Power Systems A transmission line has a surge impedance of 400 Ω is connected with the cable having surge impedance of 40 Ω, a surge magnitude of 100 kV is travelling from the transmission line towards the cable. Find the transmitted voltage? 30.6 Kv 18.18 kV 100 kV 36. 36 kV 30.6 Kv 18.18 kV 100 kV 36. 36 kV ANSWER DOWNLOAD EXAMIANS APP
Power Systems Earth fault relay uses the which of the following sequence currents? any of the above negative sequence zero sequence positive sequence any of the above negative sequence zero sequence positive sequence ANSWER DOWNLOAD EXAMIANS APP
Power Systems An hydro-graph indicates the maximum and minimum run off during the period. the average run off during the period. All of these the discharge at any time during the period under consideration. the maximum and minimum run off during the period. the average run off during the period. All of these the discharge at any time during the period under consideration. ANSWER DOWNLOAD EXAMIANS APP
Power Systems An isolated synchronous generator with transient reactance equal to 0.1 pu on a 100 MVA base is connected to the high voltage bus through a step up transformer of reactance 0.1 pu on a 100 MVA base. The fault level at the bus is 500 MVA 400 MVA 200 MVA 100 MVA 500 MVA 400 MVA 200 MVA 100 MVA ANSWER DOWNLOAD EXAMIANS APP
Power Systems Two generating stations delivering a powers of P1 = 150 MW, P2 =100 MW and the B coefficients are B11 = 0.005, B22 = 0.002, B12=B21= -0.001. Find the transmission line losses? 85.5 102.5 105.2 95.5 85.5 102.5 105.2 95.5 ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 100 MVA alternator operating at full load at 50 Hz. H = 4 MWsec/MVA, Td = 0.5 sec. One of the transmission line is tripped. So that output of generator is reduced to 70 MW. Find the frequency deviation during this time? -0.92 -0.56 0.56 0.92 -0.92 -0.56 0.56 0.92 ANSWER DOWNLOAD EXAMIANS APP
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