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