Power Systems Lightning arresters are made up of which material? silicon oxide copper silver any of the above silicon oxide copper silver any of the above ANSWER DOWNLOAD EXAMIANS APP
Power Systems In an induction relay for a particular current setting the operating time 4 sec. When the time multiplier setting is 0.8 if the time multiplier setting is rest to 1 the operating time is 5. un changed. 1. 10. 5. un changed. 1. 10. ANSWER DOWNLOAD EXAMIANS APP
Power Systems In a power system with negligible resistance, the fault current at a point is 8.00 pu. The series reactance is to be included at the fault point to limit the short circuit. current to 5.00 pu is 0.200 pu. 3.000 pu. 0.075 pu. 0.125 pu. 0.200 pu. 3.000 pu. 0.075 pu. 0.125 pu. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 60 Hz, 320 Km loss less line has sending end voltage 1.0 pu. The receiving end voltage on no-load is 1.088 pu. none of these. 1.1 pu. 1.116 pu. 1.088 pu. none of these. 1.1 pu. 1.116 pu. ANSWER DOWNLOAD EXAMIANS APP
Power Systems To prevent maloperation of deferentially connected relay while energizing a transformer, the relay restraining coil is biased with 2nd harmonic current. 7th harmonic current. 5th harmonic current. 3rd harmonic current. 2nd harmonic current. 7th harmonic current. 5th harmonic current. 3rd harmonic current. ANSWER DOWNLOAD EXAMIANS APP
Power Systems What is the preferred type of circuit breaker(CB) to be installed in extra high voltage AC system? Air blast CB Bulk oil type CB Sulphur hexafluoride CB Vacuum CB Air blast CB Bulk oil type CB Sulphur hexafluoride CB Vacuum CB ANSWER DOWNLOAD EXAMIANS APP
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