MGVCL Exam Paper (30-07-2021 Shift 2)
In a single phase energy meter, the shunt electromagnet is energized by a ____of ____

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

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MGVCL Exam Paper (30-07-2021 Shift 2)
If no load is connected to solar PV system,

its voltage will go on increasing till its breakdown
it will stop absorbing light
it will start reflecting the light
it will dissipate energy in the panel and increase its temperature

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MGVCL Exam Paper (30-07-2021 Shift 2)
A circular loop has its radius increasing at a rate of 2 m/s. The loop is placed perpendicular to a constant magnetic field of 0.1 Wb/m². When the radius of the loop is 2 m, the emf induced in the loop will be

0.8π V
0.4π V
zero
0.2π V

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MGVCL Exam Paper (30-07-2021 Shift 2)
A single phase motor connected to 415 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.

86.32 µF
96.32 µF
76.32 µF
66.32 µF

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