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

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

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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)
σ²/(2ε)
σ/(4πε)
σ²/(4π)

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MGVCL Exam Paper (30-07-2021 Shift 3)
Medium voltage covered conductors (MVCC) are produced in voltage rating

less than 3.3 kV
between 6.6 kV to 33 kV
between 132 kV to 200 kV
beyond 200 kV

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MGVCL Exam Paper (30-07-2021 Shift 3)
Continuous and rapid variations in the load current magnitude which causes voltage variations is known as

Flicker
Voltage distortion
Harmonics
Voltage sag

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MGVCL Exam Paper (30-07-2021 Shift 3)
Match the following shown in table

A = (iii), B = (i), C = (ii)
A = (iii), B = (ii), C = (i)
A = (ii), B = (i), C = (iii)
A = (ii), B = (iii), C = (i)

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