Power Systems Find the number of insulator discs required in string insulator, if operating voltage is 220 kV and maximum voltage of each disc is 11 kV? 13 20 10 21 13 20 10 21 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following statements is true? Corona loss increases with decrease in conductor size and increase in supply frequency increase in conductor size and increase in supply frequency decrease in conductor size and decrease in supply frequency increase in conductor size and decrease in supply frequency decrease in conductor size and increase in supply frequency increase in conductor size and increase in supply frequency decrease in conductor size and decrease in supply frequency increase in conductor size and decrease in supply frequency ANSWER DOWNLOAD EXAMIANS APP
Power Systems Under over excitation synchronous phase modifier works as series capacitor shunt reactor any of the above shunt capacitor series capacitor shunt reactor any of the above shunt capacitor ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line has 50 km operating at frequency of 500 Hz. Find the type of the line? any of the above short transmission line medium transmission line long transmission line any of the above short transmission line medium transmission line long transmission line ANSWER DOWNLOAD EXAMIANS APP
Power Systems The factor affecting run off are all of above. amount of vegetation and weather condition in the catchment area. the topography and nature of soil in the catchment area. rain fall pattern, shape and size of catchment area. all of above. amount of vegetation and weather condition in the catchment area. the topography and nature of soil in the catchment area. rain fall pattern, shape and size of catchment area. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 3-phase, 110 kV coaxial XLPE insulated power cable delivering power at 50 Hz, has a capacitance of 125 nF/km. If the dielectric loss tangent of XLPE is 2*10^-4, then dielcetric power loss in this cable in W/km/phase is 23.9 31.7 35.45 38.6 23.9 31.7 35.45 38.6 ANSWER DOWNLOAD EXAMIANS APP
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