Power Systems A three phase, 33 kV oil circuit breaker is rated 1200 A, 2000 MVA, 3 secs. The symmetrical breaking current is 50 kA. 45 kA. 35 kA. 55 kA. 50 kA. 45 kA. 35 kA. 55 kA. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Under over excitation synchronous phase modifier works as shunt capacitor shunt reactor series capacitor any of the above shunt capacitor shunt reactor series capacitor any of the above ANSWER DOWNLOAD EXAMIANS APP
Power Systems Consider a long, two wire line composed of solid round conductors. The radius of both conductors is 0.25 cm and distance between their centers is 100 cm. If this distance is doubled, then the inductance per unit length. Doubled. Halves. Increase but does not doubled. Decrease but does not halves. Doubled. Halves. Increase but does not doubled. Decrease but does not halves. ANSWER DOWNLOAD EXAMIANS APP
Power Systems If we increase the spacing between the phase conductors, the value of line inductance increase remains unaffected None of these decrease increase remains unaffected None of these decrease ANSWER DOWNLOAD EXAMIANS APP
Power Systems Stock bridge dampers are used to All of these reduce the tension increase the sag reduce the vibrations at the point of support All of these reduce the tension increase the sag reduce the vibrations at the point of support ANSWER DOWNLOAD EXAMIANS APP
Power Systems Water hamming process in pen-stocks results in noise increases, pressure increases, velocity decreases. pressure increases. None of these noise increases. noise increases, pressure increases, velocity decreases. pressure increases. None of these noise increases. ANSWER DOWNLOAD EXAMIANS APP
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