In a 3-phase, 4-pole, 50 Hz synchronous motor, the frequency, pole num – McqOptions

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1.	In a 3-phase, 4-pole, 50 Hz synchronous motor, the frequency, pole number and load torque all are halved. The motor speed will be
A.	3000 r.p.m.
B.	1500 r.p.m.
C.	750 r.p.m.
D.	none of the above
Answer» C. 750 r.p.m.

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