Chapter 7 SPECIAL SOLID STATE DEVICES MCQs

20 min Score: 0 Attempted: 0/20 Subscribe
1. .1 A UJT has





2. .2 In a UJT, the p-type emitter is





3. .3 Internally UJT acts as?





4. .4 When the emitter terminal of a UJT is open; the resistance between the base terminals is generally





5. .5 When a UJT is turned ON, the resistance between emitter terminal and lower base terminal





6. .6 To turn on UJT, the forward bias on the emitter diode should be the peak point voltage.





7. .7 A UJT is sometimes called





8. .8 Between the peak point and the valley point of UJT emitter characteristics we have





9. .9 Which of the following is not a characteristic of UJT?





10. .10 The UJT may be used as





11. .11 The device that exhibits negative resistance region is





12. .12 In a phototransistor, base current is





13. .13 Phototransistors are used in





14. .14 The phototransistor effectively converts variations in light energy to





15. .15 LASCR, when activated by a sufficient amount of light, conducts current





16. .16 LASCR conducts by applying light of specific





17. .17 The key advantage of an optocoupler between the input and output circuits is the electrical





18. .18 Which of the following is not a type of an Optocoupler





19. .19 An electronic component that interconnects two separate electrical circuits by means of a light sensitive optical interface





20. .20 The optocouplers works well on high-voltage signals.





Contents Copyrights Reserved By T4Tutorials