• 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
The current drawn by a 220 V DC series motor of armature resistance 0.5Ω and back back emf 200 V is

 44 A.
 400 A.
 440 A.
  40 A.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
For a dc machine shunt resistance and armature resistance values are

 low and high
 low and low
 high and high
 high and low

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In a loaded DC motor, if the brushes are given a shift from the interpolar axis in the direction of rotation, then the commutation will

 deteriorate and the speed rises.
 deteriorate and the speed falls.
 improve and the speed rises.
 improve and the speed falls.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In 3 - Φ induction motor some times copper bars are placed deep in the rotor to

  improve efficiency.
  improve power factor.
  reduce copper loss.
  improve starting torque.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Which of following DC motors will have percentage increase of input current for the same percentage increase in torque?

  Shunt.
 Differntical compound.
 Series.
 Cummulative compound.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The short circuit test on a transformer is conducted to obtain

  copper losses.
 eddy current loss.
 hysteresis loss.
 core loses only.

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
↑