Power Systems A transmission line has surge impedance of 400 Ω, operating at Vs = Vr = 400 kV line is compensated with a shunt capacitance of 30%. Find the surge impedance loading with compensation? 478 MW 456 MW 400 MW 386 MW 478 MW 456 MW 400 MW 386 MW ANSWER DOWNLOAD EXAMIANS APP
Power Systems The maximum efficiency of modern coal fired steam steam raising thermal power plants is restricted to about 0.35( a low value), mainly because of high energy loss in boilers low steam turbine mechanical efficiency low alternator efficiency high energy loss in condenser high energy loss in boilers low steam turbine mechanical efficiency low alternator efficiency high energy loss in condenser ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 50 Hz, 17.32 kV generator is connected to a power system. The system reactance and capacitance per phase are 10 mH and 0.2 mF respectively. What is the maximum voltage across the contacts of the circuit breaker at an instant when it passes through zero? 31.28 kV 29.28 kV 28.28 kV 30.28 kV 31.28 kV 29.28 kV 28.28 kV 30.28 kV ANSWER DOWNLOAD EXAMIANS APP
Power Systems Per unit of any quantity is defined as base value of quantity /actual value of quantity in same units actual value of quantity /base value of quantity in different units base value of quantity /actual value of quantity in different units actual value of quantity /base value of quantity in same units base value of quantity /actual value of quantity in same units actual value of quantity /base value of quantity in different units base value of quantity /actual value of quantity in different units actual value of quantity /base value of quantity in same units 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 400 kV 600 kV 350 kV 500 kV 400 kV 600 kV 350 kV 500 kV ANSWER DOWNLOAD EXAMIANS APP
Power Systems In what from the initial energy will be released for the 200 MeV per fission by a neutron in a slow thermal nuclear reactor electromagnetic radiations. kinetic energy and sound energy. heat energy. kinetic energy of particles and electromagnetic radiation. electromagnetic radiations. kinetic energy and sound energy. heat energy. kinetic energy of particles and electromagnetic radiation. ANSWER DOWNLOAD EXAMIANS APP
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