Power Systems Skin effect depends on frequency relative permeability conductivity All of these frequency relative permeability conductivity All of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems To reduce the radio interference which line is/are transposed? either 1 or 2 Power line Both power and telecommunication lines None of these either 1 or 2 Power line Both power and telecommunication lines None of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems A hydraulic turbine having rated speed of 250 rpm is connected to a synchronous generator. In order to produce power at 50 Hz, the numbers of pole are required in the generator 16. 12. 6. 24. 16. 12. 6. 24. 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 0.89 1.13 1.25 1 0.89 1.13 1.25 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following power stations is mainly used to cover peak load on the system? coal based thermal power plant pumped storage hydro power plant nuclear plant gas based thermal power plant coal based thermal power plant pumped storage hydro power plant nuclear plant gas based thermal power plant ANSWER DOWNLOAD EXAMIANS APP
Power Systems What is the approximate efficiency of a normal thermal power station? 30-40% 60-70% 20-25% 45-55% 30-40% 60-70% 20-25% 45-55% ANSWER DOWNLOAD EXAMIANS APP
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