Power Systems Condition for maximum voltage regulation cosφ = X/R cosφ = R/X tanφ = R/X tanφ = X/R cosφ = X/R cosφ = R/X tanφ = R/X tanφ = X/R ANSWER DOWNLOAD EXAMIANS APP
Power Systems The most suitable circuit breaker for short line fault without switching resistor is oil circuit breaker. SF6 breaker. air blast circuit breaker. none of these. oil circuit breaker. SF6 breaker. air blast circuit breaker. none of these. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Load frequency control is achieved by properly matching the individual machines reactive powers. turbine inputs. generator ratings. generated voltages. reactive powers. turbine inputs. generator ratings. generated voltages. 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 400/5. The pick up value is 10 A 15 A 12.5 A 6.25 A 10 A 15 A 12.5 A 6.25 A ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following statements is/are true? By increasing of temperature, sag increase neither 1 nor 2 both 1 and 2 tension decrease sag increase neither 1 nor 2 both 1 and 2 tension decrease ANSWER DOWNLOAD EXAMIANS APP
Power Systems The inertia constant of 100 MVA, 50 Hz, 4 pole generator is 10 MJ/MVA. If the mechanical input to the machine is suddenly raised from 50 MW to 75 MW, the rotor acceleration will be equal to 225 electrical degrees/s² 125 electrical degrees/s² 12.5 electrical degrees/s² 22.5 electrical degrees/s² 225 electrical degrees/s² 125 electrical degrees/s² 12.5 electrical degrees/s² 22.5 electrical degrees/s² ANSWER DOWNLOAD EXAMIANS APP
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