Power Systems A thermal power plant is being supplied with coal having much more ash content than that for which it was designed. Which of its following units needs major modifications Condenser. Ash handling unit. Pulversing unit. Cooling tower. Condenser. Ash handling unit. Pulversing unit. Cooling tower. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Skin effect depends on relative permeability frequency All of these conductivity relative permeability frequency All of these conductivity ANSWER DOWNLOAD EXAMIANS APP
Power Systems A generator has reactances of sub transient (X")= 0.5 pu, transient (X') = 0.8 pu and synchronous reactance (X) = 5 pu. The voltages at these reactances are 1.2 V, 1.1 V and 1 V respectively. Find the corresponding sub transient fault current in pu? 0.2 pu 3.975 pu 1.375 pu 2.4 pu 0.2 pu 3.975 pu 1.375 pu 2.4 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following relays are used in protection of medium transmission lines? any of the above Admittance relays Mho relays Impedance relays any of the above Admittance relays Mho relays Impedance relays ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line has 50 km operating at frequency of 500 Hz. Find the type of the line? medium transmission line long transmission line short transmission line any of the above medium transmission line long transmission line short transmission line any of the above ANSWER DOWNLOAD EXAMIANS APP
Power Systems On what factor does the performance of a circuit breaker depend? Both A and C. Critical length of breaking. Breaking speed. None of these. Both A and C. Critical length of breaking. Breaking speed. None of these. ANSWER DOWNLOAD EXAMIANS APP
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