engineering recuitment GATE EE 2023-24 Test Series Electrical Machines Alternator and Synchronous Motors
The following test results are obtained from a 3-phase, 6000 kVA, 6600 V, star connected, 2-pole, 50-Hz turbo alternator.
With a field current of 125 A, the open circuit voltage is 8,000 V at the rated speed. With the same field current and rated speed, the short circuit current is 800 A. At the rated full load, the resistance drop is 3 percent.
The percentage regulation of the alternator on full-load and at a power factor of 0.8 lagging is _____Enter numerical value using the virtual keypad. Round off where necessary.