Electrical Engineering MCQs

Page No. 101

The minority carrier concentration is largely a function of_____________?


a forward biasing voltage

✖


breverse biasing voltage

✖


ctemperature

✓


dthe amount of doping

✖


View Answer temperature

The current due to electron flow in conduction band is the hole current in valence band?


aequal to

✖


bless than

✖


c greater than

✓


d any of the above

✖


View Answer greater than

For germanium the forbidden energy gap is_______________?


a0.15 eV

✖


b0.25 eV

✖


c0.5eV

✖


d0.7eV

✓


View Answer 0.7eV

is an element used in semiconductors whose atoms have three valence electrons?


a An acceptor

✓


b A donor

✖


cGermanium

✖


dSilicon

✖


View Answer An acceptor

The carbon percentage is least in__________________?


alow carbon steel

✖


bwrought iron

✓


ccast iron

✖


dmalleable iron

✖


View Answer wrought iron

The conductivity of an extrinsic semiconductor with temperature________________?


adecreases

✖


b increases

✖


cremains constant

✓


dNone of them

✖


View Answer remains constant

For a hole which of the following statements is incorrect ?


aHoles can exist in certain semiconductors only

✖


b Holes can exist in any material including conductors

✓


c Holes may constitute an electric current

✖


dHoles can be considered as a net positive charge

✖



For a particular material the Hall coefficient was found to be zero. The material is______________?


ainsulator

✖


bmetal

✓


cintrinsic semiconductor

✖


dnone of the above

✖


View Answer metal

Superconducting metal in super conducting state has relative permeability of________________? 0


azero

✓


bone

✖


cnegative

✖


dmore than one

✖


View Answer zero

Which of the following factors affect resistivity of metals ?


a Age hardening

✖


b Alloying

✖


cTemperature

✖


dAll of the above

✓


View Answer All of the above

Goto Page No.

Page 101 of 366

Alphabetical MCQs Categories
—

Here below You find all kind of categories of MCQs in alphabetical order.


"Comprehensive Collection of MCQs: Alphabetically Organized by Subject"
—

"Discover an extensive collection of multiple-choice questions (MCQs) neatly categorized by subject from A to Z. This resource is designed for anyone eager to explore various topics in a straightforward and organized manner. Whether you're a student preparing for exams, an educator seeking supplementary materials, or simply curious about different subjects, this compilation offers a convenient way to learn and assess your knowledge. With questions arranged alphabetically, navigation is effortless, allowing you to delve into subjects of interest at your own pace. Engage, learn, and expand your understanding with this accessible and comprehensive repository of MCQs!"


BolPakistan

bolpakistan.com.pk includes Job Mcqs and Pak Mcqs is the Top Largest Mcqs Forum in World, in which you can read Mcqs of All Subjects, PPSC test preparation, FPSC, NTS and PPSC PAST PAPERS, PPSC PAST MCQS. A Collection of Repeated MCQs for JOBs seekers.

Copyright © 2024, Designed & Developed by BolPakistan