Power Systems A 25 MVA, 11 kV alternator is supplying full load at a point of 0.75 lagging. Determine the percentage increase in earning capacity when it is operated at improved power factor of 0.96 lagging. 28 %. 14 %. None of above 56 %. 28 %. 14 %. None of above 56 %. ANSWER DOWNLOAD EXAMIANS APP
Power Systems In thermal plant most of the energy is wasted in boiler turbines ESP condenser boiler turbines ESP condenser ANSWER DOWNLOAD EXAMIANS APP
Power Systems The daily energy produced in thermal power station is 720 MWh at a load factor of 0.6. What is the maximum demand of the station? 50 MW 72 MW 30 MW 720 MW 50 MW 72 MW 30 MW 720 MW ANSWER DOWNLOAD EXAMIANS APP
Power Systems A cable has inductance of 0.22 mH per km and capacitance of 0.202 µF per km. The surge impedance of the cable is 33 Ω 40 Ω 52 Ω 28 Ω 33 Ω 40 Ω 52 Ω 28 Ω ANSWER DOWNLOAD EXAMIANS APP
Power Systems The time taken by the turbine to fall to 0 rpm speed from 3000 rpm is called stopping time. damping time. coasting time. settling time. stopping time. damping time. coasting time. settling time. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The sequence components of the fault current are as follows : Ipositive = j1.5 pu, Inegative = − j0.5 pu, Izero = − j pu Which fault is this? LLLG. LL. LG. LLG. LLLG. LL. LG. LLG. ANSWER DOWNLOAD EXAMIANS APP
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