• 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
What are slot wedges in a DC machine made of?

 Mild steel.
 Fibre.
 Cast iron.
 Silicon steel.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In star-delta starting of squirrel cage induction motor compared to DOL starting the starting current and torque are

 1/√3, 1/3
 1/3, 1/√3
 1/√3, 1/√3
 1/3, 1/3

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A DC cumulatively compounded motor delivers rated load torque at rated speed. If the series field is short-circuited, then the armature current and speed will

 both increase
 decrease and increase respectively
 increase and decrease respectively
 both decrease

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A large series motor is never started without some mechanical load on it because otherwise it will

 develop excessive speed and damage itself.
 draw too much current.
 open fuse or circuit breaker.
 produce sparking at brushes.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In shapers and slotters which motor are preferred?

  Double cage motor.
  Slip ring IM.
  Synchronous motor.
  Squirrel cage IM.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A generator may loose residual magnetism due to

  heating.
  vibrations.
  any of these.
  over excitation.

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
↑