Power Systems A transmission line has 50 km operating at frequency of 500 Hz. Find the type of the line? short transmission line any of the above long transmission line medium transmission line short transmission line any of the above long transmission line medium transmission line 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 0.85 Hz -0.85 Hz -0.76 Hz 0.76 Hz 0.85 Hz -0.85 Hz -0.76 Hz 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. 5000 MVA. 5200 MVA. 5500 MVA. 5100 MVA. 5000 MVA. 5200 MVA. 5500 MVA. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The incremental fuel costs for two generating units G1 and G2 are given by Ic1 = 25 + 0.2 PG1 and Ic2 = 32 + 0.2 PG2, where PG1 and PG2 are real powers generated by the units. The economic allocation for a total load of 250 MW, neglecting transmission loss, is given by PG1 = 142.5 MW and PG2 = 107.5 MW PG1 = 125 MW and PG2 = 125 MW PG1 = 100 MW and PG2 = 150 MW PG1 = 109.75 MW and PG2 = 140.25 MW PG1 = 142.5 MW and PG2 = 107.5 MW PG1 = 125 MW and PG2 = 125 MW PG1 = 100 MW and PG2 = 150 MW PG1 = 109.75 MW and PG2 = 140.25 MW ANSWER DOWNLOAD EXAMIANS APP
Power Systems To improve the efficiency of thermal power plant ________________ is placed between boiler and turbine. air preheater. superheater. ash handling point. economizer. air preheater. superheater. ash handling point. economizer. ANSWER DOWNLOAD EXAMIANS APP
Power Systems For variable heads of near about but less than 30 meters, which type of turbine is used in hydro power station? Francis Pelton None of these Kaplan Francis Pelton None of these Kaplan ANSWER DOWNLOAD EXAMIANS APP
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