MGVCL Exam Paper (30-07-2021 Shift 3)
The DC offset in fault current causes conventional over-current (OC) relays to :

over-reach
sometimes under-reach and sometimes over-reach
under-reach
reach remains unaffected due to DC offset

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MGVCL Exam Paper (30-07-2021 Shift 3)
____ is the rms value of AC component of the current in the pole at the instant of contact separation.

Symmetrical short circuit current
Making current
Symmetrical breaking current
Asymmetrical breaking current

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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.

300 m
100 m
400 m
200 m

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