Power Systems A 3-phase transmission line operating at Vs = 400 kV and has ABCD parameters A= D = 0.8∠0°, B = 100∠90° Ω, C = 0.5*10-6∠90° ℧. Find the no load receiving end voltage? 500 kV 320 kv 600 kV 400 kV 500 kV 320 kv 600 kV 400 kV ANSWER DOWNLOAD EXAMIANS APP
Power Systems Surge impedance loading of a line is increased by which of the following compensation methods? series capacitor both 1 and 2 shunt reactor shunt capacitor series capacitor both 1 and 2 shunt reactor shunt capacitor ANSWER DOWNLOAD EXAMIANS APP
Power Systems An over current relay, having a current setting of 125% connected to a supply circuit through a current transformer of ratio 500/5. The plug setting multiplier for a fault current of 5 kA is 8 5 6 2 8 5 6 2 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following transformer is used in sub station for operating a protective relay? distribution transformer All of these capacitor voltage transformer auto transformer distribution transformer All of these capacitor voltage transformer auto transformer ANSWER DOWNLOAD EXAMIANS APP
Power Systems If the rated receiving end voltage is 33 kV, then what are the limits for safe operation of equipments? 25 to 35 kV 33 to 50 kV any voltage above 33 kV 31.35 to 34.65 kV 25 to 35 kV 33 to 50 kV any voltage above 33 kV 31.35 to 34.65 kV ANSWER DOWNLOAD EXAMIANS APP
Power Systems Reflection coefficient of voltage is Rv (Zs - Zl)/(Zs + Zl) 2Zl/(Zs + Zl) (Zl - Zs)/(Zs + Zl) 2Zs/(Zs + Zl) (Zs - Zl)/(Zs + Zl) 2Zl/(Zs + Zl) (Zl - Zs)/(Zs + Zl) 2Zs/(Zs + Zl) ANSWER DOWNLOAD EXAMIANS APP
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