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