• 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
The typical time of rising time lies between

  1 - 4 µs.
 40 - 60 µs.
 90 - 100 µs.
 10 - 20 µs.

ANSWER DOWNLOAD EXAMIANS APP

Power Electronics
Materials used in heat sink should have

 high melting point.
 high thermal conductivity.
 large surface area.
  All of these.

ANSWER DOWNLOAD EXAMIANS APP

Power Electronics
A Triac has three terminals viz ___________

None of these
Cathode, anode, gate
Two main terminal and a gate terminal
Drain, source, gate

ANSWER DOWNLOAD EXAMIANS APP

Power Electronics
Maximum power loss occurs during

 all.
 delay time.
 spread time.
  rise time.

ANSWER DOWNLOAD EXAMIANS APP

Power Electronics
Let of a thyristor Vc1, Vc2, Vc3 are forward break over voltage for gate current Ig1, Ig2, Ig3 respectively. Then

 Vc1 > Vc2 > Vc3 when Ig1= Ig2
  Vc1 > Vc2 > Vc3 when Ig1 < Ig2 < Ig3.
 Vc1 > Vc2 > Vc3 when Ig1 > Ig2 > Ig3.
 Vc1 = Vc2 = Vc3 any value of Ig.

ANSWER DOWNLOAD EXAMIANS APP

Power Electronics
Spread time is defined as the interval during which

 anode current rises from 10 % to 90 % of its final value.
 anode voltage drops from 10 % of its initial value to zero.
  anode current rises from 90 % to its final value.
 both (A) and (B).

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
↑