Power Systems Four identical alternators each are rated for 20 MVA, 11 KV having a subtransient reactance of 16% are working in parallel. The short circuit level at the busbar is 100 MVA 500 MVA 400 MVA 125 MVA 100 MVA 500 MVA 400 MVA 125 MVA ANSWER DOWNLOAD EXAMIANS APP
Power Systems Mechanical energy is supplied to a DC generator at the rate of 4200 J / S. The generator delivers 32.2 Amp at 120 V. How much energy is cost per minute of operation 23060 J. 25060 J. 20160 J. 20060 J. 23060 J. 25060 J. 20160 J. 20060 J. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Ferranti effect occurs under no load full load any of the above half load no load full load any of the above half load ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following statements is/are true? Corona is reduced by 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 increasing the distance between the conductor All of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 3 core cable gives on test a capacitance of 3.7 µF between two cores. Find the line charging current of the cable when it is connected to 11 kV, 50 Hz system? 1.476 A. 14.7 mA. 1 A. 14.76 A. 1.476 A. 14.7 mA. 1 A. 14.76 A. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following is/are the methods of improving transient stability? Fast acting excitation control All of these Dynamic breaking Fast acting governing system Fast acting excitation control All of these Dynamic breaking Fast acting governing system ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS