Power Systems A 10 MVA generator has reactance of 0.2 pu. Find the new reactance value for 50 MVA base? 0.25 pu 0.2 pu 5 pu 1 pu 0.25 pu 0.2 pu 5 pu 1 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems To protect the power transformer ( Y-Y with neutral grounded) against fault, which type of connection do the current transformers have? Δ-Y connection Y-Y connection Y-Δ connection Δ-Δ connection Δ-Y connection Y-Y connection Y-Δ connection Δ-Δ connection ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 50 Hz, 17.32 kV generator is connected to a power system. The system reactance and capacitance per phase are 10 mH and 0.2 mF respectively. What is the maximum voltage across the contacts of the circuit breaker at an instant when it passes through zero? 31.28 kV 29.28 kV 28.28 kV 30.28 kV 31.28 kV 29.28 kV 28.28 kV 30.28 kV ANSWER DOWNLOAD EXAMIANS APP
Power Systems A cable has inductance of 0.22 mH per km and capacitance of 0.202 µF per km. The surge impedance of the cable is 28 Ω 40 Ω 52 Ω 33 Ω 28 Ω 40 Ω 52 Ω 33 Ω ANSWER DOWNLOAD EXAMIANS APP
Power Systems Storage requirement can be determined from both B and C. mass Curve. flow duration curve. hydro-graph. both B and C. mass Curve. flow duration curve. hydro-graph. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The rate of rise of restricting voltage depends upon the Capacitance of the system. Inductance and capacitance of the system. Inductance of the system. Type of CB. Capacitance of the system. Inductance and capacitance of the system. Inductance of the system. Type of CB. ANSWER DOWNLOAD EXAMIANS APP
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