Single Phase Motors
Which of the following applications always have some load whenever switched on?

Piston drills
Fan motors
All of the listed here
Vaccum cleaners

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

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

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