• 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 case of induction motors the ratio of length to pole pitch for minimum cost, is taken as

 3 to 5.
  1.5 to 2.
 2 to 3.
 1.0.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Slip exists in

  none of above.
  induction motor.
  in both machines.
  synchronous motor.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In a DC generator sparking between brushes and commutator surface may be due to

  any of the above.
  too rapid reversal of current.
  under commutation.
 over commutation.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The rotor electromotive force of the IM is observed to make 100 complete alterations per minute, calculated slip

 0 .001 %.
 3 %.
  3.33 %.
None of these

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The polarity of a DC generator can be reversed by

 reversing the field current.
 any of above.
 reversing field electric current as well as direction of rotation.
 increasing field current.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In travelling cranes for hoisting and lowering which type of motor is preferred?

  DC series motor.
  AC slip ring motor.
  Single phase induction motor.
  Synchronous motor.

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
↑