• HOME
  • QUIZ
  • CONTACT US
EXAMIANS
  • COMPUTER
  • CURRENT AFFAIRS
  • ENGINEERING
    • Chemical Engineering
    • Civil Engineering
    • Computer Engineering
    • Electrical Engineering
    • Mechanical Engineering
  • ENGLISH GRAMMAR
  • GK
  • GUJARATI MCQ

Transformers

Transformers
Distribution transformers are generally designed for maximum efficiency around

25% load
90% load
50% load
Zero load

ANSWER DOWNLOAD EXAMIANS APP

Transformers
In a transformer, leakage flux

Is minimised by interleaving the primary and secondary windings
Produces mutually induced emf
Helps in transfer of energy
Is negligible at full load

ANSWER DOWNLOAD EXAMIANS APP

Transformers
A transformer operates poorly at very low frequencies because _____

Permeability of core is increased
Primary reactance is too much increased
None of the listed here
Magnetising current is abnormally high

ANSWER DOWNLOAD EXAMIANS APP

Transformers
Leakage flux in a transformer occurs because

Iron core has high permeability
Applied voltage is sinusoidal
Air is not a good magnetic insulator
Transformer is not an efficient device

ANSWER DOWNLOAD EXAMIANS APP

Transformers
Two things which are same for primary and secondary of transformer are ______

Resistance and leakage reactances
None of the listed here
Ampere turns and voltage per turns
Currents and induced voltages

ANSWER DOWNLOAD EXAMIANS APP

Transformers
When the turns ratio of a transformer is 20 and the primary ac voltage is 12 V, the secondary voltage is

2,400 V
12 V
120 V
240 V

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Transformers

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
↑