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