Power Systems
Offset mho relay is used for the protection of equipment when

 loss of excitation of the generator
 failure of prime mover of the generator
None of these
 either 1 or 2

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Power Systems
Which of the following statement is/are true?Zn

 The neutral grounding impedance Zn appears as Zn in zero sequence equivalent circuit
 The neutral grounding impedance Zn appears as 3Zn in zero sequence equivalent circuit
 both 1 and 2
 nether 1 nor 2

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