Semiconductor Diode Quiz-MCQ

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

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

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

4. The most commonly used semiconductor is

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

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

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

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

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

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

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

12. A PN junction acts as a ……….

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

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

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

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

17. A trivalent impurity has ….. valence electrons

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

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

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

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

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

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

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

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