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 %. 56 %. None of above 28 %. 14 %. 56 %. None of above 28 %. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line is compensated with shunt capacitance Csh. If the uncompensated transmission line surge impedance is Zs, then find the new surge impedance Zn after shunt compensation? Zs*√(1 + Kcsh) Zs/√(1 + Kcsh) All of these √(1 + Kcsh)/Zs Zs*√(1 + Kcsh) Zs/√(1 + Kcsh) All of these √(1 + Kcsh)/Zs ANSWER DOWNLOAD EXAMIANS APP
Power Systems The fact that current density is higher at the surface when compared to centre is known as skin effect carona All of these proximity effect skin effect carona All of these proximity effect ANSWER DOWNLOAD EXAMIANS APP
Power Systems The presence of earth in case of overhead lines decrease capacitance decrease inducatance increase capacitance increase inductance decrease capacitance decrease inducatance increase capacitance increase inductance ANSWER DOWNLOAD EXAMIANS APP
Power Systems Surge tank is kept very close to the pen stock generator spill way turbine pen stock generator spill way turbine ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following materials is/are used as moderators? beryllium heavy water graphite All of these beryllium heavy water graphite All of these ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS