Chapter 6 THYRISTORS MCQs

24 min Score: 0 Attempted: 0/24 Subscribe
1. .2 The four-layer devices with a control mechanism are commonly referred to as.





2. .3 Which of the following is a latching device?





3. .4 An SCR has PN junctions.





4. .5 An SCR has semiconductor layers.





5. .6 An SCR has three terminals





6. .7 An SCR behaves as a switch.





7. .8 An SCR is sometimes called





8. .9 An SCR is made up of





9. .10 In the normal operation of an SCR, anode is………w.r.t. cathode.





10. .11 In the normal operation of an SCR, gate is………w.r.t. cathode.





11. .12 The control terminal in an SCR is





12. .13 The normal way to turn ON an SCR is by





13. .14 An SCR is turned OFF by





14. .15 An SCR is a trigger device.





15. .16 When an SCR is turned ON, the voltage across it is about





16. .17 In an SCR circuit, the angle of conduction can be changed by





17. .18 If firing angle in an SCR circuit is increased, the output





18. .19 If the gate current is increased, then anode-cathode voltage at which SCR starts conduction





19. .20 A Diac has terminals.





20. .21 A Device which does not have a gate terminal is.





21. .22 A normal way to turn on a Diac is by.





22. .23 Which of the following can be triggered in either direction?





23. .24 A Triac is equivalent to two SCRs in.





24. .25 A Triac is a switch.





Contents Copyrights Reserved By T4Tutorials