Power Systems The average thermal efficiency of a modern nuclear power plant is about 30 %. 40 %. 80 %. 60 %. 30 %. 40 %. 80 %. 60 %. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Isolator in sub station is open under ------------- condition? full load short circuit no load any of the above full load short circuit no load any of the above ANSWER DOWNLOAD EXAMIANS APP
Power Systems Water hamming process in pen-stocks results in None of these pressure increases. noise increases. noise increases, pressure increases, velocity decreases. None of these pressure increases. noise increases. noise increases, pressure increases, velocity decreases. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A fault occurring at the terminals of an unloaded synchronous generator operating at its rated voltage has resulted in the following values of currents and voltages. IR0 = j 2.37 pu IR1 = -j 3.05 pu IR2 = j 0.68 pu VR0 = VR1 = VR2 = 0.237 pu. Which of the following faults has occurred? LLL LG LL LLG LLL LG LL LLG ANSWER DOWNLOAD EXAMIANS APP
Power Systems The corona loss on a particular system at 60 Hz is 1 kW/km per phase. What is the corona loss at 50 Hz in kW/km per phase? 1 0.93 0.882 1.13 1 0.93 0.882 1.13 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 sinωt? 1.47 msec 9.68 msec 2.63 msec 4.68 msec 1.47 msec 9.68 msec 2.63 msec 4.68 msec ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS