engineering recuitment MAHATRANSCO AE Electrical Mock Test Electrical Machines Alternator and Synchronous Motors Alternator Voltage Regulation
The effective resistance of a 2200-V, 50-Hz, 440-kVA, 1-phase alternator is 0.5 Ω. On short circuit, a field current of 40 A gives a full load current of 200 A. The open circuit EMF for the same field excitation is 1200 V. Find the synchronous impedance.
1
6.0 Ω
2
13 Ω
3
12 Ω
4
6.5 Ω
5
1 Ω