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. 45 kA. 50 kA. 55 kA. 35 kA. 45 kA. 50 kA. 55 kA. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which type of connection is employed for current transformers for the protection of delta- star connected 3-phase transformer? delta-star star-delta delta-delta star-star delta-star star-delta delta-delta star-star ANSWER DOWNLOAD EXAMIANS APP
Power Systems A power system network has n nodes, Z33 of its bus impedance matrix is j0.5 pu. The voltage at node 3 is 1.3∠ -10°. If capacitor is having reactance of -j3.5 pu is now added to the network between node 3 and reference node, the current drawn by the capacitor in pu is 0.725∠ 80° 0.433∠ 80° 0.371∠ -100° 0.325∠ -100° 0.725∠ 80° 0.433∠ 80° 0.371∠ -100° 0.325∠ -100° ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line has a reactance of 1 Pu is operating at Vs = Vr = 1 Pu. The generator is connected at source end which is delivering 0.5 Pu of active power and the transmission line is compensated with a series capacitance of 0.5 Pu. Find the load angle with series capacitance compensation ? 35.5° 29° 10.5° 14.5° 35.5° 29° 10.5° 14.5° ANSWER DOWNLOAD EXAMIANS APP
Power Systems On which one of the following cycles does a modern steam power plant work? Rankine cycle Otto cycle Bell-Coleman cycle Carnot cycle Rankine cycle Otto cycle Bell-Coleman cycle Carnot cycle ANSWER DOWNLOAD EXAMIANS APP
Power Systems A loss less transmission line has a length of 600 km, find the phase shift of voltage signal? 45° 42° 90° 36° 45° 42° 90° 36° ANSWER DOWNLOAD EXAMIANS APP
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