Power Systems When a transformer is loaded, the secondary terminal voltage gains. That means power factor is lagging. zero. leading. unity. lagging. zero. leading. unity. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Lightning arresters are used to protect electrical equipment against power frequency of over voltages. direct strokes of lightning. over voltages due to indirect lightning stroke. over currents due to lightning stroke. power frequency of over voltages. direct strokes of lightning. over voltages due to indirect lightning stroke. over currents due to lightning stroke. ANSWER DOWNLOAD EXAMIANS APP
Power Systems In a 4 bus,4×4 Y bus matrix the number of non zero elements are 12. Find the number of transmission lines? 8 5 4 2 8 5 4 2 ANSWER DOWNLOAD EXAMIANS APP
Power Systems For flat voltage profile system, voltage regulation is 0% any of the above 100% 50% 0% any of the above 100% 50% ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following power stations is mainly used to cover peak load on the system? pumped storage hydro power plant nuclear plant coal based thermal power plant gas based thermal power plant pumped storage hydro power plant nuclear plant coal based thermal power plant gas based thermal power plant ANSWER DOWNLOAD EXAMIANS APP
Power Systems The skin effect shows that the distribution of AC current is uniform through the cross section of the conductor current density is lower at the surface of the condutor current density is more at the surface of the condutor current density is more at the centre of the condutor the distribution of AC current is uniform through the cross section of the conductor current density is lower at the surface of the condutor current density is more at the surface of the condutor current density is more at the centre of the condutor ANSWER DOWNLOAD EXAMIANS APP
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