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