• 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 generator may loose residual magnetism due to

  heating.
  vibrations.
  over excitation.
  any of these.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The oscillation in a synchronous motor can be damped out by

  maintaining constant excitation.
  oscillation cannot be damped.
  providing damper bars in the rotor pole faces.
  running the motor on leading power factors.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
If starting current of a 3 - Φ induction motor is 5 times the rated current, while rated slip is 4 %, then ratio of starting torque to full load torque is

 0.8.
 0.4.
 0.6.
  1.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The full load copper loss and iron loss of transformer are 6400W and 5000W respectively. The copper loss and iron loss at half load will be respectively?

 3200 W and 2500 W
 1600 W and 5000 W
 1600 W and 1250 W
 3200 W and 5200 W

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A 100/10, 50 VA double winding transformer is converted to 100/110 V auto transformer. The rating of auto transformer is

 500 VA
 550 VA
 110 VA
 100 VA

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In a transformer zero voltage regulation is achieved at a load power factor which is

 lagging
 zero
 leading
 unity

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
↑