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