MGVCL Exam Paper (30-07-2021 Shift 2)
A 1000 kVA ONAN cooled transformer has a load of 500 kVA throughout the day except for a period of 4 hours. What is the permissible overload for a duration of four hours. Assume the permissible load kVA as a fraction of rated kVA is 1.24.

1240 kVA
930 kVA
620 kVA
2480 kVA

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MGVCL Exam Paper (30-07-2021 Shift 2)
In a single phase energy meter, the shunt electromagnet is energized by a ____of ____

pressure coil, thin wire of more turns
current coil, thin wire of more turns
current coil, thick wire of few turns
pressure coil, thick wire of few turns

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MGVCL Exam Paper (30-07-2021 Shift 2)
In a typical DC micro grid, hybrid storage system is a combination of

Lead acid battery and Capacitor
None of these
Lead acid battery and ultra capacitor / super capacitor
Lead acid battery and Lithium ion battery

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

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

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