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. 14 %. 28 %. None of above 56 %. 14 %. 28 %. None of above 56 %. ANSWER DOWNLOAD EXAMIANS APP
Power Systems If the frequency is increased, then skin effect will any of the above increases remains unaffected decreases any of the above increases remains unaffected decreases ANSWER DOWNLOAD EXAMIANS APP
Power Systems A string insulator has 4 units. The voltage across bottom most unit is 10 kV and its efficiency is 90%. Find the total operating phase voltage? 36 kV 45 kV 40 kV 32 kV 36 kV 45 kV 40 kV 32 kV ANSWER DOWNLOAD EXAMIANS APP
Power Systems For which one of the following types of motors, is the equal area criterion for stability applicable? Three phase induction motor DC series motor DC shunt motor Three phase synchronous motor Three phase induction motor DC series motor DC shunt motor Three phase synchronous motor ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following is an impulse turbine None of above. Francis turbine. Pelton turbine. Kaplan turbine. None of above. Francis turbine. Pelton turbine. Kaplan turbine. ANSWER DOWNLOAD EXAMIANS APP
Power Systems High capacity generators and motors are of any of the above star connected with grounding network star connected network delta connected network any of the above star connected with grounding network star connected network delta connected network ANSWER DOWNLOAD EXAMIANS APP
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