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