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

Electrical Machines

Electrical Machines
In a synchronous motor, damper windings are provided on

None of these
  pole faces.
  rotor shaft.
  stator frame.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A 3 - Φ slip ring motor has

  any of the above.
  double cage rotor.
  wound rotor.
  short-circuited rotor.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The magnetic field which initially induces emf in the armature in a self excited DC generator is because of

 armature reaction.
  residual magnetism.
None of these
  permanent magnets.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A smaller air gap in a induction motor helps to

 increase the starting torque.
 reduce the magnetizing current.
 reduce the chance of crawling.
 reduce the chance of cogging.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A transformer core is made up of a silicon steel laminations which has maximum flux density 1 Tesla. If it was cold rolled grain oriented its flux density increases to 1.6 Tesla. What is the saving in core size or area due to cold rolled grain oriented process?

 38%
 68%
 40%
 60%

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A DC series motor is running with a divertor connected across its field winding. If the divertor resistance is reduced then the speed of the motor will

 become execessively high.
 decrease.
 increase.
 remain unaltered.

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Electrical Machines

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
↑