Electrical Engineering MCQs

Page No. 122

Three identical amplifiers with each one having a voltage gain of 50,input resistance of 1KΩ & output resistance of 250 ,are cascaded.The open circuit voltage gain of combined amplifier is_________?


a49dB


b51dB


c 98dB


d102dB


View Answer 98dB

An amplifier using an opamp with slew rate SR=1v/µsec has a gain of 40db.if this amplifier has to faithfully amplify sinusoidal signals from dc to 20 KHz without introducing any slew-rate induced distortion, then the input signal level must not exceed________?


a795mV


b 395mV


c795 mV


d 39.5mV


View Answer 795 mV

An npn BJT has gm=38mA/v, cµ =10¯14 F, cπ =10¯13F and DC current gain β0=90.For this transistor fT & fβ are________?


afT =1.64 x 108 Hz & fβ = 1.47 x 1010 Hz.


bfT =1.47 x 1010 Hz & fβ = 1.64 x 108 Hz


cfT =1.33 x 1012 Hz & fβ = 1.47 x 1010 Hz


dfT =1.47 x 1010 Hz & fβ = 1.33 x 1012 Hz



The MOSFET switch in its on-state may be considered equivalent to_____________?


aresistor


b inductor


ccapacitor


dbattery


View Answer capacitor

. If =0.98 ,Ico=6µA and Iβ=100µA for a transistor,then the value of Ic will be______?


a2.3mA


b3.2mA


c4.6 mA


d5.2mA


View Answer 5.2mA

In a common emitter, unbypassed resister provides___________?


avoltage shunt feedback


b current series feedback


cnegative voltage feedback


dpositive current feedback



A differential amplifier has a differential gain of 20,000 . CMRR=80 dB. The common mode gain is given by________?


a2


b1


c1/2


d0


View Answer 2

MOSFET can be used as a__________?


acurrent controlled capacitor


bvoltage controlled capacitor


ccurrent controlled inductor


dvoltage controlled inductors



Which of the following amplifier circuit using junction transistor has the best gain?


aCommon base


bCommon emitter


c Common collector


dAll have the same gain


View Answer Common emitter

The horizontal intercept of dc load line is the same as ideal____________?


a cut off point


bsaturation point


coperating point


dquasi saturation point


View Answer cut off point

Goto Page No.

Page 122 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