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