• 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 delta/star transformer is connected in parallel to a star/delta transformer. The turn ratio former is x times latter, the x is

 1/3
 √3
 1/√3
 3

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
What are the starters used for starting of cage motors?

 Auto transformer starter.
  All of these.
 Star-delta starter.
 DOL starter.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
If a transformer has turns ratio K, the primary and secondary current are I1 and I2 respectively and magnetizing current and core loss component of no load current Iμ and Iw respectively, then

 I1 = KI2 + Iw.
  I1 = KI2 + Iw + Iμ.ok
 I1 = KI2.
 I1 = KI2 + Iμ.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Thin laminations are used in a machine in order to reduce

 Copper losses
 Hysteresis losses
 Both 1 and 2
 Eddy current losses

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
An inverted V-curve of synchronous motor shows the variation of

 power factor and supply voltage during hunting
 power factor and dc excitation at constant load
 supply voltage and field current at constant excitation
All of these

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Direct axis reactance is defined as the ratio of

 Vmax to Imin
 Vmin to Imin
 Vmax to Imax
 Vmin to Imax

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
↑