Power Systems In a three-phase system, when the loads are perfectly balanced, the neutral current is zero. one - third of maximum. one - third of minimum. two - thirds of maximum. zero. one - third of maximum. one - third of minimum. two - thirds of maximum. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Proximity effect is more in case of over head lines power cables None of these same in both cases over head lines power cables None of these same in both cases ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line has a surge impedance of 400 Ω is connected with the cable having surge impedance of 40 Ω, a surge magnitude of 100 kV is travelling from the transmission line towards the cable. Find the reflected voltage? 81.82 kV -81.82 kV 18.18 kV -18.18 kV 81.82 kV -81.82 kV 18.18 kV -18.18 kV ANSWER DOWNLOAD EXAMIANS APP
Power Systems Nuclear reactors usually employ fusion. fission. both of A and B. none of above. fusion. fission. both of A and B. none of above. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The water from a catchment is 60*106 cu m annually and hydro station has head of 40 m. Assuming ideal generator and turbine, the power that can be theoretically generated is 500 kW 750 kW 250 kW 300 kW 500 kW 750 kW 250 kW 300 kW ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following represents the transmission or reflection coefficient of voltage Tv? (Zl = Surge impedance of load, Zs = Surge impedance of line) 2Zs/(Zs + Zl) (Zs - Zl)/(Zs + Zl) (Zl - Zs)/(Zs + Zl) 2Zl/(Zs + Zl) 2Zs/(Zs + Zl) (Zs - Zl)/(Zs + Zl) (Zl - Zs)/(Zs + Zl) 2Zl/(Zs + Zl) ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS