Power Systems Which of the following is/are the stator faults? All of these Inter phase faults failure of excitation over current All of these Inter phase faults failure of excitation over current ANSWER DOWNLOAD EXAMIANS APP
Power Systems Binary vapor cycle are used for improving the plant efficiency. improving the condenser performance. All of these increasing the turbine efficiency. improving the plant efficiency. improving the condenser performance. All of these increasing the turbine efficiency. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A string insulator has 4 units. The voltage across the bottom most unit is 33.33% of total voltage. Its string efficiency is 33.33% 75% 25% 66.66% 33.33% 75% 25% 66.66% ANSWER DOWNLOAD EXAMIANS APP
Power Systems The insulation of modern EHV is designed based on switching voltage. RI. corona. lightning voltage. switching voltage. RI. corona. lightning voltage. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The arc voltage produced in an AC circuit breaker is always leading the arc current by 90°. lagging the arc current by 90°. in phase opposition with the arc current. in phase with the arc current. leading the arc current by 90°. lagging the arc current by 90°. in phase opposition with the arc current. in phase with the arc current. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 100 MVA alternator operating at full load at 50 Hz. H = 4 MWsec/MVA, Td = 0.5 sec. One of the transmission line is tripped. So that output of generator is reduced to 70 MW. Find the frequency deviation during this time? -0.92 0.92 0.56 -0.56 -0.92 0.92 0.56 -0.56 ANSWER DOWNLOAD EXAMIANS APP
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