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) Under normal conditions a diode conducts current when it is …………… forward biased reverse biased saturated avalanched 2 / 25 Category: Semiconductor diode (PN junction) A semiconductor has ………… temperature coefficient of resistance. None of the above Zero Positive Negative 3 / 25 Category: Semiconductor diode (PN junction) In a semiconductor, current conduction is due to …….. None of the above Holes and free electrons Only free electrons Only holes 4 / 25 Category: Semiconductor diode (PN junction) The most commonly used semiconductor is Carbon Silicon Germanium Sulphur 5 / 25 Category: Semiconductor diode (PN junction) A reverse bias pn junction has ………… Very narrow depletion layer Large current flow Almost no current Very low resistance 6 / 25 Category: Semiconductor diode (PN junction) A pentavalent impurity has ………. Valence electrons 6 5 4 3 7 / 25 Category: Semiconductor diode (PN junction) When a pure semiconductor is heated, its resistance ………….. Remains the same Goes down Can’t say Goes up 8 / 25 Category: Semiconductor diode (PN junction) The leakage current in a pn junction is of the order of µA A kA mA 9 / 25 Category: Semiconductor diode (PN junction) In an intrinsic semiconductor, the number of free electrons ……… None of the above Is greater than the number of holes Is less than the number of holes Equals the number of holes 10 / 25 Category: Semiconductor diode (PN junction) The addition of trivalent impurity to a semiconductor creates many …….. Holes Bound electrons Valence electrons Free electrons 11 / 25 Category: Semiconductor diode (PN junction) A reverse biased pn junction has resistance of the order of None of the above KΩ Ω MΩ 12 / 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 3.1v 9.8v 19.6v 13 / 25 Category: Semiconductor diode (PN junction) The forward voltage drop across a silicon diode is about 0.7 V 5 V 3 V 2.5 V 14 / 25 Category: Semiconductor diode (PN junction) A semiconductor has generally ……………… valence electrons. 6 2 4 3 15 / 25 Category: Semiconductor diode (PN junction) A forward biased pn junction diode has a resistance of the order of Ω None of these MΩ KΩ 16 / 25 Category: Semiconductor diode (PN junction) With forward bias to a pn junction , the width of depletion layer ……… None of the above Decreases Increases Remains the same 17 / 25 Category: Semiconductor diode (PN junction) 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 18 / 25 Category: Semiconductor diode (PN junction) A hole in a semiconductor is defined as ……………. The incomplete part of an electron pair bond A free neutron A free proton A free electron 19 / 25 Category: Semiconductor diode (PN junction) At room temperature, an intrinsic silicon crystal acts approximately as …… A battery An insulator A piece of copper wire A conductor 20 / 25 Category: Semiconductor diode (PN junction) The leakage current across a pn junction is due to ………….. None of the above Minority carriers Junction capacitance Majority carriers 21 / 25 Category: Semiconductor diode (PN junction) in n-type semiconductors the minority current carriers are The holes Protons Free electrons Valence electrons 22 / 25 Category: Semiconductor diode (PN junction) At absolute temperature, an intrinsic semiconductor has ………. No holes or free electrons A few free electrons Many free electrons Many holes 23 / 25 Category: Semiconductor diode (PN junction) A PN junction acts as a ………. None of the above Bidirectional switch Controlled switch Unidirectional switch 24 / 25 Category: Semiconductor diode (PN junction) A trivalent impurity has ….. valence electrons 4 6 3 5 25 / 25 Category: Semiconductor diode (PN junction) A semiconductor is formed by ……… bonds. Co-ordinate Electrovalent Covalent None of the above 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
