Power Systems The maximum efficiency of modern coal fired steam steam raising thermal power plants is restricted to about 0.35( a low value), mainly because of high energy loss in condenser low steam turbine mechanical efficiency high energy loss in boilers low alternator efficiency high energy loss in condenser low steam turbine mechanical efficiency high energy loss in boilers low alternator efficiency ANSWER DOWNLOAD EXAMIANS APP
Power Systems Communications lines are treated as medium transmission lines any of the above long transmission lines short transmission lines medium transmission lines any of the above long transmission lines short transmission lines ANSWER DOWNLOAD EXAMIANS APP
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% 50% 90% 86%% 75% 50% 90% 86%% ANSWER DOWNLOAD EXAMIANS APP
Power Systems A three phase, 33 kV oil circuit breaker is rated 1200 A, 2000 MVA, 3 secs. The symmetrical breaking current is 35 kA. 45 kA. 50 kA. 55 kA. 35 kA. 45 kA. 50 kA. 55 kA. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Equal area criteria is used for absolute stability of the system nether 1 nor 2 relative stability of the system either 1 or 2 absolute stability of the system nether 1 nor 2 relative stability of the system either 1 or 2 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? 85.5 95.5 105.2 102.5 85.5 95.5 105.2 102.5 ANSWER DOWNLOAD EXAMIANS APP
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