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 400 Ω 210 Ω 420 Ω 840 Ω 400 Ω 210 Ω 420 Ω 840 Ω ANSWER DOWNLOAD EXAMIANS APP
Power Systems The value of inductance used for compensation of arcing grounds is 1/3ω²C ω²C/3 3ω²C 3/ω²C 1/3ω²C ω²C/3 3ω²C 3/ω²C ANSWER DOWNLOAD EXAMIANS APP
Power Systems If a fault occurs on any feeder, the fault current is none of these. much higher than with unsectional bus bar. equal to unsectional bus bar. much lower than with unsectional bus bar. none of these. much higher than with unsectional bus bar. equal to unsectional bus bar. much lower than with unsectional bus bar. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following relays are used in protection of medium transmission lines? Mho relays Admittance relays Impedance relays any of the above Mho relays Admittance relays Impedance relays any of the above ANSWER DOWNLOAD EXAMIANS APP
Power Systems The load current in short circuit calculations are neglected because both 1 and 2 nether 1 nor 2 short circuit currents are much larger than load currents short circuit currents are greatly out of phase with load currents both 1 and 2 nether 1 nor 2 short circuit currents are much larger than load currents short circuit currents are greatly out of phase with load currents ANSWER DOWNLOAD EXAMIANS APP
Power Systems Transmission lines are transposed to reduce skin effect proximity effect interference with neighbouring communication lines ferranti effect skin effect proximity effect interference with neighbouring communication lines ferranti effect ANSWER DOWNLOAD EXAMIANS APP
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