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

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

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MGVCL Exam Paper (30-07-2021 Shift 2)
Thermocouples can be connected in series/parallel to obtain greater sensitivity called as

Thermistor
None of these
Thermopile
Thermometer

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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
66.32 µF
96.32 µF
76.32 µF

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MGVCL Exam Paper (30-07-2021 Shift 2)
Which one of these is not a monitoring and diagnostic test for transformer oil?

Dissolved Metals Analysis
Volatility Level Analysis
Furanic Compound Analysis
Dissolved Gas Analysis

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

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

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MGVCL Exam Paper (30-07-2021 Shift 2)
Interposing current-transformer (CT) is used in differential protection of a transformer to

match the standard ratio of CTs used on both sides of the transformer winding
minimize the effect of saturation of the main CTs
limit the main CT secondary current
increase the sensitivity of the relay

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