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 There is no skin effect in dc line All of these Corona loss is very much reduced in the dc line HVDC can utilize earth for its return path There is no skin effect in dc line All of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 200 MVA alternator operated at no load at frequency of 50 Hz, it has inertia constant of 5 MWsec/MVA and governing system has a time delay of 0.6 sec. If the load of 50 MW is suddenly applied then find the frequency deviation during this time? 0.76 Hz 0.85 Hz -0.85 Hz -0.76 Hz 0.76 Hz 0.85 Hz -0.85 Hz -0.76 Hz ANSWER DOWNLOAD EXAMIANS APP
Power Systems If the penalty factor of a plant is unity, its incremental transmission loss is 0 1 None of these -1 0 1 None of these -1 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Plant capacity factor value is less than 1 greater than 1 1 0 less than 1 greater than 1 1 0 ANSWER DOWNLOAD EXAMIANS APP
Power Systems The pickup value of relay is 6.5 Amp and fault current in relay coil is 39 Amp. Its plug setting multiplier is 7 A. 6 A. 10 A. 8 A. 7 A. 6 A. 10 A. 8 A. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The corona loss on a particular system at 50 Hz is 1 kW/km per phase. What is the corona loss at 60 Hz in kW/km per phase? 1.25 1.13 1 0.89 1.25 1.13 1 0.89 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS