Practice Test: Question Set - 08
1. If starting winding of a single-phase induction motor is left in the circuit, it will
- (A) Run faster
- (B) Spark at light loads
- (C) Draw excessive current and overheat
- (D) Run slower
2. Which of the following motors is used for unity power factor?
- (A) Hysteresis motor
- (B) Schrage motor
- (C) Universal motor
- (D) Reluctance motor
3. In a hysteresis motor, the rotor must have
- (A) Retentivity
- (B) Resistivity
- (C) Susceptibility
- (D) None of the above
4. Which of the following motors can be run on AC. as well as D.C. supply?
- (A) Universal motor
- (B) Repulsion motor
- (C) Synchronous motor
- (D) Reluctance motor
5. A shaded pole motor can be used for
- (A) Toys
- (B) Hair dryers
- (C) Circulators
- (D) Any of the above
6. The value of starting capacitor of a fractional horse power motor will be
- (A) 100 uF
- (B) 200 uF
- (C) 300 uF
- (D) 400 uF
7. Which of the following motor will give the highest starting torque?
- (A) D.C. shunt motor
- (B) Schrage motor
- (C) Repulsion start and induction run motor
- (D) Universal motor
8. In case of high speed universal motor which of the following needs more attention?
- (A) End play
- (B) Air gap
- (C) Insulation in rotor
- (D) Balancing of rotor
9. Torque developed by a single phase induction motor at starting is
- (A) Pulsating
- (B) Uniform
- (C) None of the above
- (D) Nil
10. Which of the following motors has two separate windings on the motor?
- (A) Repulsion motor
- (B) Repulsion induction motor
- (C) Repulsion start induction run motor
- (D) None of the above
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