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