Power Systems A transmission line has a surge impedance of 400 Ω for a length of the line of 200 km. If the length of line is increased to 400 km, then its surge impedance is 0 Ω 800 Ω 400 Ω 200 Ω 0 Ω 800 Ω 400 Ω 200 Ω ANSWER DOWNLOAD EXAMIANS APP
Power Systems Where the voltage is high and current to be interrupted is low, Which of following the breaker is preferable? Oil CB. Air blast CB. Any of these. Vacuum CB. Oil CB. Air blast CB. Any of these. Vacuum CB. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line is operating under no load has ABCD parameters B = 100∠90° has a phase shift of 0.2 rad, how much shunt reactor is required for compensation of ferranti effect? 15.9 mH 2 H 2 mH 15.9 H 15.9 mH 2 H 2 mH 15.9 H ANSWER DOWNLOAD EXAMIANS APP
Power Systems Water hamming process in pen-stocks results in None of these pressure increases. noise increases, pressure increases, velocity decreases. noise increases. None of these pressure increases. noise increases, pressure increases, velocity decreases. noise increases. ANSWER DOWNLOAD EXAMIANS APP
Power Systems In a 400 kV power network, 360 kV is recorded at 400 kV bus. The reactive power absorbed by a shunt reactor for 50 MVAr, 400 kV connected at the bus is 40.5 MVAr. 61.73 MVAr. 45.0 MVAr. 55.56 MVAr. 40.5 MVAr. 61.73 MVAr. 45.0 MVAr. 55.56 MVAr. ANSWER DOWNLOAD EXAMIANS APP
Power Systems For load flow studies, What are the quantities specified at load bus are V and δ P and V P and Q δ and Q V and δ P and V P and Q δ and Q ANSWER DOWNLOAD EXAMIANS APP
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