Power Systems The corona loss on a particular system at 60 Hz is 1 kW/km per phase. What is the corona loss at 50 Hz in kW/km per phase? 1.13 0.93 0.882 1 1.13 0.93 0.882 1 ANSWER DOWNLOAD EXAMIANS APP
Power Systems The line currents of 3-phase supply are: IR = 3 + j 5 A IY =2 + j 2 A IB = -2 - j 1 A The zero sequence current will be 5 + j 7 A -2 - j 1 A 1 + j 2 A 1 + j 4 A 5 + j 7 A -2 - j 1 A 1 + j 2 A 1 + j 4 A ANSWER DOWNLOAD EXAMIANS APP
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 420 Ω 210 Ω 840 Ω 400 Ω 420 Ω 210 Ω 840 Ω ANSWER DOWNLOAD EXAMIANS APP
Power Systems A thermal protection relay provides protection against what? Short circuit Temperature any of the above Over load Short circuit Temperature any of the above Over load ANSWER DOWNLOAD EXAMIANS APP
Power Systems Find the surge impedance of a line when inductance is 160 mH and capacitance is 1µF? 400 Ω 160 Ω 800 Ω 200 Ω 400 Ω 160 Ω 800 Ω 200 Ω ANSWER DOWNLOAD EXAMIANS APP
Power Systems In load flow studies PV bus is treated as PQ bus when voltage at the bus become high reactive power goes beyond limit phase angle become high any of the above voltage at the bus become high reactive power goes beyond limit phase angle become high any of the above ANSWER DOWNLOAD EXAMIANS APP
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