Power Systems What is the preferred type of circuit breaker(CB) to be installed in extra high voltage AC system? Bulk oil type CB Sulphur hexafluoride CB Vacuum CB Air blast CB Bulk oil type CB Sulphur hexafluoride CB Vacuum CB Air blast CB ANSWER DOWNLOAD EXAMIANS APP
Power Systems Transmission line has a length of 300 km, operating at sending end voltage Vs = 1 pu, find the receiving end voltage(Vr) at no load? 1 pu 0.098 pu 1.098 pu 0.98 pu 1 pu 0.098 pu 1.098 pu 0.98 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems On which one of the following cycles does a modern steam power plat work Otto cycle. Bell - Coleman cycle. Rankine cycle. Carnot cycle. Otto cycle. Bell - Coleman cycle. Rankine cycle. Carnot cycle. ANSWER DOWNLOAD EXAMIANS APP
Power Systems If the time of operation of a relay for unity TMS is 10 sec. the time of operation of 0.5 TMS will be _______________ secs. 20. 5. 7. 3. 20. 5. 7. 3. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Power system network has a total power of 5000 MW at 50 Hz supplying to the different consumers. Frequency is varying at 1.5% per change of 2% load. Assume R =0.004 Hz/MW. Find the steady state frequency deviation if a sudden loss of 200 MW occur due to tripping of one of the transmission line? 0.48 Hz -0.52 Hz 50 Hz 0.52 Hz 0.48 Hz -0.52 Hz 50 Hz 0.52 Hz ANSWER DOWNLOAD EXAMIANS APP
Power Systems For 66 kV lines the number of insulator discs of each 11 kV used are 6 12 3 5 6 12 3 5 ANSWER DOWNLOAD EXAMIANS APP
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