MGVCL Exam Paper (30-07-2021 Shift 3)
Continuous and rapid variations in the load current magnitude which causes voltage variations is known as

Harmonics
Voltage sag
Flicker
Voltage distortion

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

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

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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.

0.2 Ω
0.4 Ω
0.8 Ω
0.6 Ω

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MGVCL Exam Paper (30-07-2021 Shift 3)
Murray loop test is performed on a faulty cable 300 m long. At balance, the resistance connected to the faulty core was set at 20 Ω and the resistance of the resistor connected to the sound core was 40 Ω. Calculate the distance of the fault point from the test end.

200 m
100 m
300 m
400 m

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