MGVCL Exam Paper (30-07-2021 Shift 1)
While selecting the gas for a circuit breaker, the property of gas that should be considered is its
(i) dielectric strength
(ii) non-inflammability
(iii) non-toxicity

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

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MGVCL Exam Paper (30-07-2021 Shift 1)
For protection of inter-turn fault in transformer, the relays preferred are

Overcurrent relay and Buchholz's relay
Buchholz's relay and differential relay
Buchholz's relay, overcurrent relay and differential relay
Overcurrent relay and differential relay

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MGVCL Exam Paper (30-07-2021 Shift 1)
An RC series circuit with R = 150 Ω and C = 2 μF is excited by a DC source of 15 V by closing the switch at t = 0 with an initially uncharged capacitor. The initial and final voltages across the capacitor respectively are

0 V, 10 V
10 V, 15 V
0 V, 15 V
15 V, 10 V

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