Electrical Engineering MCQs

Page No. 352

Between the incoming and outgoing devices in voltage commutation


aLarge overlapping takes place


b Small overlapping operation


cNo overlapping operation


dNone of these



The average value of the output voltage in a step – down dc chopper is given by__________?


aV 0 = V s


bV 0 = D V s


cV 0 = V s / D


dV 0 = V s / ( 1 – D )


View Answer V 0 = D V s

Choppers is a_______________?


aAC – DC converters


bAC – AC converters


cDC – AC converters


dDC – DC converters


View Answer DC – DC converters

In radiative coupling, the emitter radiation field_____________?


a Decays as 1 / R, where R is the separation distance between the emitter and the receptor


bDecays as R, where R is the separation distance between the emitter and the receptor


cDecays as 1 / 2 R, where R is the separation distance between the emitter and the receptor


d Decays as 2R, where R is the separation distance between the emitter and the receptor



In BJT, switching losses occurs___________?


aOnly at turn – on


bOnly at turn – off


cBoth at turn on and off


dNone of these



In BJT, the forward biased base emitter junction inject holes from base to emitter, the holes_______?


a Do not contribute to the collector current


bResult in net current flow component into the base


cContribute to the collector current


dOnly (a) and (b)


View Answer Only (a) and (b)

In EMC signal, the source delivers maximum power to the input of transmission line when the transmission line input impedance


a Is equal to the source resistance


bGreater than the source resistance


cSmaller than the source resistance


dNone of these



As the breakdown voltage reached, the DIAC exhibits?


aNegative resistance characteristics


bGoes into avalanche condition


cVoltage drop snaps back


dAll of these


View Answer All of these

For swept frequency measurements, the input impedance of the mismatched transmission line would vary with frequency as the electrical length of the transmission line would


aDecrease with frequency


bRemains same with change in frequency


cIncrease with frequency


d Either A. or B.



DIAC are specifically designed to trigger______________?


aTRIAC


bSCR


cGTO


d Only (a) and (b)


View Answer Only (a) and (b)

Goto Page No.

Page 352 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