T10 QUIZ PHASE-6 (1-phase induction motor)

Q1:- A repulsion start induction run motor runs as an induction motor when the

1. commutator segments to a short circuited
2. brushes are shifted to a neutral palne
3. stator connections are reversed

ANSWER:-1

Q2:- The brushes in a repulsion motor are connected

1. to the external suppy
2. to the stator winding
3. together by a jumper wire
4. for induction running only

ANSWER:-3

Q3:- In a repulsion start induction run motor all commutator segment are short circuited by 

1. the brushes
2. a short cirsuiting device
3. an induction winding
4. equalizer connections

ANSWER:-2

Q4:- The short circuiting device in a repultion start induction run motor operates by

1. circuolating currents
2. magnetic attraction
3. centripetal force
4. centrifugal force

ANSWER:-4

Q5:- The commutator in a repulsion motor provides a means of connecting the 

1. armature windings
2. stator windings
3. short circuiting device
4. starting windings

ANSWER:-1

Q6:-The repulsion motor starts and runs as a 

1. split phase motor 
2. capacitor start motor
3. repulsion motor
4. compound motor

ANSWER:-3

Q7:-Which of the following motors has a squirrel cage winding embedded in the armature under the regular winding?

1. compound motor
2. repulsion start  induction motor
3. repulsion motor
4. repulsion induction motor

ANSWER:-4

Q8:-Changing the electrical connections to reverse the direction of a motor running at full speed is called?

1. slugging
2. plugging
3. dynamic braking
4. brush shifting

ANSWER:-2

Q9:-Cross connecting the commutator bars in repulsion motors minimises circulating current caused by

1. unequal airgaps b/w the stator and armature
2. shorted brushes
3. the short circuiting device
4. a shorted stator winding

ANSWER:-1

Q10:-Centrifugal short circuiting mechanisms are used only in 

1. spit phase repulsion motors
2. repulsion motors
3. repulsion induction motors
4. repulsion start induction run motors

ANSWER:-4