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