Power Systems A 3 - Φ, 33 kV oil circuit breaker is rated 1200 A, 2000 MVA, 3 s. The symmetrical breaking current is 104.8 kA. 1200 A. 35 kA. 3600 A. 104.8 kA. 1200 A. 35 kA. 3600 A. ANSWER DOWNLOAD EXAMIANS APP
Power Systems By using guard ring in a transmission line, its string efficiency decrease remains unaffected None of these increase decrease remains unaffected None of these increase ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following is/are the stator faults? failure of excitation over current Inter phase faults All of these failure of excitation over current Inter phase faults All of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems The time taken by the turbine to fall to 0 rpm speed from 3000 rpm is called stopping time. coasting time. settling time. damping time. stopping time. coasting time. settling time. damping time. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line has an impedance of (2+j6) Ω has voltage regulation of 10% at a load power factor of 0.8 lag. Find the voltage regulation for a load of 0.6 lead 6.92% -6.92% 10% -10% 6.92% -6.92% 10% -10% ANSWER DOWNLOAD EXAMIANS APP
Power Systems Load frequency control is achieved by properly matching the individual machines reactive powers. turbine inputs. generated voltages. generator ratings. reactive powers. turbine inputs. generated voltages. generator ratings. ANSWER DOWNLOAD EXAMIANS APP
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