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

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Recently, which country has withdrawn the 'Generalized System of Preferences' with India?

Peru
Pakistan
United States of America
Russia

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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

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

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MGVCL Exam Paper (30-07-2021 Shift 2)
A THHN conductor will have a 60˚C termination on one end and a 75˚C termination on the other, which ampacity column will be used?

75˚C column
None of these
60˚C column
90˚C column

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Conductor with higher temperature ratings, provide the ampacity is determined based on the 60°C ampacity of the conductor.

MGVCL Exam Paper (30-07-2021 Shift 2)
A delta-connected balanced three-phase load is supplied from a three-phase, 400 V supply. The line current is 20 A and the power taken by the load is 10 kW. Find the power factor.

0.82
0.52
0.72
0.62

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

P = 10 kW
VL = 400 V
IL = 20 A

3- phse power, P = √3*VL*IL*cosφ

cosφ = 10*1000/(√3*400*20)
= 0.7216

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

B
A
D
C

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)
નીચે પૈકી કયો 'દાદુર' નો સમાનર્થી નથી

સુમાર
દેડકો
મેડક
દર્દુર

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