engineering recuitment GATE EE 2023-24 Test Series Electrical Machines Alternator and Synchronous Motors
A 230 V, 6 pole, 50 Hz star connected synchronous motor has ra + jXa = (0.6 + j3) Ω per phase. Its field current is so adjusted that the motor draws 10 A at a unity power factor from the rated voltage source. The field current unchanged, the load on the motor is increased until it draws 20 A from the supply. The load angle at the second condition is ______ degree in magnitude.
1
55.44°
2
27.3°
3
21.3°
4
40.4°