Power Systems Condition for zero voltage regulation is cosφ = R/X cosφ = X/R tanφ = R/X tanφ = X/R cosφ = R/X cosφ = X/R tanφ = R/X tanφ = X/R ANSWER DOWNLOAD EXAMIANS APP
Power Systems For 800 MJ stored energy in the rotor at synchronous speed, what is the inertia constant H for a 50 Hz, four pole turbo generator rated 100 MVA, 11 kV? 2 MJ/MVA 4 MJ/MVA 6 MJ/MVA 8 MJ/MVA 2 MJ/MVA 4 MJ/MVA 6 MJ/MVA 8 MJ/MVA ANSWER DOWNLOAD EXAMIANS APP
Power Systems What type of back up protection is used for alternators? Mho relay. Buchholz relay. Impedance relay. IDMT relay. Mho relay. Buchholz relay. Impedance relay. IDMT relay. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Alternate formation and breakage of bubbles are called cavitations. All of these water hamming. surgfication. cavitations. All of these water hamming. surgfication. ANSWER DOWNLOAD EXAMIANS APP
Power Systems An over current relay, having a current setting of 125% connected to a supply circuit through a current transformer of ratio 500/5. The plug setting multiplier for a fault current of 5 kA is 6 2 5 8 6 2 5 8 ANSWER DOWNLOAD EXAMIANS APP
Power Systems An isolated synchronous generator with transient reactance equal to 0.1 pu on a 100 MVA base is connected to the high voltage bus through a step up transformer of reactance 0.1 pu on a 100 MVA base. The fault level at the bus is 200 MVA 100 MVA 400 MVA 500 MVA 200 MVA 100 MVA 400 MVA 500 MVA ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS