Power Systems The surge impedance of a 400 km long overhead transmission line is 420 Ω. For a 200 km length of the same line, the surge impedance will be 420 Ω 400 Ω 210 Ω 840 Ω 420 Ω 400 Ω 210 Ω 840 Ω ANSWER DOWNLOAD EXAMIANS APP
Power Systems Operating cost of thermal power station is less than that of nuclear power plant. less than that of hydroelectric power plant. is the same as that of nuclear power plant. less than that of diesel power plant. less than that of nuclear power plant. less than that of hydroelectric power plant. is the same as that of nuclear power plant. less than that of diesel power plant. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Demand factor of a plant is 0 1 greater than 1 less than 1 0 1 greater than 1 less than 1 ANSWER DOWNLOAD EXAMIANS APP
Power Systems The insulation of the modern EHV lines is designed based on the switch voltage. corona. the lighting voltage. R × I. the switch voltage. corona. the lighting voltage. R × I. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Peterson coil is used in case of transmission line for increase the voltage level compensation of arcing grounds improve power factor reduce ferranti effect increase the voltage level compensation of arcing grounds improve power factor reduce ferranti effect 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? 0.001 10 0.1 1000 0.001 10 0.1 1000 ANSWER DOWNLOAD EXAMIANS APP
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