MGVCL Exam Paper (30-07-2021 Shift 1)
___ is the rms value of the total current comprising the AC and DC components of the current in the circuit breaker pole at the instant of contact separation.

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

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MGVCL Exam Paper (30-07-2021 Shift 1)
A single phase motor connected to 400 V, 50 Hz supply takes 30 A at a power factor of 0.7 lagging. Calculate the capacitance required in parallel with the motor to raise the power factor to 0.9 lagging.

69.5 μF
99.5 μF
89.5 μF
79.5 μF

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MGVCL Exam Paper (30-07-2021 Shift 1)
In a single phase energy meter, the series electromagnet is energized by a ___ of ___

current coil, thin wire of more turns
voltage coil, thick wire of few turns
current coil, thick wire of few turns
voltage coil, thin wire of more turns

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MGVCL Exam Paper (30-07-2021 Shift 1)
___ is the short time reduction in the rms voltage between 0.1 to 0.9 p.u for a duration of ___

Voltage sag, greater than 1 minute
Voltage swell, 0.5 cycle to 1 minute.
Voltage swell, greater than 1 minute
Voltage sag, 0.5 cycle to 1 minute.

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