Power Systems In case of failure of prime mover of the generator, which type of relay is used? reverse power relay distance relays impedance relay offset mho relay reverse power relay distance relays impedance relay offset mho relay ANSWER DOWNLOAD EXAMIANS APP
Power Systems Advantages of per unit system is/are No units for any quantity It has units for all quantities Need of transformation ratio All of these No units for any quantity It has units for all quantities Need of transformation ratio All of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following is/are the disadvantages of phase modifiers? Initial cost of synchronous phase modifier is higher It consumes both active and reactive power It requires more maintenance because of running equipment All of these Initial cost of synchronous phase modifier is higher It consumes both active and reactive power It requires more maintenance because of running equipment All of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems In a thermal power plant, which of its following components needs maximum maintenance attention Boiler. Condenser. Super heater. Steam turbine. Boiler. Condenser. Super heater. Steam turbine. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A pin type insulator has 100 kV puncture voltage. If 10 kV flash over voltage occurred in a transmission line, then find the safety factor of insulator? 0.001 1000 10 0.1 0.001 1000 10 0.1 ANSWER DOWNLOAD EXAMIANS APP
Power Systems What will be the ratio of the C.T. on the H.V side of a 3 - φ star / delta 33 / 11 kV transformer if the protecting CT on the LV side has a ratio of 300 : 5 ? 120 : 6 / √3. 150 : 4 / √3. 100 : 5 / √3. 200 : 5 / √3. 120 : 6 / √3. 150 : 4 / √3. 100 : 5 / √3. 200 : 5 / √3. ANSWER DOWNLOAD EXAMIANS APP