Switchgear Protections - Study Mode
[#61] Short-circuit currents are due to
Correct Answer
single phase to ground faults
[#62] Resistance grounding is used for voltage between
Correct Answer
(C) 3.3kV and 11kV
[#63] Discrimination between main and back up protection is provided by the use of relays which are
Correct Answer
(C) slow
[#64] Thermal overload relays are used to protect the motor against over current due to
Correct Answer
(B) heavy loads
[#65] When a transmission line is energized, the wave that propagates on it is
Correct Answer
(C) both (A) and (B)