Power Systems Which of the following is/are the methods of improving transient stability? Dynamic breaking All of these Fast acting governing system Fast acting excitation control Dynamic breaking All of these Fast acting governing system Fast acting excitation control ANSWER DOWNLOAD EXAMIANS APP
Power Systems A generator has reactances of sub transient (X")= 0.5 pu, transient (X') = 0.8 pu and synchronous reactance (X) = 5 pu. The voltages at these reactances are 1.2 V, 1.1 V and 1 V respectively. Find the corresponding sub transient fault current in pu? 3.975 pu 1.375 pu 2.4 pu 0.2 pu 3.975 pu 1.375 pu 2.4 pu 0.2 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 25 MVA, 11 kV alternator is supplying full load at a point of 0.75 lagging. Determine the percentage increase in earning capacity when it is operated at improved power factor of 0.96 lagging. 28 %. 56 %. 14 %. None of above 28 %. 56 %. 14 %. None of above ANSWER DOWNLOAD EXAMIANS APP
Power Systems In a nuclear reator thermal energy is obtained from all of above. fusion of radioactive material. fission of radioactive material. burning of fuel rods in oxygen. all of above. fusion of radioactive material. fission of radioactive material. burning of fuel rods in oxygen. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Advantages of pumped storage plants is/are most economical as a peak load supply plant operating time is minimum All of these used as load frequency control most economical as a peak load supply plant operating time is minimum All of these used as load frequency control ANSWER DOWNLOAD EXAMIANS APP
Power Systems Find the number of insulator discs required in string insulator, if operating voltage is 220 kV and maximum voltage of each disc is 11 kV? 10 20 13 21 10 20 13 21 ANSWER DOWNLOAD EXAMIANS APP
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