Power Systems Power transmission lines are transposed to reduce ferranti effect skin effect proximity effect radio interference ferranti effect skin effect proximity effect radio interference ANSWER DOWNLOAD EXAMIANS APP
Power Systems A pin type insulator has 100 kV puncture voltage. If 10 kV flash over voltage occurred in a transmission line, then find the safety factor of insulator? 10 1000 0.001 0.1 10 1000 0.001 0.1 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Recovery voltage in CB is equal to normal frequency 50 Hz rms voltage. arcing period voltage. none of these. transient voltage. normal frequency 50 Hz rms voltage. arcing period voltage. none of these. transient voltage. ANSWER DOWNLOAD EXAMIANS APP
Power Systems NTPC (National Thermal Power Cooperation) has its only thermal power generating unit in West Bengal at Bakreshwar. Durgapur. Farakka. Katwa. Bakreshwar. Durgapur. Farakka. Katwa. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The maximum efficiency of modern coal fired steam steam raising thermal power plants is restricted to about 0.35( a low value), mainly because of high energy loss in condenser high energy loss in boilers low steam turbine mechanical efficiency low alternator efficiency high energy loss in condenser high energy loss in boilers low steam turbine mechanical efficiency low alternator efficiency ANSWER DOWNLOAD EXAMIANS APP
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 21 20 10 13 21 20 10 ANSWER DOWNLOAD EXAMIANS APP
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