Power Systems Taking the density of water to be 1000 kg/m³, how much power would be developed by a hydro electric generator unit, assume 100% efficiency, with 1 m head and 1 m³/s discharge? 19.60 kW 9.81 kW 2.90 kW 4.45 kW 19.60 kW 9.81 kW 2.90 kW 4.45 kW 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? -18.18 kV 18.18 kV 81.82 kV -81.82 kV -18.18 kV 18.18 kV 81.82 kV -81.82 kV ANSWER DOWNLOAD EXAMIANS APP
Power Systems The Gauss Seidel load flow method has following disadvantages. Which of the following statement is wrong? Unreliable convergence A good initial guess for voltages is essential for convergence Choice of slack bus affects the convergence Slow convergence Unreliable convergence A good initial guess for voltages is essential for convergence Choice of slack bus affects the convergence Slow convergence ANSWER DOWNLOAD EXAMIANS APP
Power Systems In a 3-phase, 5 kV, 5 MVA system, what is the base impedance? 500 ohms 50 ohms 5 ohms 0.5 ohm 500 ohms 50 ohms 5 ohms 0.5 ohm ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which type of connection is employed for current transformers for the protection of star- delta connected 3-phase transformer? delta-delta star-star star-delta delta-star delta-delta star-star star-delta delta-star ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following is/are the advantages of synchronous phase modifier over the shunt compensation? single unit can be used as both capacitance and inductor by adjusting the excitation initial cost is low smooth voltage regulation is possible by controlling excitation both 1 and 2 single unit can be used as both capacitance and inductor by adjusting the excitation initial cost is low smooth voltage regulation is possible by controlling excitation both 1 and 2 ANSWER DOWNLOAD EXAMIANS APP
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