Question 1

The brush is made of:

Accepted Answer

Carbon

Answer

Copper

Answer

Iron

Answer

silver

Question 2

Which of the following part does not belong to DC motor

Accepted Answer

centrifugal switch

Answer

commutator

Answer

Armature

Answer

Frame

Question 3

Select the incorrect statement

Accepted Answer

DC Generator produces AC current and voltage

Answer

Protect the working parts of the Dc Motor is called Frame

Answer

The end plate supports the weight of the armature.

Answer

The rotating part of Dc Motor called armature

Question 4

Choose the rotating part of the dc machine

Accepted Answer

Armature

Answer

End Plate

Answer

Frame

Answer

Brush

Question 5

Select the correct sentence

Accepted Answer

D.C motor used to convert electrical energy into mechanical energy

Answer

D.C motor used to convert Mechanical energy into electricalical energy

Answer

D.C motor used to convert electrical energy into electrical energy

Answer

D.C motor used to convert mechanical energy into mechanical energy

Question 6

The way that used to reverse the direction of rotation in dc motor is:

Accepted Answer

Interchange the terminals of armature coil

Answer

Change the frequency

Answer

Change the terminal voltage

Answer

remove brush

Question 7

The DC motor is used in the following medical equipment

Accepted Answer

Multipara monitor

Answer

Electronic stethoscope

Answer

Stethoscope

Answer

Thermometer

Question 8

As the load increases, the current drawn by the machine

Accepted Answer

Increase

Answer

Remains same

Answer

Decrease

Question 9

If we change the polarity of the supply then

Accepted Answer

Direction of rotation of motor will be reversed

Answer

Motor Stops

Answer

Change in the power of motor

Answer

No change in the direction of rotation of the motor

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