Power Systems If the fault current is 2000 A, the relay setting is 50% and CT ratio is 400 : 5, then plug setting multiplier will be 50. 15. 25. 10. 50. 15. 25. 10. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following statements is/are true? Corona is reduced by increasing the radius of the conductor All of these decreasing the supply frequency increasing the distance between the conductor increasing the radius of the conductor All of these decreasing the supply frequency increasing the distance between the conductor ANSWER DOWNLOAD EXAMIANS APP
Power Systems Load frequency control is achieved by properly matching the individual machines turbine inputs. generator ratings. generated voltages. reactive powers. turbine inputs. generator ratings. generated voltages. reactive powers. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Sum of the elements of row i equal to shunt admittances connected to bus i. If this summation is zero, indicates there is no both 1 and 2 shunt admittance mutual coupling None of these both 1 and 2 shunt admittance mutual coupling None of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems Where the voltage is high and current to be interrupted is low, Which of following the breaker is preferable? Any of these. Oil CB. Vacuum CB. Air blast CB. Any of these. Oil CB. Vacuum CB. Air blast CB. ANSWER DOWNLOAD EXAMIANS APP
Power Systems What is the approximate efficiency of a normal thermal power station? 45-55% 20-25% 30-40% 60-70% 45-55% 20-25% 30-40% 60-70% ANSWER DOWNLOAD EXAMIANS APP
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