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) A pentavalent impurity has ………. Valence electrons 6 5 4 3 2 / 25 Category: Semiconductor diode (PN junction) In an intrinsic semiconductor, the number of free electrons ……… Is greater than the number of holes None of the above Is less than the number of holes Equals the number of holes 3 / 25 Category: Semiconductor diode (PN junction) The forward voltage drop across a silicon diode is about 3 V 2.5 V 0.7 V 5 V 4 / 25 Category: Semiconductor diode (PN junction) With forward bias to a pn junction , the width of depletion layer ……… None of the above Increases Decreases Remains the same 5 / 25 Category: Semiconductor diode (PN junction) in n-type semiconductors the minority current carriers are Protons The holes Valence electrons Free electrons 6 / 25 Category: Semiconductor diode (PN junction) In a semiconductor, current conduction is due to …….. Only free electrons None of the above Only holes Holes and free electrons 7 / 25 Category: Semiconductor diode (PN junction) The most commonly used semiconductor is Carbon Germanium Sulphur Silicon 8 / 25 Category: Semiconductor diode (PN junction) A trivalent impurity has ….. valence electrons 6 5 4 3 9 / 25 Category: Semiconductor diode (PN junction) A semiconductor is formed by ……… bonds. None of the above Co-ordinate Electrovalent Covalent 10 / 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 11 / 25 Category: Semiconductor diode (PN junction) What is the dc output voltage of an unfiltered half wave rectifier whose peak output voltage 9.8v 3.1v 19.6v 6.23v 9.8v 12 / 25 Category: Semiconductor diode (PN junction) When a pure semiconductor is heated, its resistance ………….. Can’t say Goes down Remains the same Goes up 13 / 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 14 / 25 Category: Semiconductor diode (PN junction) At absolute temperature, an intrinsic semiconductor has ………. A few free electrons No holes or free electrons Many holes Many free electrons 15 / 25 Category: Semiconductor diode (PN junction) A reverse biased pn junction has resistance of the order of None of the above KΩ Ω MΩ 16 / 25 Category: Semiconductor diode (PN junction) The leakage current in a pn junction is of the order of µA A mA kA 17 / 25 Category: Semiconductor diode (PN junction) A semiconductor has generally ……………… valence electrons. 3 2 6 4 18 / 25 Category: Semiconductor diode (PN junction) A forward biased pn junction diode has a resistance of the order of MΩ KΩ None of these Ω 19 / 25 Category: Semiconductor diode (PN junction) A hole in a semiconductor is defined as ……………. A free proton A free neutron The incomplete part of an electron pair bond A free electron 20 / 25 Category: Semiconductor diode (PN junction) The addition of trivalent impurity to a semiconductor creates many …….. Valence electrons Bound electrons Holes Free electrons 21 / 25 Category: Semiconductor diode (PN junction) A PN junction acts as a ………. Unidirectional switch None of the above Bidirectional switch Controlled switch 22 / 25 Category: Semiconductor diode (PN junction) The leakage current across a pn junction is due to ………….. Junction capacitance Minority carriers None of the above Majority carriers 23 / 25 Category: Semiconductor diode (PN junction) A semiconductor has ………… temperature coefficient of resistance. Positive Zero None of the above Negative 24 / 25 Category: Semiconductor diode (PN junction) Under normal conditions a diode conducts current when it is …………… avalanched reverse biased forward biased saturated 25 / 25 Category: Semiconductor diode (PN junction) To a first approximation of a forward-biased diode is treated like a Lose switch in series with a small resistance and a battery 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 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
