MGVCL Exam Paper (30-07-2021 Shift 1)
What are the states of the three ideal diodes of the circuit shown in figure ?

D1 OFF, D2 ON, D3 ON
D1 OFF, D2 ON, D3 OFF
D1 ON, D2 OFF, D3 OFF
D1 ON, D2 OFF, D3 ON

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MGVCL Exam Paper (30-07-2021 Shift 1)
Voltage dips cannot be caused by which of the following:

Capacitive Switching
Switching on of Large Loads
Local and Remote faults
Inductive Loading

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MGVCL Exam Paper (30-07-2021 Shift 1)
A coil having an inductance of 100 mH is magnetically coupled to another coil having an inductance of 900 mH. The coefficient of coupling between the coils is 0.45. Calculate the equivalent inductance if the two coils are connected in series aiding.

1135 mH
730 mH
1270 mH
932 mH

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MGVCL Exam Paper (30-07-2021 Shift 1)
In underground cables, the electrostatic stress is ___ at contactor surface and ___ at the sheath.

zero, minimum
minimum, maximum
zero, zero
minimum, maximum

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