• 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
A 4 pole 50 Hz induction motor is running at 1470 rpm. Find the speed of stator magnetic field with respect to rotor?

 30 rpm
 zero
 1500 rpm
 1470 rpm

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Which of following winding is connected in series with armature winding of DC machine?

 Both Compensating and Commutating pole winding.
 Compensating winding.
 Commutating pole winding.
 Auxiliary winding.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The torque angle, in a synchronous motor, is the angle between

  the supply voltage and the back emf.
  the rotating stator flux and rotor flux.
None of these
  magnetizing electric current and back emf.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Transformer cooling and insulating oil must be of

 high viscosity.
  low viscosity.
 low resistivity.
 low BDV.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
At what power factor, the voltage regulation of a transformer can be zero ?

 Lagging power factor.
 Zero power factor.
  Leading power factor.
 Unity power factor.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Crawling in an induction motor is due to

  slip ring rotor.
  time harmonics in supply.
  space harmonics produced by winding currents.
  insufficient starting torque.

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
↑