EEE objective questions single phase induction motor

Q1:- which motor have high torque?

A. Shaded pole motor
B. Universal motor
C. All (right)

Q2:- In ceiling fan which motor is used?

A. Parmanent capacitor motor (right)
B.capacitor start capacitor run motor
C. Universal motor
D. Shaded pol motor

Q3:- which motor have speed more than 3000 rpm? 

A. Universal motor (right)
B. Shaded pole motor
C. Capacitor start capacitor run motor 
D. All

Q4:- Which motor is used in refrigerator ? 
A. Universal motor 
B. Capacitor motor (right)
C. D.C. Shunt motor
D. Shaded pole motor

Q.5 Universal motor can operate on? 

A. A.c. Only
B. D.c. Only 
C. Both (right)
D. None 

Q6:- A capacitor –start single phase I.M. is switched on to supply with its capacitor replaced be an inductor of equivalent reactance value. It will

a) Not start at all

    b) Start and run slowly

    c) Start and run at rated speed

    d) Start and then stop

ANSWER:- a

Q7:- In a two value capacitor motor  the capacitor used for running purposes is

     a)  Ac electrolytic type

     b)  Paper spaced oil-filled type

    c)  Air capacitor

    d)  Ceramic type

ANSWER:-b

Q8:- Compensating  winding is employed in ac series motor in  order to

 a)  Increase the torque

 b) Reduce sparking at brushes

     c)  Reduce the effects of armature reaction

     d)  None

ANSWER:-b

Q9:- If 220 V dc series motor is operated on 50 Hz ac supply ,it will

     a) Have poor efficiency

     b) Have poor Pf

     c) Give spark

     d) All of these

ANSWER:-d

Q10:- The direction of rotation of a hysteresis motor is determined by

      a) Position of shaded pole with respect to main pole

      b) Retentivity of the rotor material

      c) Interchanging the supply leads

    d) None of these

ANSWER:-a