Power Systems Mho relays are used for the protection of which of the following lines? long transmission lines only short transmission lines only medium transmission lines only None of these long transmission lines only short transmission lines only medium transmission lines only None of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems Recovery voltage in CB is equal to arcing period voltage. normal frequency 50 Hz rms voltage. none of these. transient voltage. arcing period voltage. normal frequency 50 Hz rms voltage. none of these. transient voltage. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Bundled conductors are used for EHV transmission lines primarily for reducing the copper loss corona loss surge impedance of the line voltage drop across the line copper loss corona loss surge impedance of the line voltage drop across the line ANSWER DOWNLOAD EXAMIANS APP
Power Systems The positive, negative and zero sequence impedances of a transmission line are 0.5,0.5 and 1.1 pu respectively. The self (Zs) and mutual (Zm) impedances of the line will be given by Zs = 0.7 pu, Zm =0.2 pu Zs = 0.5 pu, Zm =0.6 pu Zs = 0.2 pu, Zm =0.7 pu Zs = 0.6 pu, Zm =0.5 pu Zs = 0.7 pu, Zm =0.2 pu Zs = 0.5 pu, Zm =0.6 pu Zs = 0.2 pu, Zm =0.7 pu Zs = 0.6 pu, Zm =0.5 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems Capacitance voltage transformer ( CVT ) is used to reduce losses in a transmission line. connect instruments on the LT side. none of these. improve the power factor of the transmission. reduce losses in a transmission line. connect instruments on the LT side. none of these. improve the power factor of the transmission. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The voltage and current instantaneous values are given as 5 sin (ωt + 30°) pu and 2 sin (ωt - 15°) pu respectively. Find the per unit active power? 5.353 pu 7 pu 3.535 pu 5 pu 5.353 pu 7 pu 3.535 pu 5 pu ANSWER DOWNLOAD EXAMIANS APP
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