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 0.344∠90° A/phase 0.144∠90° A/phase 0.512∠90° A/phase 1.144∠90° A/phase 0.344∠90° A/phase 0.144∠90° A/phase ANSWER DOWNLOAD EXAMIANS APP
Power Systems If skin depth is more, then skin effect is less more either 1 or 2 None of these less more either 1 or 2 None of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems IF the time of operation of a relay for unity TMS is 10 sec then the time of operation for 0.5 TMS is 10 sec. 5 sec. 20 sec. none of these. 10 sec. 5 sec. 20 sec. none of these. ANSWER DOWNLOAD EXAMIANS APP
Power Systems When reactance grounding is used in network, the voltage between neutral and ground is IN × Xn both 1 and 3 3×IR0 × Xn IR0 × Xn IN × Xn both 1 and 3 3×IR0 × Xn IR0 × Xn ANSWER DOWNLOAD EXAMIANS APP
Power Systems What is the approximate efficiency of a normal thermal power station? 60-70% 30-40% 20-25% 45-55% 60-70% 30-40% 20-25% 45-55% ANSWER DOWNLOAD EXAMIANS APP
Power Systems What should be the minimum depth (in metre)of cable trench to dug for laying of 1.1 kV? 0.90. 1.20. 0.75. 1.05. 0.90. 1.20. 0.75. 1.05. ANSWER DOWNLOAD EXAMIANS APP
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