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