Power Systems a 50 Hz, 3-phase synchronous generator has inductance per phase of 15 mH. The capacitance of the generator and circuit breaker is 0.002 µF. What is its natural frequency? 29 MHz 29 kHz 290 kHz 2.9 kHz 29 MHz 29 kHz 290 kHz 2.9 kHz ANSWER DOWNLOAD EXAMIANS APP
Power Systems Telecommunication lines are transposed to reduce the voltage level efficiency radio interference in communication lines All of these voltage level efficiency radio interference in communication lines All of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems Skin effective is more in case of None of these same in both cases power lines communication lines None of these same in both cases power lines communication lines ANSWER DOWNLOAD EXAMIANS APP
Power Systems If sag in an overhead line increase, tension in the line None of these increase decrease remains same None of these increase decrease remains same ANSWER DOWNLOAD EXAMIANS APP
Power Systems If R = 84 ohm/Km, G = 10-6 mho/Km, H = 0.01 H/Km, C = 0.061 μ F/Km and frequency = 1000 Hz, then what is the value of propagation constant of the transmission line 0.09 + j 0.018 per Km. 0.01 + j 0.02 per Km. 0.018 per Km. None of them. 0.09 + j 0.018 per Km. 0.01 + j 0.02 per Km. 0.018 per Km. None of them. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The most suitable circuit breaker for short line fault without switching resistor is none of these. oil circuit breaker. SF6 breaker. air blast circuit breaker. none of these. oil circuit breaker. SF6 breaker. air blast circuit breaker. ANSWER DOWNLOAD EXAMIANS APP
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