MGVCL Exam Paper (30-07-2021 Shift 3)
The DC offset in fault current causes conventional over-current (OC) relays to :

over-reach
under-reach
sometimes under-reach and sometimes over-reach
reach remains unaffected due to DC offset

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MGVCL Exam Paper (30-07-2021 Shift 3)
The sites where the capacity factor is ____ are not considered suitable for wind power generation.

greater than 24%
less than 24%
greater than 12%
less than 12%

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MGVCL Exam Paper (30-07-2021 Shift 3)
What are the main challenges that the electric grid faces?

Global rise in temperature
Increase in Energy Demand
All of these
Reliability and Power Quality is Declining

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MGVCL Exam Paper (30-07-2021 Shift 3)
A conductor having surface density is embedded in a dielectric medium of permittivity. The electric field in the medium is E. If it is known that the pressure p on the conductor surface is equal to the electric energy density in the medium, then p (in SI unit)is given by

σ²/(2πε)
σ/(4πε)
σ²/(4π)
σ²/(2ε)

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MGVCL Exam Paper (30-07-2021 Shift 3)
In a single phase energy meter, the pressure / voltage coil is wound on

both the limbs of the laminated core with different turns
the centre limb of the laminated core / the middle limb of the shunt magnet
both the limbs of the laminated core with same turns
the edges of the limb on the laminated core

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