Power Systems Two insulator discs of identical capacitance value C make up a string for a 22 kV, 50 Hz, single phase overhead line insulation system. If pin to earth capacitance is also C, then find the string efficiency? 75% 86%% 50% 90% 75% 86%% 50% 90% ANSWER DOWNLOAD EXAMIANS APP
Power Systems Area under the daily curve divided by 24 gives maximum load average load units generated maximum demand maximum load average load units generated maximum demand ANSWER DOWNLOAD EXAMIANS APP
Power Systems For large plants of capacity for more than 15 MW, what type of cooling is used Water. Hydrogen. Air. Liquid. Water. Hydrogen. Air. Liquid. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Two generating stations delivering a powers of P1 = 150 MW, P2 =100 MW and the B coefficients are B11 = 0.005, B22 = 0.002, B12=B21= -0.001. Find the transmission line losses? 102.5 95.5 85.5 105.2 102.5 95.5 85.5 105.2 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Reactance relays are used for the protection of short transmission lines only long transmission lines only medium transmission lines only All of these short transmission lines only long transmission lines only medium transmission lines only All of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following is/are the methods of improving transient stability? Fast acting governing system Fast acting excitation control All of these Dynamic breaking Fast acting governing system Fast acting excitation control All of these Dynamic breaking ANSWER DOWNLOAD EXAMIANS APP