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