Power Systems Four identical alternators each are rated for 20 MVA, 11 KV having a subtransient reactance of 16% are working in parallel. The short circuit level at the busbar is 500 MVA 125 MVA 400 MVA 100 MVA 500 MVA 125 MVA 400 MVA 100 MVA ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 3-phase, 110 kV coaxial XLPE insulated power cable delivering power at 50 Hz, has a capacitance of 125 nF/km. If the dielectric loss tangent of XLPE is 2*10^-4, then dielcetric power loss in this cable in W/km/phase is 38.6 35.45 31.7 23.9 38.6 35.45 31.7 23.9 ANSWER DOWNLOAD EXAMIANS APP
Power Systems A three phase, 33 kV oil circuit breaker is rated 1200 A, 2000 MVA, 3 secs. The symmetrical breaking current is 35 kA. 50 kA. 55 kA. 45 kA. 35 kA. 50 kA. 55 kA. 45 kA. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A diesel power station has fuel consumption of 0.28 Kg per kWh. The calorific value of fuel is being 10000 KCal / kg. Determine the overall efficiency 30.7 %. 40 %. 40.85 %. 30.26 %. 30.7 %. 40 %. 40.85 %. 30.26 %. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following grounding is not practically preferred for protection of equipments? All of these reactance grounding isolated grounding resistance grounding All of these reactance grounding isolated grounding resistance grounding ANSWER DOWNLOAD EXAMIANS APP
Power Systems Isolator in sub station is open under ------------- condition? full load no load any of the above short circuit full load no load any of the above short circuit ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS