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