Power Systems Load frequency control is achieved by properly matching the individual machines generated voltages. generator ratings. reactive powers. turbine inputs. generated voltages. generator ratings. reactive powers. turbine inputs. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which type of connection is employed for current transformers for the protection of star- delta connected 3-phase transformer? star-star delta-delta delta-star star-delta star-star delta-delta delta-star star-delta ANSWER DOWNLOAD EXAMIANS APP
Power Systems A CT is connected in ___________________ with the line. not connected. both A and B. across. series. not connected. both A and B. across. series. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line has impedance of (0.005 + j0.05) pu. Find the line at which maximum value of negative DC off set current is produced, if it is applied with Vm cosωt? 1.47 msec 2.63 msec 9.68 4.68 msec 1.47 msec 2.63 msec 9.68 4.68 msec ANSWER DOWNLOAD EXAMIANS APP
Power Systems A hydraulic turbine having rated speed of 250 rpm is connected to a synchronous generator. In order to produce power at 50 Hz, the numbers of pole are required in the generator 6. 16. 24. 12. 6. 16. 24. 12. ANSWER DOWNLOAD EXAMIANS APP
Power Systems What is the approximate efficiency of a normal thermal power station? 20-25% 60-70% 45-55% 30-40% 20-25% 60-70% 45-55% 30-40% ANSWER DOWNLOAD EXAMIANS APP
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