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? 50% 90% 75% 86%% 50% 90% 75% 86%% ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following insulator is practically used for railway crossings? string insulator All of these strain insulator pin insulator string insulator All of these strain insulator pin insulator ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following statements is/are true? By increasing of temperature, both 1 and 2 tension decrease neither 1 nor 2 sag increase both 1 and 2 tension decrease neither 1 nor 2 sag increase ANSWER DOWNLOAD EXAMIANS APP
Power Systems Stock bridge dampers are used to reduce the vibrations at the point of support All of these reduce the tension increase the sag reduce the vibrations at the point of support All of these reduce the tension increase the sag ANSWER DOWNLOAD EXAMIANS APP
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