• 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
What is the approximate efficiency of large transformers?

65%
75%
85%
95 %

ANSWER DOWNLOAD EXAMIANS APP

Transformers
Which of the following 3 phase connections of transformer create disturbances in communication systems

Star/Delta
Delta/Delta
Delta/Star
Star/Star

ANSWER DOWNLOAD EXAMIANS APP

Transformers
A transformer has a 1:6 turns ratio and a secondary coil load resistance of 470 . The load resistance as seen by the source is

13 Ω
7.8 Ω
78 Ω
1.3 Ω

ANSWER DOWNLOAD EXAMIANS APP

Transformers
A transformer transfers electrical energy from primary to secondary usually with a change in ______

Power
Voltage
Frequency
Time period

ANSWER DOWNLOAD EXAMIANS APP

Transformers
Harmonics in transformer result in

All of the listed here
increased I2R losses
magnetic interference with communication circuits
increased core losses

ANSWER DOWNLOAD EXAMIANS APP

Transformers
Open circuit test on transformers is conducted to determine

hysteresis losses
core losses
eddy current losses
copper losses

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
↑