MGVCL Exam Paper (30-07-2021 Shift 2)
What is the full form of the acronym 'AIDS' in diseases?

Acquired Immune Deficiency Syndrome
Acquire in Deficiency Syndrome
Amino Intersect Deficiency Syndrome
Assert in Dander Syndrome

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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.

66.32 µF
76.32 µF
86.32 µF
96.32 µF

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MGVCL Exam Paper (30-07-2021 Shift 2)
In the circuit of figure, the switch is closed to position-1 for a long time. At t = 0 the switch position is changed from postion-1 to postion-2. Find an expression for the current i(t).

i(t) = (E/R) cos√(LC) t A
i(t) = (E/R) sin[1/√(LC)]t A
i(t) = (E/R) cos[1/√(LC)]t A
i(t) = (E/R) sin√(LC) t A

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MGVCL Exam Paper (30-07-2021 Shift 2)
The magnitude of the generator earth-fault current is limited by

inserting the stabilizing resistance in series with the relay
controlling field exciter
using higher rating CTs
inserting suitable resistance in neutral grounding circuit

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MGVCL Exam Paper (30-07-2021 Shift 2)
The wind speed increases with height because of

reduction in lift effect of the air
enhancement of drag effect on the earth surface
reduction in the gravitational force
reduction of drag effect of the earth surface

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