Power Systems Transmission lines are transposed to reduce ferranti effect interference with neighbouring communication lines skin effect proximity effect ferranti effect interference with neighbouring communication lines skin effect proximity effect ANSWER DOWNLOAD EXAMIANS APP
Power Systems A coal fired steam power station working at a plant factor of 80% has one 500 MW generating unit. If the heat content of coal is 2 kWh/kg, the overall plant efficiency is 40% and a train load of coal is 2000 metric tons, then the number of trains required daily for the plant is 10 6 16 2 10 6 16 2 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following statements is/are true? Corona is reduced by increasing the distance between the conductor All of these increasing the radius of the conductor decreasing the supply frequency increasing the distance between the conductor All of these increasing the radius of the conductor decreasing the supply frequency ANSWER DOWNLOAD EXAMIANS APP
Power Systems A power station has a maximum demand of 15000 kW. The annual load factor is 50% and plant capacity factor is 40%. What is the reserve capacity of the plant? 3750 kW 7500 kW 6000 kW 3000 kW 3750 kW 7500 kW 6000 kW 3000 kW ANSWER DOWNLOAD EXAMIANS APP
Power Systems If R = 84 ohm/Km, G = 10-6 mho/Km, H = 0.01 H/Km, C = 0.061 μ F/Km and frequency = 1000 Hz, then what is the value of propagation constant of the transmission line 0.018 per Km. 0.09 + j 0.018 per Km. None of them. 0.01 + j 0.02 per Km. 0.018 per Km. 0.09 + j 0.018 per Km. None of them. 0.01 + j 0.02 per Km. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following is a reaction turbines Kaplan and Pelton turbine. Francis turbine and Kaplan turbine. Pelton turbine and Francis turbine. None of these. Kaplan and Pelton turbine. Francis turbine and Kaplan turbine. Pelton turbine and Francis turbine. None of these. ANSWER DOWNLOAD EXAMIANS APP
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