MGVCL Exam Paper (30-07-2021 Shift 3)
What are the main challenges that the electric grid faces?

Global rise in temperature
All of these
Increase in Energy Demand
Reliability and Power Quality is Declining

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MGVCL Exam Paper (30-07-2021 Shift 3)
Determine the ohmic value of the current limiting reactor per phase external to a 40 MVA, 15 kV, 50 Hz, three phase synchronous generator which can limit the current on short circuit of 6 times the full load current. The reactance of the synchronous generator is 0.06 pu.

0.8 Ω
0.4 Ω
0.6 Ω
0.2 Ω

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MGVCL Exam Paper (30-07-2021 Shift 3)
The most commonly used method for the protection of three phase feeder is

Reverse power protection
Differential protection
None of these
Time graded protection

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