• 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
Which semiconductor device acts like a diode and two transistor?

 UJT.
 SCR.
  Triac.
 Diac.

ANSWER DOWNLOAD EXAMIANS APP

Power Electronics
A triac is equivalent to two SCRs ___________.

In inverse-parallel
In parallel
In series
None of these

ANSWER DOWNLOAD EXAMIANS APP

Power Electronics
For an SCR gate cathode characteristic is a straight line of 130. For triggered source volume of 15 V and allowable gate power dissipation of 0.5 W compute the gate source resistance?

 11.19 ohm
  111.9 ohm
 108 ohm
 115 ohm

ANSWER DOWNLOAD EXAMIANS APP

Power Electronics
The turn-on time of an SCR with inductive load is 20 µs. The puls train frequency is 2.5 KHz with a mark/space ratio of 1/10, then SCR will

  Turn on.
 Not turn on.
 Turn on if pulse frequency us increased to two times.
 Turn on if inductance is removed.

ANSWER DOWNLOAD EXAMIANS APP

Power Electronics
Dynamic equalising circuit is useful

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

ANSWER DOWNLOAD EXAMIANS APP

Power Electronics
Which statement is true for latching current ?

 It is related to conduction process of device.
 It is related to turn off process of the device.
  It is related to turn on process of the device.
 Both C and D.

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
↑