Power Systems Two identical synchronous machines having same inertia constant are connected in parallel and swinging together. The effective inertia constant is 4 MJ/MVA. Then each machine has inertia constant of 4 MJ/MVA 2 MJ/MVA 8 MJ/MVA 16 MJ/MVA 4 MJ/MVA 2 MJ/MVA 8 MJ/MVA 16 MJ/MVA ANSWER DOWNLOAD EXAMIANS APP
Power Systems The insulator thickness on the conductor, in cables depends upon voltage power factor current reactive power voltage power factor current reactive power ANSWER DOWNLOAD EXAMIANS APP
Power Systems What is the approximate efficiency of a normal thermal power station? 30-40% 60-70% 20-25% 45-55% 30-40% 60-70% 20-25% 45-55% ANSWER DOWNLOAD EXAMIANS APP
Power Systems An alternator having an induced emf of 1.6 pu is connected to an infinite bus of 1 pu. If the bus bar has reactance of 0.6 pu and alternator has reactance of 0.2 pu, what is the maximum power that can be transferred? 5 pu 6 pu 2 pu 2.67 pu 5 pu 6 pu 2 pu 2.67 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems A power station plant load factor is defined as the ratio of minimum load to average load average load to the peak load the energy generated to that of maximum energy that could have been generated minimum load to peak load minimum load to average load average load to the peak load the energy generated to that of maximum energy that could have been generated minimum load to peak load ANSWER DOWNLOAD EXAMIANS APP
Power Systems In a Gauss Seidel load flow method, the number of iterations may be reduced if the correction in voltage at each bus is multiplied by Blocking factor Lagrange multiplier Gauss constant Acceleration factor Blocking factor Lagrange multiplier Gauss constant Acceleration factor ANSWER DOWNLOAD EXAMIANS APP
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