Power Systems Lightning arresters are used to protect electrical equipment against 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. power frequency of over voltages. direct strokes of lightning. over currents due to lightning stroke. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Making current is a------------ value? peak value any of the above RMS average peak value any of the above RMS average ANSWER DOWNLOAD EXAMIANS APP
Power Systems In a 3-phase, 5 kV, 5 MVA system, what is the base impedance? 0.5 ohm 5 ohms 50 ohms 500 ohms 0.5 ohm 5 ohms 50 ohms 500 ohms ANSWER DOWNLOAD EXAMIANS APP
Power Systems Stock bridge dampers are used in case hill areas to over come the which problem? All of these increase string efficiency increase power factor unequal ice loading All of these increase string efficiency increase power factor unequal ice loading ANSWER DOWNLOAD EXAMIANS APP
Power Systems The function of a surge tank is to none of above. supply water at constant pressure. relieve water hammer pressure in the penstock. produce surge in the pipeline. none of above. supply water at constant pressure. relieve water hammer pressure in the penstock. produce surge in the pipeline. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following statements is true? Corona loss increases with increase in conductor size and decrease in supply frequency increase in conductor size and increase in supply frequency decrease in conductor size and decrease in supply frequency decrease in conductor size and increase in supply frequency increase in conductor size and decrease in supply frequency increase in conductor size and increase in supply frequency decrease in conductor size and decrease in supply frequency decrease in conductor size and increase in supply frequency ANSWER DOWNLOAD EXAMIANS APP
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