Power Systems A transmission line has impedance of (0.005 + j0.05) pu. Find the line at which maximum value of negative DC off set current is produced, if it is applied with Vm sinωt? 4.68 msec 2.63 msec 1.47 msec 9.68 msec 4.68 msec 2.63 msec 1.47 msec 9.68 msec ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following materials is/are used as moderators? All of these beryllium graphite heavy water All of these beryllium graphite heavy water ANSWER DOWNLOAD EXAMIANS APP
Power Systems The specific speed of water turbine is the speed at which the turbine develops unit horse power at all heads. maximum horse power. a minimum horse power. unit horse power at unit head. unit horse power at all heads. maximum horse power. a minimum horse power. unit horse power at unit head. ANSWER DOWNLOAD EXAMIANS APP
Power Systems In a 3-phase transmission line, each phase is supported by 3 insulated discs, maximum voltage of each disc is 20 kV. Find the operating voltage of the transmission line per phase if efficiency of string is 80.6%. 48.36 kV 52.84 kV 20 kV 83.76 kV 48.36 kV 52.84 kV 20 kV 83.76 kV ANSWER DOWNLOAD EXAMIANS APP
Power Systems If the rated receiving end voltage is 33 kV, then what are the limits for safe operation of equipments? 33 to 50 kV 25 to 35 kV 31.35 to 34.65 kV any voltage above 33 kV 33 to 50 kV 25 to 35 kV 31.35 to 34.65 kV any voltage above 33 kV ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 200 MVA alternator operated at no load at frequency of 50 Hz, it has inertia constant of 5 MWsec/MVA and governing system has a time delay of 0.6 sec. If the load of 50 MW is suddenly applied then find the frequency deviation during this time? 0.76 Hz -0.76 Hz 0.85 Hz -0.85 Hz 0.76 Hz -0.76 Hz 0.85 Hz -0.85 Hz ANSWER DOWNLOAD EXAMIANS APP
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