HomeElectronics Multiple choice question MCQ online testSemiconductor Diode Quiz-MCQ Semiconductor Diode Quiz-MCQ Leave a Comment / Electronics Multiple choice question MCQ online test Share this 0% 0 votes, 0 avg Created on September 03, 2022Basic electronics Semiconductor Diode (PN junction) 1 / 25 Category: Semiconductor diode (PN junction) 1. A reverse biased pn junction has resistance of the order of Ω KΩ None of the above MΩ 2 / 25 Category: Semiconductor diode (PN junction) 2. A hole in a semiconductor is defined as ……………. A free electron A free neutron A free proton The incomplete part of an electron pair bond 3 / 25 Category: Semiconductor diode (PN junction) 3. With forward bias to a pn junction , the width of depletion layer ……… None of the above Decreases Remains the same Increases 4 / 25 Category: Semiconductor diode (PN junction) 4. A forward biased pn junction diode has a resistance of the order of KΩ MΩ Ω None of these 5 / 25 Category: Semiconductor diode (PN junction) 5. To a first approximation of a forward-biased diode is treated like a 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 Lose switch in series with a small resistance and a battery 6 / 25 Category: Semiconductor diode (PN junction) 6. A semiconductor is formed by ……… bonds. Co-ordinate Electrovalent None of the above Covalent 7 / 25 Category: Semiconductor diode (PN junction) 7. A pentavalent impurity has ………. Valence electrons 6 3 5 4 8 / 25 Category: Semiconductor diode (PN junction) 8. When a pure semiconductor is heated, its resistance ………….. Goes up Goes down Remains the same Can’t say 9 / 25 Category: Semiconductor diode (PN junction) 9. What is the dc output voltage of an unfiltered half wave rectifier whose peak output voltage 9.8v 9.8v 3.1v 6.23v 19.6v 10 / 25 Category: Semiconductor diode (PN junction) 10. At absolute temperature, an intrinsic semiconductor has ………. No holes or free electrons Many holes A few free electrons Many free electrons 11 / 25 Category: Semiconductor diode (PN junction) 11. The most commonly used semiconductor is Silicon Germanium Carbon Sulphur 12 / 25 Category: Semiconductor diode (PN junction) 12. A semiconductor has ………… temperature coefficient of resistance. Positive Negative Zero None of the above 13 / 25 Category: Semiconductor diode (PN junction) 13. A reverse bias pn junction has ………… Very low resistance Almost no current Very narrow depletion layer Large current flow 14 / 25 Category: Semiconductor diode (PN junction) 14. In a semiconductor, current conduction is due to …….. Holes and free electrons Only free electrons Only holes None of the above 15 / 25 Category: Semiconductor diode (PN junction) 15. Under normal conditions a diode conducts current when it is …………… reverse biased avalanched saturated forward biased 16 / 25 Category: Semiconductor diode (PN junction) 16. The addition of trivalent impurity to a semiconductor creates many …….. Holes Free electrons Valence electrons Bound electrons 17 / 25 Category: Semiconductor diode (PN junction) 17. The leakage current in a pn junction is of the order of kA mA µA A 18 / 25 Category: Semiconductor diode (PN junction) 18. A trivalent impurity has ….. valence electrons 6 4 5 3 19 / 25 Category: Semiconductor diode (PN junction) 19. A semiconductor has generally ……………… valence electrons. 4 3 2 6 20 / 25 Category: Semiconductor diode (PN junction) 20. A PN junction acts as a ………. Bidirectional switch Controlled switch None of the above Unidirectional switch 21 / 25 Category: Semiconductor diode (PN junction) 21. In an intrinsic semiconductor, the number of free electrons ……… Equals the number of holes Is greater than the number of holes Is less than the number of holes None of the above 22 / 25 Category: Semiconductor diode (PN junction) 22. The leakage current across a pn junction is due to ………….. Minority carriers Majority carriers Junction capacitance None of the above 23 / 25 Category: Semiconductor diode (PN junction) 23. At room temperature, an intrinsic silicon crystal acts approximately as …… A conductor An insulator A battery A piece of copper wire 24 / 25 Category: Semiconductor diode (PN junction) 24. The forward voltage drop across a silicon diode is about 3 V 2.5 V 0.7 V 5 V 25 / 25 Category: Semiconductor diode (PN junction) 25. in n-type semiconductors the minority current carriers are Free electrons The holes Valence electrons Protons Your score is LinkedIn Facebook Twitter 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 Share this