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