Chemical Engineering MCQs

Page No. 380

A stable system is the one___________________?


aFor which the output response is bounded for all bounded input

✓


bWhich exhibits an unbounded response to a bounded input

✖


cWhich satisfies the conditions for a servo problem

✖


dNone of these

✖



Routh test_________________?


aCriterion provides information about the actual location of roots

✖


bCannot be used to test the stability of a control system containing transportation lag

✓


cCriterion is not applicable to systems with polynomial characteristic equation

✖


dCannot determine as to how many roots of the characteristics equation have positive real roots

✖



Thermodynamic Celsius scale of temperature measurement is________________?


aDefined on the basis of melting point of ice and evaporation temperature of water vapor

✖


bDefined on the basis of melting point of ice and condensation temperature of water vapor

✖


cHaving an interval of 100° between ice point to steam point

✖


dBoth B. and C.

✓


View Answer Both B. and C.

Bourdon gauges are used for measuring pressure (kg/cm2) ?


a< atmospheric

✖


b> 2 (gauge)

✓


c10 (absolute)

✖


dNone of these

✖


View Answer > 2 (gauge)

Radiation pyrometers as compared to thermocouples____________________?


aHas a slower speed of response

✖


bCan measure higher temperature

✓


cCan’t measure the temperature of moving objects

✖


dIs more affected by corrosive atmosphere

✖



Number of poles in a system with transfer function 1/(s2 + 2s2 + 1) is ________________?


a2

✖


b5

✖


c3

✓


d1

✖


View Answer 3

Thermocouple in a thermal well behaves as a true ________________?


aFirst order system

✖


bSecond order system (overdamped)

✖


cMultiple first order system

✓


dSecond order system (underdamped)

✖



Stability of a control system containing a transportation lag can be best analysed by_______________?


aRouth test

✖


bRoot locus methods

✖


cFrequency response methods

✓


dNone of these

✖



Accurate temperature measurement performance of a radiation pyrometer cannot be affected, if the ?


aEnhancement or attenuation of radiation occurs in the sighting path

✖


bObject and surrounding are at almost the same temperature

✓


cObject has varying emissivity

✖


dObject is transparent

✖



The open loop transfer function of a process is K [{(s + 1) (s + 4)}/{(s + 2) (s + 3)}]. In the root locus diagram, the poles will be at ___________________?


a-1, -4

✖


b1, 4

✖


c-2, -3

✓


d2, 3

✖


View Answer -2, -3

Goto Page No.

Page 380 of 843

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