1. Universal motors are used in
Ans - food mixer.
2. Which of the following materials is generally used for the construction of a variable reluctance stepper motor?
Ans - Ferromagnetic.
3. In permanent magnet stepper motor, the direction of motor is _____ to the directions of the current flowing in winding.
Ans - dependent.
4. When the motor speed of the stepper motor increases, the torque will
Ans - decrease.
5. The stepper motor has full torque at
Ans - zero speed.
6. The auxiliary winding or shading coil of a shaded pole motor is made up of
Ans - copper ring.
7. A shaded pole motor is one of the types of
Ans- single phase induction motor.
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8. The shading coil of a shaded pole motor is
Ans - highly inductive.
9. Which of the following special motor has rotor movement in discrete step?
Ans - Stepper motor.
10. The single phase shaded pole motor generally has
Ans - squirrel cage rotor.
11. The direction of rotation of shaded pole motor can be changed by changing
Ans - shaded pole
12. In a shaded pole motor, the rotating field is developed by using
Ans - shaded poles.
13. When the capacitor of a capacitor start induction motor is short circuited, the motor will
Ans - not start.
14. In repulsion motors, the brush angle with respect to magnetic axis is kept about
Ans - 15 deg. to 45 deg.
15. The power factor of single phase repulsion motor is
Ans - high at highest speed.
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