Power Systems Which of the following is/are the methods of improving transient stability? All of these Dynamic breaking Fast acting governing system Fast acting excitation control All of these Dynamic breaking Fast acting governing system Fast acting excitation control ANSWER DOWNLOAD EXAMIANS APP
Power Systems A guard ring is used in string type insulator having 3 units to improve string efficiency. Find the capacitance of metal link 2 if pin to earth capacitance of each unit is 1 F? 0.5 F 1 F 2 F 4 F 0.5 F 1 F 2 F 4 F ANSWER DOWNLOAD EXAMIANS APP
Power Systems In thermal power stations, economiser will reduce the thermal efficiency reduce the heat increase the thermal efficiency both 2 and 3 reduce the thermal efficiency reduce the heat increase the thermal efficiency both 2 and 3 ANSWER DOWNLOAD EXAMIANS APP
Power Systems The ABCD constants of a 3-phase transmission line are A = D = 0.8∠1°, B = 170∠85° Ω , C = 0.002∠90.4° ℧. The sending end voltage is 400 kV. The receiving end voltage under no load condition is 350 kV 500 kV 600 kV 400 kV 350 kV 500 kV 600 kV 400 kV ANSWER DOWNLOAD EXAMIANS APP
Power Systems A Pelton wheel turbine having a rated speed of 300 rpm is connected to an alternator to produce power at 50 Hz. The number of poles required in the alternator is 20 4 10 8 20 4 10 8 ANSWER DOWNLOAD EXAMIANS APP
Power Systems The internal flux linkage due to internal flux of a conductor is I/6*10-7 wb-T/m I/2*10-7 wb-T/m All of these I/4*10-7 wb-T/m I/6*10-7 wb-T/m I/2*10-7 wb-T/m All of these I/4*10-7 wb-T/m ANSWER DOWNLOAD EXAMIANS APP
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