Power Systems A transmission line has (2 + j4)Ω impedance, 100 MVA and base voltage is 10 KV. Find the per unit impedance value of transmission line? (4 + j8 ) pu (2 + j4 ) pu (0.5 + j1 ) pu (1 + j2 ) pu (4 + j8 ) pu (2 + j4 ) pu (0.5 + j1 ) pu (1 + j2 ) pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems The most suitable circuit breaker for short line fault without switching resistor is none of these. SF6 breaker. air blast circuit breaker. oil circuit breaker. none of these. SF6 breaker. air blast circuit breaker. oil circuit breaker. 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 28.28 kV 29.28 kV 30.28 kV 31.28 kV 28.28 kV 29.28 kV 30.28 kV ANSWER DOWNLOAD EXAMIANS APP
Power Systems Uses of diesel power stations peak load plant. standby plants. All of these emergency plants. peak load plant. standby plants. All of these emergency plants. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Power transmission lines are transposed to reduce radio interference ferranti effect proximity effect skin effect radio interference ferranti effect proximity effect skin effect ANSWER DOWNLOAD EXAMIANS APP
Power Systems The generating station suitable to operate as peak load plant is Thermal power station. Power station. Pumped storage. Nuclear power station. Thermal power station. Power station. Pumped storage. Nuclear power station. ANSWER DOWNLOAD EXAMIANS APP
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