Power Systems When is the ferranti effect on long overhead lines experienced? The line is lightly loaded The line is heavily loaded The line is fully loaded The power factor is unity The line is lightly loaded The line is heavily loaded The line is fully loaded The power factor is unity ANSWER DOWNLOAD EXAMIANS APP
Power Systems If the frequency is increased, then skin effect will decreases increases any of the above remains unaffected decreases increases any of the above remains unaffected ANSWER DOWNLOAD EXAMIANS APP
Power Systems In order to have lower cost of power generaion the load factor should be high but diversity factor should be low the load factor and diversity factor should be low the load factor should be low but diversity factor should be high The load factor and diversity factor should be high the load factor should be high but diversity factor should be low the load factor and diversity factor should be low the load factor should be low but diversity factor should be high The load factor and diversity factor should be high ANSWER DOWNLOAD EXAMIANS APP
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 reflected voltage? 18.18 kV -81.82 kV -18.18 kV 81.82 kV 18.18 kV -81.82 kV -18.18 kV 81.82 kV ANSWER DOWNLOAD EXAMIANS APP
Power Systems An unloaded generator with a pre-fault voltage 1 pu has the following sequence impedance: Z0 = j 0.15 pu, Z1 = Z2 = j 0.25 pu The neutral is grounded with a reactance of 0.05 pu. The fault current in pu for single line to ground fault is 2.5 pu 4.28 pu 7.25 pu 3.75 pu 2.5 pu 4.28 pu 7.25 pu 3.75 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following relays are used in protection of medium transmission lines? Impedance relays Mho relays any of the above Admittance relays Impedance relays Mho relays any of the above Admittance relays ANSWER DOWNLOAD EXAMIANS APP
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