Power Systems Stock bridge dampers are used in case hill areas to over come the which problem? increase string efficiency All of these unequal ice loading increase power factor increase string efficiency All of these unequal ice loading increase power factor ANSWER DOWNLOAD EXAMIANS APP
Power Systems A three phase, 33 kV oil circuit breaker is rated 1200 A, the symmetrical breaking capacity is 2000 MVA, 3 secs. Then the making capacity is 5100 MVA. 5200 MVA. 5500 MVA. 5000 MVA. 5100 MVA. 5200 MVA. 5500 MVA. 5000 MVA. 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? 3 and 1 pu 1 and 3 pu 2 and 5 pu 2 and 2 pu 3 and 1 pu 1 and 3 pu 2 and 5 pu 2 and 2 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems Range of accelerating factor is 10.8 to 11.2 1.6 to 1.8 1 to 10 50 to 100 10.8 to 11.2 1.6 to 1.8 1 to 10 50 to 100 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
Power Systems The positive sequence reactance will be equal to negative sequence if the equipment is none of these. transformer and transmission lines. motor. generator. none of these. transformer and transmission lines. motor. generator. ANSWER DOWNLOAD EXAMIANS APP
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