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