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. 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 Close switch in series with the battery voltage of 0.7v Closed switch with the voltage drop of zero volt 2 / 25 Category: Semiconductor diode (PN junction) 2. A reverse bias pn junction has ………… Very low resistance Very narrow depletion layer Large current flow Almost no current 3 / 25 Category: Semiconductor diode (PN junction) 3. A semiconductor has ………… temperature coefficient of resistance. None of the above Negative Positive Zero 4 / 25 Category: Semiconductor diode (PN junction) 4. 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 5 / 25 Category: Semiconductor diode (PN junction) 5. A PN junction acts as a ………. None of the above Controlled switch Unidirectional switch Bidirectional switch 6 / 25 Category: Semiconductor diode (PN junction) 6. With forward bias to a pn junction , the width of depletion layer ……… None of the above Decreases Increases Remains the same 7 / 25 Category: Semiconductor diode (PN junction) 7. The leakage current across a pn junction is due to ………….. Junction capacitance Minority carriers Majority carriers None of the above 8 / 25 Category: Semiconductor diode (PN junction) 8. A hole in a semiconductor is defined as ……………. A free proton A free electron The incomplete part of an electron pair bond A free neutron 9 / 25 Category: Semiconductor diode (PN junction) 9. A trivalent impurity has ….. valence electrons 3 6 5 4 10 / 25 Category: Semiconductor diode (PN junction) 10. A semiconductor is formed by ……… bonds. Co-ordinate Covalent None of the above Electrovalent 11 / 25 Category: Semiconductor diode (PN junction) 11. The leakage current in a pn junction is of the order of µA A mA kA 12 / 25 Category: Semiconductor diode (PN junction) 12. In a semiconductor, current conduction is due to …….. Holes and free electrons Only holes None of the above Only free electrons 13 / 25 Category: Semiconductor diode (PN junction) 13. in n-type semiconductors the minority current carriers are Free electrons Protons The holes Valence electrons 14 / 25 Category: Semiconductor diode (PN junction) 14. When a pure semiconductor is heated, its resistance ………….. Goes up Goes down Remains the same Can’t say 15 / 25 Category: Semiconductor diode (PN junction) 15. At room temperature, an intrinsic silicon crystal acts approximately as …… A piece of copper wire A conductor A battery An insulator 16 / 25 Category: Semiconductor diode (PN junction) 16. A semiconductor has generally ……………… valence electrons. 2 4 3 6 17 / 25 Category: Semiconductor diode (PN junction) 17. 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 18 / 25 Category: Semiconductor diode (PN junction) 18. At absolute temperature, an intrinsic semiconductor has ………. No holes or free electrons Many holes A few free electrons Many free electrons 19 / 25 Category: Semiconductor diode (PN junction) 19. The addition of trivalent impurity to a semiconductor creates many …….. Valence electrons Holes Free electrons Bound electrons 20 / 25 Category: Semiconductor diode (PN junction) 20. A reverse biased pn junction has resistance of the order of KΩ MΩ Ω None of the above 21 / 25 Category: Semiconductor diode (PN junction) 21. Under normal conditions a diode conducts current when it is …………… reverse biased avalanched saturated forward biased 22 / 25 Category: Semiconductor diode (PN junction) 22. The most commonly used semiconductor is Sulphur Silicon Germanium Carbon 23 / 25 Category: Semiconductor diode (PN junction) 23. A pentavalent impurity has ………. Valence electrons 6 5 4 3 24 / 25 Category: Semiconductor diode (PN junction) 24. The forward voltage drop across a silicon diode is about 2.5 V 3 V 0.7 V 5 V 25 / 25 Category: Semiconductor diode (PN junction) 25. A forward biased pn junction diode has a resistance of the order of None of these KΩ MΩ Ω 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
