Power Systems Which of the following decides the insulation level of 400 kV, EHV line? skin effect radio interference lighting voltage switching over voltage skin effect radio interference lighting voltage switching over voltage 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%% 50% 75% 90% 86%% 50% 75% 90% ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following insulator is practically used for railway crossings? strain insulator pin insulator string insulator All of these strain insulator pin insulator string insulator All of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following statements is/are true? By increasing of temperature, neither 1 nor 2 sag increase both 1 and 2 tension decrease neither 1 nor 2 sag increase both 1 and 2 tension decrease ANSWER DOWNLOAD EXAMIANS APP
Power Systems Stock bridge dampers are used to reduce the vibrations at the point of support reduce the tension increase the sag All of these reduce the vibrations at the point of support reduce the tension increase the sag All of these ANSWER DOWNLOAD EXAMIANS APP
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