MGVCL Exam Paper (30-07-2021 Shift 3)
____ is the rms value of AC component of the current in the pole at the instant of contact separation.

Asymmetrical breaking current
Symmetrical breaking current
Making current
Symmetrical short circuit current

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MGVCL Exam Paper (30-07-2021 Shift 3)
A delta-connected balanced three-phase load is supplied from a three phase, 400 V supply. The line current is 20 Aand the power taken by the load is 10 kW. Find the power consumed if the same load is connected in star.

30 W
16.33 W
21.77 W
3.33 W

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MGVCL Exam Paper (30-07-2021 Shift 3)
Consider the following statements associated with Buchholz’s relays.
Statement 1: Buchholz's relay is used for protection of a transformer against incipient faults.
Statement 2: Buchholz's relay can be installed on oil cooled transformers.

Statement 1 is FALSE and Statement 2 is TRUE
Statement 1 is TRUE and Statement 2 is FALSE
Both Statement 1 and Statement 2 are TRUE
Both Statement 1 and Statement 2 are FALSE

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MGVCL Exam Paper (30-07-2021 Shift 3)
A 10 A, Type C Miniature Circuit Breaker (MCB) will trip at fault currents

less than 10 A
greater than 100 A
between 50 A and 100 A
between 10 A and 50 A

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