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