Power Systems Attenuation occurs due to resistance inductance conductance both 1 and 3 resistance inductance conductance both 1 and 3 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Lightning arresters are used to protect electrical equipment against over currents due to lightning stroke. direct strokes of lightning. over voltages due to indirect lightning stroke. power frequency of over voltages. over currents due to lightning stroke. direct strokes of lightning. over voltages due to indirect lightning stroke. power frequency of over voltages. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following faults is/are treated as external faults? Failure of prime mover of the generator Failure of excitation Over voltage All of these Failure of prime mover of the generator Failure of excitation Over voltage All of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of following power plants normally operage at high speeds Hydro electric. Thermal. Diesel engine. Petrol engine. Hydro electric. Thermal. Diesel engine. Petrol engine. 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? 86%% 90% 75% 50% 86%% 90% 75% 50% ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following produces the radio interference in communication lines? electro static induction both 1 and 2 None of these electro magnetic induction electro static induction both 1 and 2 None of these electro magnetic induction ANSWER DOWNLOAD EXAMIANS APP
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