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

Power Electronics

Power Electronics
A power semiconductor may undergo damage due to

 Low dv/dt.
  High di/dt.
 High dv/dt.
 Low di/dt.

ANSWER DOWNLOAD EXAMIANS APP

Power Electronics
During reverse recovery time

 charge carrier of junction J1 is swept out.
 charge carrier of junction J3 is swept out.
 charge carrier of junction J2 recombined.
  both B and C.

ANSWER DOWNLOAD EXAMIANS APP

Power Electronics
What is used to protect the SCR from over current ?

 Heat sink.
  CB and fuse.
 Voltage clamping device.
 Snubber circuit.

ANSWER DOWNLOAD EXAMIANS APP

Power Electronics
Dynamic equalising circuit is useful

  both B and C.
 for voltage equalisation.
 to limit dV / dt of SCR.
 to limit di / dt of SCR.

ANSWER DOWNLOAD EXAMIANS APP

Power Electronics
When a UJT is turned ON, the resistance between emitter terminal and lower base terminal ___________

None of these
Is increased
Remains the same
Is decreased

ANSWER DOWNLOAD EXAMIANS APP

Power Electronics
A triac has ___________ semiconductor layers.

Two
Four
Three
Five

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Power Electronics

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
↑