MGVCL Exam Paper (30-07-2021 Shift 2)
Operating system is

a program that runs for short duration
a program that runs during log off
a layer between the user and the hardware
a program that runs during log off

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MGVCL Exam Paper (30-07-2021 Shift 2)
The voltage applied to a transformer primary is increased keeping V/f constant. With this, the core loss ____ and the magnetizing current (Im) ____

decreases, increases
remains constant, decreases
increases, remains constant
increases, increases

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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
76.32 µF
66.32 µF
96.32 µF

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