Semiconductor Diode Quiz-MCQ

1.  A semiconductor is formed by ……… bonds.

2. With forward bias to a pn junction , the width of depletion layer ………

3. A hole in a semiconductor is defined as …………….

4.  When a pure semiconductor is heated, its resistance …………..

5. The addition of trivalent impurity to a semiconductor creates many ……..

6. What is the dc output voltage of an unfiltered half wave rectifier whose peak output voltage 9.8v

7. A pentavalent impurity has ………. Valence electrons

8.  A reverse biased pn junction has resistance of the order of

9. The most commonly used semiconductor is

10.  In a semiconductor, current conduction is due to ……..

11. At absolute temperature, an intrinsic semiconductor has ……….

12. A reverse bias pn junction has …………

13. The forward voltage drop across a silicon diode is about

14. The leakage current across a pn junction is due to …………..

15.  The leakage current in a pn junction is of the order of

16. A semiconductor has generally ……………… valence electrons.

17. In an intrinsic semiconductor, the number of free electrons ………

18. To a first approximation of a forward-biased diode is treated like a

19. A forward biased pn junction diode has a resistance of the order of

20. Under normal conditions a diode conducts current when it is ……………

21. A trivalent impurity has ….. valence electrons

22. A PN junction acts as a ……….

23. in n-type semiconductors the minority current carriers are

24. At room temperature, an intrinsic silicon crystal acts approximately as ……

25. A semiconductor has ………… temperature coefficient of resistance.