• 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 is the phase difference between two windings of A.C servomotor ?

 90°.
 30°.
 60°.
 120°.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The ventilating ducts in most of DC machine are

 radial as well as longitudinal.
 none of these.
 radial.
 longitudinal.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
_____________ types of induction motor are widely used.

  Three phase IM.
  Squirrel cage IM.
  Single phase IM.
  Slip ring IM.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
To control the speed of an induction motor, the supply frequency is reduced by 10%. For the same magnetizing current to remain constant, the supply voltage must be

 increased by 10%
 reduced by 10%
 increased by 20%
 reduced by 20%

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
What is/are the necessary conditions for parallel operation of alternators?

 Both 1and 2
 Speed of alternators should be same
 Frequency should be same
 Terminal voltage is same

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A separately-excited dc motor has an armature resistance of 0.5 Ω. It runs off a 250 V dc supply Drawing an armature current of 20 A at 1500 rpm. The torque developed for an armature current Of 10 A, for the same field current, will be

 15.28 Nm
 16.55 Nm
 15.92 Nm
 15.6 Nm

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
↑