Power Systems Which of the following decides the insulation level of 400 kV, EHV line? switching over voltage lighting voltage skin effect radio interference switching over voltage lighting voltage skin effect 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? 75% 86%% 90% 50% 75% 86%% 90% 50% ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following insulator is practically used for railway crossings? strain insulator string insulator pin insulator All of these strain insulator string insulator pin 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 increase the sag All of these reduce the tension reduce the vibrations at the point of support increase the sag All of these reduce the tension reduce the vibrations at the point of support ANSWER DOWNLOAD EXAMIANS APP
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