• 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 transformer has maximum efficiency at 3/4 load. The ratio of iron loss and full load copper loss is

 16/9.
 4/3.
 9/16.
 3/4.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A 3 stack stepper motor has 12 teeth on stator as well as on rotor. Determine the step size when each stack excited?

  10°.
 24°.
 30°.
 45°.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Which of the following starter is sufficient to start the DC series motor ?

All of these
 4 point starter
 2 point starter
 3 point starter

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Commonly used starters of cage motor is

  both A and B.
None of these
  DOL.
  star delta.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
If Kh is hysteresis constant, f is supply frequency, Bm maximum flux density in core of transformer, the expression of hysteresis loss in transformer, is given by

 KhfBm3.
 KhfBm.
  KhfBm1.6.
 Khf2Bm1.6.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
For same HP rating and full load speed which of following motor has poor starting torque?

 Differently compounded.
 Cummulative compound.
 Series.
 Shunt.

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
↑