HomeElectronics Multiple choice question MCQ online testSemiconductor Diode Quiz-MCQ Semiconductor Diode Quiz-MCQ Leave a Comment / Electronics Multiple choice question MCQ online test Spread the love 0% 1 votes, 5 avg Created on September 03, 2022Basic electronics Semiconductor Diode (PN junction) 1 / 25 Category: Semiconductor diode (PN junction) 1. The forward voltage drop across a silicon diode is about 0.7 V 5 V 2.5 V 3 V 2 / 25 Category: Semiconductor diode (PN junction) 2. A trivalent impurity has ….. valence electrons 4 5 6 3 3 / 25 Category: Semiconductor diode (PN junction) 3. A hole in a semiconductor is defined as ……………. A free neutron The incomplete part of an electron pair bond A free proton A free electron 4 / 25 Category: Semiconductor diode (PN junction) 4. In a semiconductor, current conduction is due to …….. Holes and free electrons Only free electrons Only holes None of the above 5 / 25 Category: Semiconductor diode (PN junction) 5. A semiconductor has ………… temperature coefficient of resistance. Negative Zero None of the above Positive 6 / 25 Category: Semiconductor diode (PN junction) 6. With forward bias to a pn junction , the width of depletion layer ……… Increases None of the above Remains the same Decreases 7 / 25 Category: Semiconductor diode (PN junction) 7. A forward biased pn junction diode has a resistance of the order of KΩ None of these MΩ Ω 8 / 25 Category: Semiconductor diode (PN junction) 8. A semiconductor has generally ……………… valence electrons. 6 4 3 2 9 / 25 Category: Semiconductor diode (PN junction) 9. A reverse biased pn junction has resistance of the order of MΩ None of the above Ω KΩ 10 / 25 Category: Semiconductor diode (PN junction) 10. To a first approximation of a forward-biased diode is treated like a Closed switch with the voltage drop of zero volt Open switch with infinite resistance Close switch in series with the battery voltage of 0.7v Lose switch in series with a small resistance and a battery 11 / 25 Category: Semiconductor diode (PN junction) 11. A reverse bias pn junction has ………… Large current flow Almost no current Very low resistance Very narrow depletion layer 12 / 25 Category: Semiconductor diode (PN junction) 12. in n-type semiconductors the minority current carriers are Valence electrons Free electrons Protons The holes 13 / 25 Category: Semiconductor diode (PN junction) 13. The addition of trivalent impurity to a semiconductor creates many …….. Valence electrons Holes Free electrons Bound electrons 14 / 25 Category: Semiconductor diode (PN junction) 14. The leakage current in a pn junction is of the order of µA A mA kA 15 / 25 Category: Semiconductor diode (PN junction) 15. The leakage current across a pn junction is due to ………….. None of the above Minority carriers Majority carriers Junction capacitance 16 / 25 Category: Semiconductor diode (PN junction) 16. A PN junction acts as a ………. Bidirectional switch Controlled switch Unidirectional switch None of the above 17 / 25 Category: Semiconductor diode (PN junction) 17. At room temperature, an intrinsic silicon crystal acts approximately as …… An insulator A conductor A battery A piece of copper wire 18 / 25 Category: Semiconductor diode (PN junction) 18. When a pure semiconductor is heated, its resistance ………….. Goes down Can’t say Remains the same Goes up 19 / 25 Category: Semiconductor diode (PN junction) 19. The most commonly used semiconductor is Sulphur Germanium Silicon Carbon 20 / 25 Category: Semiconductor diode (PN junction) 20. Under normal conditions a diode conducts current when it is …………… forward biased saturated reverse biased avalanched 21 / 25 Category: Semiconductor diode (PN junction) 21. A semiconductor is formed by ……… bonds. None of the above Co-ordinate Electrovalent Covalent 22 / 25 Category: Semiconductor diode (PN junction) 22. In an intrinsic semiconductor, the number of free electrons ……… Is greater than the number of holes Is less than the number of holes Equals the number of holes None of the above 23 / 25 Category: Semiconductor diode (PN junction) 23. What is the dc output voltage of an unfiltered half wave rectifier whose peak output voltage 9.8v 6.23v 19.6v 3.1v 9.8v 24 / 25 Category: Semiconductor diode (PN junction) 24. At absolute temperature, an intrinsic semiconductor has ………. A few free electrons No holes or free electrons Many free electrons Many holes 25 / 25 Category: Semiconductor diode (PN junction) 25. A pentavalent impurity has ………. Valence electrons 4 3 5 6 Your score is LinkedIn Facebook 0% Restart quiz Exit Anonymous feedback Thank you Send feedback Transistor questions and answers Zener Diode MCQ with answers Logic gates MCQ Quiz Basic electronics MCQ question answer Semiconductor PN diode Spread the love
