Power Systems
A buchholz relay is used for

 nether 1 nor 2
 both 1 and 2
 protection of a transformer against all internal faults
 protection of a transformer against all external faults

ANSWER DOWNLOAD EXAMIANS APP

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

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

ANSWER DOWNLOAD EXAMIANS APP