Power Systems Where air circuit breakers are used? Up to 11 kV. Up to 12 kV. Up to 33 kV. Up to 66 kV. Up to 11 kV. Up to 12 kV. Up to 33 kV. Up to 66 kV. ANSWER DOWNLOAD EXAMIANS APP
Power Systems If a 500 MVA, 11 kV 3-phase generator at 50 Hz feeds through a transfer impedance of (0+j0.605) Ω/phase, an infinite voltage also at 11 kV, then the maximum steady state power transfer on the base of 500 MVA and 11 kV is 0.4 pu 1 pu 0.8 pu 0.5 pu 0.4 pu 1 pu 0.8 pu 0.5 pu 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. Vacuum CB. Any of these. Oil CB. Air blast CB. Vacuum CB. Any of these. ANSWER DOWNLOAD EXAMIANS APP
Power Systems If a generator of 250 MVA rating has an inertia constant of 6 MJ/MVA, its inertia constant on 100 MVA base is 2.5 MJ/MVA 10.5 MJ/MVA 15 MJ/MVA 6 MJ/MVA 2.5 MJ/MVA 10.5 MJ/MVA 15 MJ/MVA 6 MJ/MVA ANSWER DOWNLOAD EXAMIANS APP
Power Systems A string type insulator has three units with self capacitance C and ground capacitance of 0.2 C having a string efficiency of 76% 78% 80% 82% 76% 78% 80% 82% ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 200 MW capacity generator has a speed regulation of 4% for a frequency drop of 0.05 Hz. Find the power input supplied by the turbine for maintaining constant frequency? 5 MW 10 MW 20 MW 15 MW 5 MW 10 MW 20 MW 15 MW ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS