A synchronous motor with negligible armature resistance runs at a load angle of 20 at the rated frequency. If supply frequency is increased by 10%, keeping other parameters constant, the new load angle will be

A synchronous motor with negligible armature resistance runs at a load

1.	A synchronous motor with negligible armature resistance runs at a load angle of 20 at the rated frequency. If supply frequency is increased by 10%, keeping other parameters constant, the new load angle will be
A.	16
B.	18
C.	20
D.	22
Answer» C. 20

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A synchronous motor with negligible armature resistance runs at a load angle of 20 at the rated frequency. If supply frequency is increased by 10%, keeping other parameters constant, the new load angle will be

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