T10 QUIZ Single phase I.M. Phase-4

Q1:-How can the direction of rotation of a split-phase be reversed?

1. By using reversing stater
2. By reversing the connection to both sindings
3. By reversing the connection to the starting windings
4. By Changing the brush position

ANSWER:-3

Q2:- Instead of using three different windings per poes group in the stator, one large coil is wound called a 

1. Lap winding
2. Wave winding
3. Complex winding

Skein winding
ANSWER:-4

Q3:- If all the stator coils of a motor are connected for the same magnetic polarity, there will be formed an equal number of 

1. Consequent poles with opposite polarity
2. Consequent poles with same polarity
3. Rotor poles with opposite polarity
4. Rotor poles with same polarity

ANSWER:-1

Q4:- The stator winding makes an electrical contact with the motor frame. The winding is said to be 

1. Open
2. Grounded
3. Lap winding
4. Skein wound

ANSWER:-2

Q5:- A megohmmeter reading of zero or low ohms is indicated between the stator winding and motor frame. The winding is 

1. Open
2. Series connected
3. Grounded 
4. Cross connected

ANSWER:-3

Q6:- An open in the centrifugal switch circuit gives an indication of a/an

1. Shorted winding
2. Shorted switch
3. grounded winding
4. Open winding

ANSWER:-4

Q7:- A  motor runs slower than normal . The defect may be

1. Worn bearing
2. Improper size fuses
3. open running winding
4. wrong size brushes

ANSWER:-1

Q8:-The capacity of sweing machine aprox

1. 100 W - 150W
2. 1000 W
3. 10 W - 15W
4. 15 W - 25W

ANSWER:-1

Q9:-Which of the following motor is reversible motor

1. Universal motor
2.  Shaded pole motor
3. Both
4. None of these

ANSWER:-1

Q10:-Which motor will need high efficiency capacitor 

1. 0.75 HP , 1140 RPM
2. 0.5 HP , 1140 RPM
3. 0.25 HP , 1725 RPM
4. 1/8 HP , 3450 RPM

ANSWER:-1