Power Systems Lightning arresters are used to protect electrical equipment against power frequency of over voltages. direct strokes of lightning. over currents due to lightning stroke. over voltages due to indirect lightning stroke. power frequency of over voltages. direct strokes of lightning. over currents due to lightning stroke. over voltages due to indirect lightning stroke. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Resistance switching in normally employed in all breakers. minimum oil breakers. bulk oil breakers. air blast circuit breaker. all breakers. minimum oil breakers. bulk oil breakers. air blast circuit breaker. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The use of high speed circuit breakers reduces the short circuit current. decrease system stability. improves system stability. increased the short circuit current. reduces the short circuit current. decrease system stability. improves system stability. increased the short circuit current. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Zero sequence currents can flow from a line into a transformer bank if the windings are in star / grounded star. ground star / delta. delta / delta. delta / star. star / grounded star. ground star / delta. delta / delta. delta / star. 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. 0.125 pu. 3.000 pu. 0.075 pu. 0.200 pu. 0.125 pu. 3.000 pu. 0.075 pu. ANSWER DOWNLOAD EXAMIANS APP
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