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