Electrical Engineering MCQs

Page No. 88

Which of these is the best description for a Zener diode ?


a It is a diode


b It is a constant current device


c It is a constant-voltage device


dIt works in the forward region



If the load resistance decreases in a Zener regulator, then Zener current ______________?


aDecreases


b Stays the same


cIncreases


dNone of the above


View Answer Decreases

A Zener diode______________?


a Is a battery


bActs like a battery in the breakdown region


c Has a barrier potential of 1 V


dIs forward biased



A 30 V Zener will have depletion layer width_______________ that of 10 V Zener?


aMore than


b Less than


cEqual to


dNone of the above


View Answer more than

What is true about the breakdown voltage in a Zener diode ?


aIt decreases when load current increases


bIt destroys the diode


cIt equals current times the resistance


dIt is approximately constant



A 5 mA changes in Zener current produces a 50 mA change in Zener voltage. What is the Zener impedance ?


a1 O


b1 O


c 100 O


d10 O


View Answer 10 O

The current in a Zener diode is limited by _______________?


aExternal resistance


bPower dissipation


cBoth (A) and (B)


dNone of the above


View Answer Both (A) and (B)

A certain regulator has a no-load voltage of 6 V and a full-load output of 5.82 V. What is the load regulation ?


a 09%


b 87 %


c72 %


dNone of the above


View Answer 09%

A Zener diode that has very narrow depletion layer will breakdown by____________ mechanism?


aAvalanche


b Zener


cBoth avalanche and Zener


d None of the above


View Answer Zener

A Zener voltage regulator is used for ____________ load currents?


aHigh


bVery high


cModerate


dSmall


View Answer Small

Goto Page No.

Page 88 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