excited, the power factor will be

lagging
leading
zero
unity

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

For synchronous motor,
Under excitation - Lagging power factor
Over excitation - Leading power factor

For synchronous generator
Under excitation - Leading power factor
Over excitation - lagging power factor

MGVCL Exam Paper (30-07-2021 Shift 2)
A three-phase, 4-pole, 50 Hz induction motor runs at 1425 rpm. Find out the percentage slip of the induction motor.

5%
3%
4%
6%

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Slip, s = (Ns - Nr)/Ns
Ns = 120f/P
Ns = 1500 rpm

s = (1500 - 1425)/1500
s = 0.05
%s = 5%

MGVCL Exam Paper (30-07-2021 Shift 2)
The single line diagram of the simple power system is shown in figure the corresponding reactance diagram is

C
D
A
B

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Simple logic of reactance diagram is that simplified equivalent circuit of power system in which the various components of power system are represented by their reactances.
The reactance diagram can be obtained from impedance diagram if all the resistive components are neglected.

MGVCL Exam Paper (30-07-2021 Shift 2)
Recently, which country has withdrawn the 'Generalized System of Preferences' with India?

Pakistan
Peru
Russia
United States of America

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MORE MCQ ON MGVCL Exam Paper (30-07-2021 Shift 2)

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