Starting winding of a single phase motor of a refrigerator is disconnected from the circuit by means of a

After the starting winding of a single phase induction motor is disconnected from supply, it continues to run only on

A

running winding

B

rotor winding

C

field winding

D

compensating winding

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

The starting winding of a single-phase motor is placed in

A

Armature

B

Field

C

Rotor

D

Stator

If 'blue' means 'green', green' means 'yellow' 'yellow' means 'orange', 'orange' means 'black', 'black' means 'white', 'white' means 'red', 'red' means 'pink', 'pink' means 'brown', 'brown' means 'grey', than what is the color of human blood?

A

black

B

red

C

white

D

orange

While starting a synchronous motor by induction motor action, field winding is usually

A

connected to D.C. supply

B

short-circuited by low resistance

C

kept open-circuited

D

none of the above

In a capacitor start motor, the phase displacement between starting and running winding can be nearly

A

10°

B

30°

C

60°

D

90°

When the excitation of an unloaded salient pole synchronous motor suddenly gets disconnected

A

the motor stops

B

it runs as a reluctance motor at the same speed

C

it runs as a reluctance motor at a lower speed

D

none of the above

One fourth the price of a TV is equal to 1/6th the price of a refrigerator. If the total cost of the TV and the refrigerator is Tk 60000, what is the price of the TV?

A

Tk 22000

B

Tk 24000

C

Tk 27500

D

None of these

While starting a salient pole synchronous motor by induction motor action and connecting field discharge resistance across field, starting and accelerting torque is produced by

A

induction motor torque in field winding

B

induction motor torque in damper winding

C

eddy current and hysteresis torque in pole faces

D

reHetance motor torque due to saliency of the rotor

E

all of the above methods

The running winding of a single phase motor on testing with Meggar is found to be ground. Most probable location of the ground will be

A

At the end connections

B

At the end terminals

C

Anywhere on the winding inside a slot

D

At the slot edge where coil enters or comes out of the slot

Starting winding of a single phase motor of a refrigerator is disconnected from the circuit by means of a

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