Power Systems The voltage and current instantaneous values are given as 5 sin (ωt + 30°) pu and 2 sin (ωt - 15°) pu respectively. Find the per unit active power? 7 pu 5.353 pu 5 pu 3.535 pu 7 pu 5.353 pu 5 pu 3.535 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems For a 500 Hz frequency excitation, a 100 km long power line will be modelled as any of the above shunt capacitor long transmission line medium transmission line any of the above shunt capacitor long transmission line medium transmission line ANSWER DOWNLOAD EXAMIANS APP
Power Systems What is the approximate efficiency of a normal thermal power station? 60-70% 45-55% 20-25% 30-40% 60-70% 45-55% 20-25% 30-40% ANSWER DOWNLOAD EXAMIANS APP
Power Systems Isolator in sub station is open under ------------- condition? full load any of the above short circuit no load full load any of the above short circuit no load ANSWER DOWNLOAD EXAMIANS APP
Power Systems Reheat cycle in thermal power plant is used to improve condenser performance. reduce loss of heat. increase thermal efficiency. utilize heat of flue gases. improve condenser performance. reduce loss of heat. increase thermal efficiency. utilize heat of flue gases. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A sodium graphite reactors use sodium as moderator and graphite as coolant. a mixture of sodium and graphite as moderator. a mixture of sodium and graphite as coolant. sodium as coolant and graphite as moderator. sodium as moderator and graphite as coolant. a mixture of sodium and graphite as moderator. a mixture of sodium and graphite as coolant. sodium as coolant and graphite as moderator. ANSWER DOWNLOAD EXAMIANS APP
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