Power Systems Advantages of pumped storage plants is/are used as load frequency control All of these most economical as a peak load supply plant operating time is minimum used as load frequency control All of these most economical as a peak load supply plant operating time is minimum ANSWER DOWNLOAD EXAMIANS APP
Power Systems A power system consists of 300 buses out of which 20 buses are generator buses, 25 buses are the ones with reactive power support buses and 15 buses are ones with fixed shunt capacitors. All the other buses are load buses. It is proposed to perform a load flow analysis for the system using Newton-Raphson Jacobian matrix is 540×540 553×553 555×555 554×554 540×540 553×553 555×555 554×554 ANSWER DOWNLOAD EXAMIANS APP
Power Systems The inertia constant of 100 MVA, 50 Hz, 4 pole generator is 10 MJ/MVA. If the mechanical input to the machine is suddenly raised from 50 MW to 75 MW, the rotor acceleration will be equal to 22.5 electrical degrees/s² 125 electrical degrees/s² 225 electrical degrees/s² 12.5 electrical degrees/s² 22.5 electrical degrees/s² 125 electrical degrees/s² 225 electrical degrees/s² 12.5 electrical degrees/s² ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 3-phase transmission line operating at Vs = 400 kV and has ABCD parameters A= D = 0.8∠0°, B = 100∠90° Ω, C = 0.5*10-6∠90° ℧. Find the no load receiving end voltage? 600 kV 400 kV 320 kv 500 kV 600 kV 400 kV 320 kv 500 kV ANSWER DOWNLOAD EXAMIANS APP
Power Systems Most commonly used material for insulator is glass mica porcelain All of these glass mica porcelain All of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems The corona loss on a particular system at 60 Hz is 1 kW/km per phase. What is the corona loss at 50 Hz in kW/km per phase? 0.93 1 0.882 1.13 0.93 1 0.882 1.13 ANSWER DOWNLOAD EXAMIANS APP
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