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? 0.344∠90° A/phase 1.144∠90° A/phase 0.512∠90° A/phase 0.144∠90° A/phase 0.344∠90° A/phase 1.144∠90° A/phase 0.512∠90° A/phase 0.144∠90° A/phase ANSWER DOWNLOAD EXAMIANS APP
Power Systems The skin effect shows that the distribution of AC current is uniform through the cross section of the conductor current density is more at the centre of the condutor current density is more at the surface of the condutor current density is lower at the surface of the condutor the distribution of AC current is uniform through the cross section of the conductor current density is more at the centre of the condutor current density is more at the surface of the condutor current density is lower at the surface of the condutor ANSWER DOWNLOAD EXAMIANS APP
Power Systems For a fixed value of complex power flow in a transmission line having a sending end voltage V, the real power loss will be proportional to V2. V. 1 / V2. 1 / V. V2. V. 1 / V2. 1 / V. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A hydro power plant of run off river type should be provided with pondage so that the firm capacity of plant is increased. kinetic energy of the running water is fully utilized. operating head is controlled. pressure inside the turbine casing remains. firm capacity of plant is increased. kinetic energy of the running water is fully utilized. operating head is controlled. pressure inside the turbine casing remains. ANSWER DOWNLOAD EXAMIANS APP
Power Systems One million cubic meters of water is stored in a reservoir feeding a water turbine. The density of water is 993 kg/m³. If the centre of mass of water is 50 meters above the turbine and losses are negligible, the energy produced by that volume of water is 130.2 MWhr 120 MWhr 140 MWhr 135.3 MWhr 130.2 MWhr 120 MWhr 140 MWhr 135.3 MWhr ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following contributes to the Rankine cycle efficiency improvement in a thermal power plant Use of high pressure. Use of steam for heating of boiler feed water. Reheat of steam an intermediate stages. All of these Use of high pressure. Use of steam for heating of boiler feed water. Reheat of steam an intermediate stages. All of these ANSWER DOWNLOAD EXAMIANS APP
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