DC MOTOR 2

A detailed illustration of a DC motor with labels for components, showing its application in machinery and electricity, in a technical and educational style.

DC Motor Knowledge Quiz

Test your knowledge on D.C. motors with this engaging quiz! Challenge yourself with a variety of questions covering essential concepts, applications, and technical details about D.C. motors.

Whether you are a student, a teacher, or just a motor enthusiast, this quiz is designed to enhance your understanding of:

Types of D.C. motors
Motor applications
Starting mechanisms
Torque and speed characteristics

10 Questions2 MinutesCreated by WiringWizard237

11. In which of the following applications, D.C.series motor is invariably used?

Starter for a car

Drive for a water pump

Fan motor

Motor operation in A.C. or D.C.

12. A three point starter is considered suitable for ____________.

Shunt motor

Shunt as well as compound motor

Shunt, compound and series motor

All D.C motors

13. Which of the following rule can be used to determine the direction of rotation of D.C.motor?

Lenz's law

Faraday's law

Coloumb's law

Fleming's left hand rule

14. Which of the following load normally needs starting torque more than the rated torque?

Blower

Conveyers

Air coompressor

Centrifugal pumps

15. The speed of the D.C.series motor is _____________

Propotional to the armature current

Propotional to the square of the armature current

Proportional to field current

Inversely proportional to the armature current

16. In a D.C.series motor, if the armature current is reduced by 50%, the torque of the motor will be equal to _______________

100% of the previous value

50% of the previous value

25% of the previous value

10% of the previous value

17. The current drawn by the armature of the D.C.motor is directly proportional to ______

The resistance of the armature

The speed of the motor

The voltage across the terminals

None of the above

18. The power mentioned on the name plate of an electric motor indicates __________

The power drawn in kW

The power drawn in kVA

The gross power

The output power available at the shaft

19. For the same H.P.rating and full load speed, the following motor has poor starting torque ____________

Shunt

Series

Differentially compound

Cumulatively compound

20. If the supply voltage for a D.C.motor is increased, which of the following will decrease?

Starting torque

Operating speed

Full load current

All of the above

DC MOTOR 2

DC Motor Knowledge Quiz

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