• HOME
  • QUIZ
  • CONTACT US
EXAMIANS
  • COMPUTER
  • CURRENT AFFAIRS
  • ENGINEERING
    • Chemical Engineering
    • Civil Engineering
    • Computer Engineering
    • Electrical Engineering
    • Mechanical Engineering
  • ENGLISH GRAMMAR
  • GK
  • GUJARATI MCQ

DC Motors

DC Motors
Small dc motors up to 5 HP usually have

8 poles
2 poles
6 poles
4 poles

ANSWER DOWNLOAD EXAMIANS APP

DC Motors
In dc machines fractional pitch winding is used

To reduce the generated emf
To increase the generated emf
To reduce the sparking
To improve cooling

ANSWER DOWNLOAD EXAMIANS APP

DC Motors
By putting controller resistance in series with the armature of a dc motor, we can obtain speeds

None of the listed here
Below the normal speed only
Above as well as below the normal speed
Above the normal speed only

ANSWER DOWNLOAD EXAMIANS APP

DC Motors
Which of the following methods gives the greatest braking torque?

None of the listed here
Regenerative braking
Plugging
Rheostatic braking

ANSWER DOWNLOAD EXAMIANS APP

DC Motors
Carbon brushes are preferable to copper brushes because _____

They have longer life
They have lower resistance
They reduce armature reaction
They reduce sparking

ANSWER DOWNLOAD EXAMIANS APP

DC Motors
The plugging gives the

Highest torque braking
Zero torque braking
None of the listed here
Smallest torque braking

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON DC Motors

DOWNLOAD APP

  • APPLE
    from app store
  • ANDROID
    from play store

SEARCH

LOGIN HERE


  • GOOGLE

FIND US

  • 1.70K
    FOLLOW US
  • EXAMIANSSTUDY FOR YOUR DREAMS.
  • SUPPORT :SUPPORT EMAIL ACCOUNT : examians@yahoo.com

OTHER WEBSITES

  • GUJARATI MCQ
  • ACCOUNTIANS

QUICK LINKS

  • HOME
  • QUIZ
  • PRIVACY POLICY
  • DISCLAIMER
  • TERMS & CONDITIONS
  • CONTACT US
↑