Power Systems Which of the following relationships are not valid for short transmission lines B = C = Z Is = Ir A = D = 1 All of these B = C = Z Is = Ir A = D = 1 All of these 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 pu 3.535 pu 5.353 pu 7 pu 5 pu 3.535 pu 5.353 pu 7 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems The ABCD constants of a 3-phase transmission line are A = D = 0.8∠1°, B = 170∠85° Ω , C = 0.002∠90.4° ℧. The sending end voltage is 400 kV. The receiving end voltage under no load condition is 350 kV 400 kV 600 kV 500 kV 350 kV 400 kV 600 kV 500 kV ANSWER DOWNLOAD EXAMIANS APP
Power Systems A string insulator has 4 units. The voltage across the bottom most unit is 33.33% of total voltage. Its string efficiency is 66.66% 75% 25% 33.33% 66.66% 75% 25% 33.33% ANSWER DOWNLOAD EXAMIANS APP
Power Systems Pelton wheel turbine is a none of above. low head turbine. medium head turbine. high head turbine. none of above. low head turbine. medium head turbine. high head turbine. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A pin type insulator has 100 kV puncture voltage. If 10 kV flash over voltage occurred in a transmission line, then find the safety factor of insulator? 0.001 1000 10 0.1 0.001 1000 10 0.1 ANSWER DOWNLOAD EXAMIANS APP
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