Q.An ideal synchronous motor has no starting torque because the 

  • ARotor is made up of salient poles
  • BRelative velocity between the stator and the rotor mmfs is zero
  • CRelative velocity between the stator and rotor mmfs is not zero
  • DRotor winding is highly reactive 
Correct Answer : (B)

Relative velocity between the stator and the rotor mmfs is zero

Hints :

An ideal synchronous motor has no starting torque because the Relative velocity between the stator and the rotor mmfs is zero.

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