Power Systems The per unit impedance of a circuit element is 0.30. If the base kV and base MVA are halved, then the new value of the per unit impedance of the circuit element will be 0.60 0.0030 0.30 0.0060 0.60 0.0030 0.30 0.0060 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Find the surge impedance of a line when inductance is 160 mH and capacitance is 1µF? 800 Ω 160 Ω 400 Ω 200 Ω 800 Ω 160 Ω 400 Ω 200 Ω 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? 34.64 kV/phase 17.32 kV/phase 82.15 kV/phase 41.075 kV/phase 34.64 kV/phase 17.32 kV/phase 82.15 kV/phase 41.075 kV/phase ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of following is a medium and low head turbines None of above. Francis and Kaplan turbines. Kaplan and Francis turbines. Pelton and Kaplan turbines. None of above. Francis and Kaplan turbines. Kaplan and Francis turbines. Pelton and Kaplan turbines. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Stock bridge dampers are used to reduce the vibrations at the point of support increase the sag All of these reduce the tension reduce the vibrations at the point of support increase the sag All of these reduce the tension ANSWER DOWNLOAD EXAMIANS APP
Power Systems Fault calculations using computer are usually done by Z bus method None of these either 1 or 2 Y bus method Z bus method None of these either 1 or 2 Y bus method ANSWER DOWNLOAD EXAMIANS APP
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