Power Systems A 1-phase transmission line has an impedance (4 + 3j ) Ω. Find the power factor of the load for zero voltage regulation? 0.6 lag 0.8 lag 0.6 lead 0.8 lead 0.6 lag 0.8 lag 0.6 lead 0.8 lead ANSWER DOWNLOAD EXAMIANS APP
Power Systems Critical visual voltage is the voltage at which corona is visible with blue or violet colour None of these corona is just initiated both 1 and 2 corona is visible with blue or violet colour None of these corona is just initiated both 1 and 2 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following statements is true? Corona loss increases with increase in conductor size and decrease in supply frequency decrease in conductor size and increase in supply frequency decrease in conductor size and decrease in supply frequency increase in conductor size and increase in supply frequency increase in conductor size and decrease in supply frequency decrease in conductor size and increase in supply frequency decrease in conductor size and decrease in supply frequency increase in conductor size and increase in supply frequency ANSWER DOWNLOAD EXAMIANS APP
Power Systems Plug setting of a relay can be altered by varying none of these. adjustable back up stop. no. of ampere-turns. air gap of magnetic path. none of these. adjustable back up stop. no. of ampere-turns. air gap of magnetic path. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The neutral of 10 MVA, 11 kV alternator is earthed through a resistance of 5 ohms. The fault ready is set to operate at 0.75 A. The current transformers have a ratio of 1000/5. What is the percentage of the alternator winding is protected? 11.8% 88.2% 15% 85% 11.8% 88.2% 15% 85% ANSWER DOWNLOAD EXAMIANS APP
Power Systems Peterson coil is used in case of transmission line for reduce ferranti effect increase the voltage level improve power factor compensation of arcing grounds reduce ferranti effect increase the voltage level improve power factor compensation of arcing grounds ANSWER DOWNLOAD EXAMIANS APP
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