Power Systems Buchholz relay is used for protection of transformer. bus bar. alternator. none of these. transformer. bus bar. alternator. none of these. ANSWER DOWNLOAD EXAMIANS APP
Power Systems In a nuclear reator thermal energy is obtained from fission of radioactive material. burning of fuel rods in oxygen. all of above. fusion of radioactive material. fission of radioactive material. burning of fuel rods in oxygen. all of above. fusion of radioactive material. ANSWER DOWNLOAD EXAMIANS APP
Power Systems If we increase the length of the transmission line, the charging current remains unaffected None of these decreases increases remains unaffected None of these decreases increases 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? 50% 90% 75% 86%% 50% 90% 75% 86%% ANSWER DOWNLOAD EXAMIANS APP
Power Systems The total number of strands(N) is concentrically stranded cable with total annular space filled with strands of uniform diameter is given by (if x is number of layers) N = 3x²-6x+1 N = 3x²+3x+1 N = 3x²-3x+1 N = 3x²-2x+1 N = 3x²-6x+1 N = 3x²+3x+1 N = 3x²-3x+1 N = 3x²-2x+1 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Surge impedance loading can be increased by increasing of inductance value increasing of voltage level both 1 and 2 increasing of capacitance value increasing of inductance value increasing of voltage level both 1 and 2 increasing of capacitance value ANSWER DOWNLOAD EXAMIANS APP
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