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 20160 J. 23060 J. 25060 J. 20060 J. 20160 J. 23060 J. 25060 J. 20060 J. ANSWER DOWNLOAD EXAMIANS APP
Power Systems What is the approximate efficiency of a normal thermal power station? 45-55% 60-70% 20-25% 30-40% 45-55% 60-70% 20-25% 30-40% 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 star-delta delta-star delta-delta star-star star-delta delta-star delta-delta ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 1- phase transmission line operating at 30 kV has radius of 1 cm and distance between conductors is 0.5 m. Assume m = δ =1, g = 21 kV/cm and frequency f = 50 Hz. Find the critical disruptive voltage? 34.64 kV/phase 17.32 kV/phase 41.075 kV/phase 82.15 kV/phase 34.64 kV/phase 17.32 kV/phase 41.075 kV/phase 82.15 kV/phase ANSWER DOWNLOAD EXAMIANS APP
Power Systems For complete protection of 3-phase system from the short circuit faults minimum number of relays required are two six three one two six three one ANSWER DOWNLOAD EXAMIANS APP
Power Systems The function of draft tube is reaction turbine is to convert kinetic energy of water. all of above. reduce water hammer. increase flow rate of water. convert kinetic energy of water. all of above. reduce water hammer. increase flow rate of water. ANSWER DOWNLOAD EXAMIANS APP
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