Power Systems Length of the cable is doubled, its capacitance C will be one-fourth. unchanged. one-half. doubled. one-fourth. unchanged. one-half. doubled. 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 -0.92 -0.56 0.56 0.92 -0.92 -0.56 0.56 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following is/are the effects of corona charging current increases interference decreases power loss decreases All of these charging current increases interference decreases power loss decreases All of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems The internal flux linkage due to internal flux of a conductor is I/2*10-7 wb-T/m I/6*10-7 wb-T/m All of these I/4*10-7 wb-T/m I/2*10-7 wb-T/m I/6*10-7 wb-T/m All of these I/4*10-7 wb-T/m ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line is compensated with shunt capacitance Csh. If the uncompensated transmission line surge impedance is Zs, then find the new surge impedance Zn after shunt compensation? √(1 + Kcsh)/Zs All of these Zs*√(1 + Kcsh) Zs/√(1 + Kcsh) √(1 + Kcsh)/Zs All of these Zs*√(1 + Kcsh) Zs/√(1 + Kcsh) ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 1- phase transmission line operating at 30 kV has radius of 1 cm and distance between conductors is 0.5 m. Assume m = δ =1, g = 21 kV/cm and frequency f = 50 Hz. Find the critical disruptive voltage? 82.15 kV/phase 17.32 kV/phase 34.64 kV/phase 41.075 kV/phase 82.15 kV/phase 17.32 kV/phase 34.64 kV/phase 41.075 kV/phase ANSWER DOWNLOAD EXAMIANS APP
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