Power Systems Which of the following power stations is mainly used to cover peak load on the system? gas based thermal power plant pumped storage hydro power plant coal based thermal power plant nuclear plant gas based thermal power plant pumped storage hydro power plant coal based thermal power plant nuclear plant ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line has a surge impedance of 400 Ω is connected with the cable having surge impedance of 40 Ω, a surge magnitude of 100 kV is travelling from the transmission line towards the cable. Find the reflected voltage? -81.82 kV -18.18 kV 81.82 kV 18.18 kV -81.82 kV -18.18 kV 81.82 kV 18.18 kV ANSWER DOWNLOAD EXAMIANS APP
Power Systems A string insulator has 4 units. The voltage across the bottom most unit is 33.33% of total voltage. Its string efficiency is 75% 25% 66.66% 33.33% 75% 25% 66.66% 33.33% ANSWER DOWNLOAD EXAMIANS APP
Power Systems To reduce the radio interference which line is/are transposed? None of these Power line either 1 or 2 Both power and telecommunication lines None of these Power line either 1 or 2 Both power and telecommunication lines ANSWER DOWNLOAD EXAMIANS APP
Power Systems The load duration curve for a system is 8 hours 30 MW, 16 hours 25 MW and 24 hours 20 MW. The load factor will be 0.44. 0.25. 0.83. 1.3. 0.44. 0.25. 0.83. 1.3. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Positive, negative and zero sequence impedances of line are 2,2 and 5 pu respectively. Find self and mutual impedances respectively? 2 and 2 pu 2 and 5 pu 3 and 1 pu 1 and 3 pu 2 and 2 pu 2 and 5 pu 3 and 1 pu 1 and 3 pu ANSWER DOWNLOAD EXAMIANS APP
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