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