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