Power Systems If a 500 MVA, 11 kV 3-phase generator at 50 Hz feeds through a transfer impedance of (0+j0.605) Ω/phase, an infinite voltage also at 11 kV, then the maximum steady state power transfer on the base of 500 MVA and 11 kV is 1 pu 0.5 pu 0.4 pu 0.8 pu 1 pu 0.5 pu 0.4 pu 0.8 pu ANSWER DOWNLOAD EXAMIANS APP
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 Charging current under no load? 0.512∠90° A/phase 1.144∠90° A/phase 0.144∠90° A/phase 0.344∠90° A/phase 0.512∠90° A/phase 1.144∠90° A/phase 0.144∠90° A/phase 0.344∠90° A/phase ANSWER DOWNLOAD EXAMIANS APP
Power Systems Keeping in view the cost and overall effectiveness, the following circuit breaker is suited for capacitor bank switching vacuum. oil. air blast. SF6. vacuum. oil. air blast. SF6. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A generator has a rating of 10 MVA, 5 kV has a reactance of 0.02 pu. Find the reactance at a new base values of 50 MVA, 10 kV? 0.05 0.25 0.02 0.025 0.05 0.25 0.02 0.025 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Bundled conductors are used for EHV transmission lines primarily for reducing the surge impedance of the line voltage drop across the line corona loss copper loss surge impedance of the line voltage drop across the line corona loss copper loss ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line has impedance of (0.005 + j0.05) pu. Find the line at which maximum value of negative DC off set current is produced, if it is applied with Vm cosωt? 9.68 4.68 msec 1.47 msec 2.63 msec 9.68 4.68 msec 1.47 msec 2.63 msec ANSWER DOWNLOAD EXAMIANS APP
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