Single Phase Motors
Which motor is normally free from mechanical and magnetic vibrations?

Hysteresis motor
Universal motor
Split phase motor
Shaded pole motor

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Single Phase Motors
Which of the following statements regarding a reluctance motor is incorrect ?

Its squirrel cage-rotor is of unsym-metrical magnetic construction in order to vary reluc-tance path between stator and rotor
It is nothing else but a single-phase, salient pole synchronous-induction motor
It requires no D.C. field excitation for its operation
It cannot be reversed, ordinarily

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