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