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