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? 50% 90% 86%% 75% 50% 90% 86%% 75% ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of following statement are false A thermal reactor needs a moderator material. Nuclear power plants are used as peak load plants only. In a nuclear reactor, multiplication factor is kept almost equal to one. In nuclear power plants, chain reaction is controlled by cadmium rods. A thermal reactor needs a moderator material. Nuclear power plants are used as peak load plants only. In a nuclear reactor, multiplication factor is kept almost equal to one. In nuclear power plants, chain reaction is controlled by cadmium rods. ANSWER DOWNLOAD EXAMIANS APP
Power Systems In Francis turbine runner, the number blades is usually of the order of 12 - 14. 3 - 6. 16 - 24. 6 - 8. 12 - 14. 3 - 6. 16 - 24. 6 - 8. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line is compensated with shunt capacitance Csh. After shunt compensation surge impedance loading will increases decreases remains unaffected None of these increases decreases remains unaffected None of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems The positive, negative and zero sequence per unit impedance of two generators connected in parallel are X1 = 0.12 pu, X2 = 0.096 pu and X0 = 0.036 pu. For LG fault at generator terminals (with 1 pu voltage) the positive sequence current will be 7.936 pu 8.936 pu 9.936 pu 10.936 pu 7.936 pu 8.936 pu 9.936 pu 10.936 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems The incremental fuel costs for two generating units G1 and G2 are given by Ic1 = 25 + 0.2 PG1 and Ic2 = 32 + 0.2 PG2, where PG1 and PG2 are real powers generated by the units. The economic allocation for a total load of 250 MW, neglecting transmission loss, is given by PG1 = 142.5 MW and PG2 = 107.5 MW PG1 = 125 MW and PG2 = 125 MW PG1 = 100 MW and PG2 = 150 MW PG1 = 109.75 MW and PG2 = 140.25 MW PG1 = 142.5 MW and PG2 = 107.5 MW PG1 = 125 MW and PG2 = 125 MW PG1 = 100 MW and PG2 = 150 MW PG1 = 109.75 MW and PG2 = 140.25 MW ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS