DC Motor or Direct Current Motor Multiple Choice Questions and Answers


6. The induced EMF in the armature conductors of a DC motor is .......


   A.Sinusoidal

   B.Trapezoidal

   C.Rectangular

   D.Alternating


✔ View Answer


A.Sinusoidal

✍ Your Comments

Your name:

Your Email:

Your Comments:


You can send your comments directly at info@mechanicaltutorial.com.


7. The normal value of the armature resistance of a DC motor is.......


   A.0.005

   B.0.5

   C.10

   D.100


✔ View Answer


B.0.5

✍ Your Comments

Your name:

Your Email:

Your Comments:


You can send your comments directly at info@mechanicaltutorial.com.


8. The maximum torque of DC motors is limited by .........


   A.Commutation

   B.Heating

   C.Speed

   C.Armature current


✔ View Answer


A.Commutation

✍ Your Comments

Your name:

Your Email:

Your Comments:


You can send your comments directly at info@mechanicaltutorial.com.


9. The Eb/V ratio of a DC motor is an indication of its ......


   A.Efficiency

   B.Speed regulation

   C.Starting torque

   D.Running torque


✔ View Answer


A.Efficiency

✍ Your Comments

Your name:

Your Email:

Your Comments:


You can send your comments directly at info@mechanicaltutorial.com.


10. Under constant load conditions, the speed of a d.c. motor is affected by .......


   A.Field flux

   B.Armature current

   C.Back EMF

   D.Both armature current and back emf


✔ View Answer


A.Armature current

✍ Your Comments

Your name:

Your Email:

Your Comments:


You can send your comments directly at info@mechanicaltutorial.com.




< 1 2 3 4 5 Next>






Enter Your Suggestion/Comments Here










Can't read the image? Click here to refresh