Power Systems Which of the following is/are the advantages of synchronous phase modifier over the shunt compensation? smooth voltage regulation is possible by controlling excitation single unit can be used as both capacitance and inductor by adjusting the excitation initial cost is low both 1 and 2 smooth voltage regulation is possible by controlling excitation single unit can be used as both capacitance and inductor by adjusting the excitation initial cost is low both 1 and 2 ANSWER DOWNLOAD EXAMIANS APP
Power Systems The water from a catchment is 60*106 cu m annually and hydro station has head of 40 m. Assuming ideal generator and turbine, the power that can be theoretically generated is 500 kW 250 kW 750 kW 300 kW 500 kW 250 kW 750 kW 300 kW ANSWER DOWNLOAD EXAMIANS APP
Power Systems The neutral of 10 MVA, 11 kV alternator is earthed through a resistance of 5 ohms. The fault ready is set to operate at 0.75 A. The current transformers have a ratio of 1000/5. What is the percentage of the alternator winding is protected? 85% 11.8% 15% 88.2% 85% 11.8% 15% 88.2% ANSWER DOWNLOAD EXAMIANS APP
Power Systems The value of inductance used for compensation of arcing grounds is 1/3ω²C 3ω²C 3/ω²C ω²C/3 1/3ω²C 3ω²C 3/ω²C ω²C/3 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Pipes carrying steam are generally of cobalt. cast iron. aluminium. steel. cobalt. cast iron. aluminium. steel. 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 2 10 16 6 2 10 16 6 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS