Power Systems A three phase, 33 kV oil circuit breaker is rated 1200 A, the symmetrical breaking capacity is 2000 MVA, 3 secs. Then the making capacity is 5500 MVA. 5100 MVA. 5200 MVA. 5000 MVA. 5500 MVA. 5100 MVA. 5200 MVA. 5000 MVA. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 3 core cable gives on test a capacitance of 3.7 µF between two cores. Find the line charging current of the cable when it is connected to 11 kV, 50 Hz system? 14.7 mA. 1 A. 1.476 A. 14.76 A. 14.7 mA. 1 A. 1.476 A. 14.76 A. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A fuse wire of circular cross-section has a radius of 0.8 mm. The wire blows off at an current of 8 Amp. Calculate the radius of wire that will blow off at an current of 1 amp? 4 mm. 2 mm. 0.4 mm. 0.2 mm. 4 mm. 2 mm. 0.4 mm. 0.2 mm. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A buchholz relay is used for nether 1 nor 2 both 1 and 2 protection of a transformer against all internal faults protection of a transformer against all external faults nether 1 nor 2 both 1 and 2 protection of a transformer against all internal faults protection of a transformer against all external faults ANSWER DOWNLOAD EXAMIANS APP
Power Systems A CT is connected in ___________________ with the line. across. series. not connected. both A and B. across. series. not connected. both A and B. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following is/are the effects of corona All of these charging current increases interference decreases power loss decreases All of these charging current increases interference decreases power loss decreases ANSWER DOWNLOAD EXAMIANS APP
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