Power Systems The insulation resistance of the 20 km long underground cable is 8 MΩ. Other things being same, the insulation resistance of 10 km long cable will be 16 MΩ 8 MΩ 32 MΩ 4 MΩ 16 MΩ 8 MΩ 32 MΩ 4 MΩ ANSWER DOWNLOAD EXAMIANS APP
Power Systems The rate of rise of re-striking voltage is dependent upon capacitance of the system only resistance of the system only inductance of the system only both 1 and 2 capacitance of the system only resistance of the system only inductance of the system only both 1 and 2 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 If the time of operation of a relay for unity TMS is 10 sec. the time of operation of 0.5 TMS will be _______________ secs. 5. 20. 3. 7. 5. 20. 3. 7. ANSWER DOWNLOAD EXAMIANS APP
Power Systems On what factors does the selection of a water turbine depend Nature of load. All of above. Working head. Speed. Nature of load. All of above. Working head. Speed. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following statements is/are true regarding HVDC? Corona loss is very much reduced in the dc line HVDC can utilize earth for its return path All of these There is no skin effect in dc line Corona loss is very much reduced in the dc line HVDC can utilize earth for its return path All of these There is no skin effect in dc line ANSWER DOWNLOAD EXAMIANS APP
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