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