MGVCL Exam Paper (30-07-2021 Shift 1)
A grid interactive solar system:

always supplies power to the grid
always receives power from the grid
works only when the grid fails
supplies power to as well as receives power from the grid as required

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

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