Power Systems The rate of rise of re-striking voltage is dependent upon resistance of the system only capacitance of the system only both 1 and 2 inductance of the system only resistance of the system only capacitance of the system only both 1 and 2 inductance of the system only ANSWER DOWNLOAD EXAMIANS APP
Power Systems Two insulator discs of identical capacitance value C make up a string for a 22 kV, 50 Hz, single phase overhead line insulation system. If pin to earth capacitance is also C, then find the string efficiency? 75% 90% 86%% 50% 75% 90% 86%% 50% 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 Which of the following statements is/are true? Corona is reduced by increasing the distance between the conductor All of these decreasing the supply frequency increasing the radius of the conductor increasing the distance between the conductor All of these decreasing the supply frequency increasing the radius of the conductor ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following rotor is used in thermal power plants? squirrel cage rotor salient pole rotor either of these cylindrical rotor squirrel cage rotor salient pole rotor either of these cylindrical rotor ANSWER DOWNLOAD EXAMIANS APP
Power Systems A moderator material should have small atomic mass. None of these may be any of the above. large atomic mass. small atomic mass. None of these may be any of the above. large atomic mass. ANSWER DOWNLOAD EXAMIANS APP
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