Impedance relays are used for phase faults on long line.
Answer : The inverse definite mean time relays are used for over current and earth fault protection of transformer against internal short-circuits. ...
Answer : The single phasing relays are used for the protection of three phase motors. ...
IDMT relays are used to protect the transformer against : (A) Internal short -circuits (B) Open circuits (C) External short circuits (D) Oil leakage Answer : IDMT relays are used to protect the transformer against : External short circuits ...
For a 500 Hz frequency excitation, a 50 km long power line will be modeled as Answer : For a 500 Hz frequency excitation, a 50 km long power line will be modeled as long line ...
what is mean by long transmission line ? Answer : The transmission line which have length more than 250 km are known as long transmission lines. ...
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