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? 86%% 90% 50% 75% 86%% 90% 50% 75% ANSWER DOWNLOAD EXAMIANS APP
Power Systems The per unit impedance of a circuit element is 0.30. If the base kV and base MVA are halved, then the new value of the per unit impedance of the circuit element will be 0.30 0.0060 0.0030 0.60 0.30 0.0060 0.0030 0.60 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Reflector nuclear reactor are made of beryllium. steel. cast iron. boron. beryllium. steel. cast iron. boron. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The ratio of reset to pick up current for an induction cup relay is approximately 0.75. 0.99. 1.35. 1.0. 0.75. 0.99. 1.35. 1.0. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 100 Km long transmission line is loaded at 110 kV. If the loss of line is 5 MW and the load is 150 VA the resistance of the line is 8.06 Ω / phase. 2.26 Ω / phase. 6.06 Ω / phase. 4.65 Ω / phase. 8.06 Ω / phase. 2.26 Ω / phase. 6.06 Ω / phase. 4.65 Ω / phase. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Offset mho relay is used for the protection of equipment when None of these loss of excitation of the generator either 1 or 2 failure of prime mover of the generator None of these loss of excitation of the generator either 1 or 2 failure of prime mover of the generator ANSWER DOWNLOAD EXAMIANS APP
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