Power Systems Due to proximity effect, the increase in conductor resistance is not negligible in overhead transmission lines communication lines underground cable All of these overhead transmission lines communication lines underground cable All of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems Advantages of pumped storage plants is/are All of these used as load frequency control operating time is minimum most economical as a peak load supply plant All of these used as load frequency control operating time is minimum most economical as a peak load supply plant ANSWER DOWNLOAD EXAMIANS APP
Power Systems Skin effective is more in case of power lines None of these communication lines same in both cases power lines None of these communication lines same in both cases ANSWER DOWNLOAD EXAMIANS APP
Power Systems A steam power generation has an overall efficiency of 20 %. 0.6 Kg of coal is burnt per kWh of electrical energy generated. Calculated the calorific value of fuel 7000 KCal / Kg. 7268.45 KCal / Kg. 7166.67 KCal / Kg. 7562 KCal / Kg. 7000 KCal / Kg. 7268.45 KCal / Kg. 7166.67 KCal / Kg. 7562 KCal / Kg. ANSWER DOWNLOAD EXAMIANS APP
Power Systems IF the time of operation of a relay for unity TMS is 10 sec then the time of operation for 0.5 TMS is 5 sec. 10 sec. none of these. 20 sec. 5 sec. 10 sec. none of these. 20 sec. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A coal fired steam power station working at a plant factor of 80% has one 500 MW generating unit. If the heat content of coal is 2 kWh/kg, the overall plant efficiency is 40% and a train load of coal is 2000 metric tons, then the number of trains required daily for the plant is 6 16 2 10 6 16 2 10 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS