MGVCL Exam Paper (30-07-2021 Shift 2)
A single phase 240 V, 1 kW heater is connected across single phase 240 V, 50 Hz supply through an SCR. For firing angle delay of 90˚, calculate the power absorbed in the heater element.

225 W
300 W
275 W
250 W

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MGVCL Exam Paper (30-07-2021 Shift 2)
In a test by Murray loop for ground fault on 600 m of cable having a resistance of 1.5 Ω/km, the faulty cable is looped with a sound cable of the same length and area of cross section. If the ratio of the other two arms of the testing network at balance is 3 : 1, find the distance of the fault from the testing end of cables.

200 m
100 m
400 m
300 m

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MGVCL Exam Paper (30-07-2021 Shift 2)
The magnitude of the generator earth-fault current is limited by

inserting suitable resistance in neutral grounding circuit
controlling field exciter
using higher rating CTs
inserting the stabilizing resistance in series with the relay

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MGVCL Exam Paper (30-07-2021 Shift 2)
Which of the following does the term 'feeder automation' include?

substation reactive power control
All of these
automatic reclosing
feeder remote point voltage control

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