• 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 commutator with a diameter of 50 cm rotating at 1000 rpm. For a brush width of 1.5 cm, find the time of commutation in ms.

 0.649.
  0.573.
 0.512.
 0.443.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In case of a dc motor the ratio Eb / E is indicative of

  ratio of input to output voltage.
  efficiency.
  ratio of starting to running torque.
  ratio of starting to running current.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The slip of an induction motor normally does not depend on

  synchronous speed.
  rotor speed.
  shaft torque.
  core loss component.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The synchronous speed of an induction motor will be increased by

  decreasing of frequency.
  speed can not be increased.
  increasing of frequency.
  increasing number of poles.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In a 3 - φ induction motor running at full load which of these parameters is stationary with respect to the stator mmf wave?

  Rotor mmf wave.
  Rotor winding.
  Both rotor and stator winding.
  Stator winding.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In diesel engine, gas engine type of machine contains ___________________ pole type of alternator.

 none of these.
  salient.
 non uniform cylindrical.
 cylindrical.

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
↑