Chemical Engineering MCQs

Page No. 428

Vibrations in the tubes of a shell and tube heat exchanger is induced due to the _________________?


aFlow of fluid on the tube and shell sides

✖


bOscillations in the flow of shell/tube sides fluid

✖


cVibrations transmitted through piping and/or supports due to external reasons

✖


dAll A., B. and C.

✓


View Answer All A., B. and C.

What is the steam economy in case of a single effect evaporator system ?


a1

✖


b> 1

✖


c< 1

✓


d0.1

✖


View Answer < 1

For turbulent flow in a tube, the heat transfer co-efficient is obtained from the Dittus- Boelter correlation. If the tube diameter is halved and the flow rate is doubled, then the heat transfer co-efficient will change by a factor of________________?


a1

✖


b1.74

✖


c6.1

✓


d37

✖


View Answer 6.1

Baffles in the shell side of a shell and tube heat exchanger ?


aIncrease the cross-section of the shell side liquid

✖


bForce the liquid to flow parallel to the bank

✖


cIncrease the shell side heat transfer co-efficient

✓


dDecrease the shell side heat transfer co-efficient

✖



____________ chart is known as transient heat conduction chart?


aDirhing’s

✓


bHeisler’s

✖


cMollier’s

✖


dCox

✖


View Answer Dirhing’s

Controlling heat transfer film co-efficient is the one, which offers ______________ resistance to heat transfer?


aNo

✖


bThe least

✖


cThe largest

✓


dLower

✖


View Answer The largest

Which of the following is concerned with both heat and mass transfer ?


aLewis relationship

✓


bNusselt number

✖


cKutateladze number

✖


dFroude number

✖


View Answer Lewis relationship

Duhring‟s rule is important in solving problems on__________________?


aDistillation

✖


bCrystallisation

✖


cEvaporation

✓


dHumidification

✖


View Answer Evaporation

Heat transfer by radiation between two bodies at T1 & T2 and in an ambient temperature of Ta°C depends on_____________?


aT1 – T2

✖


bT1 – Ta

✖


cT2 – Ta

✖


dNone of these

✓


View Answer None of these

The film thickness for laminar film condensation on vertical surface _____________ from top to bottom?


aCumulatively increases

✓


bCumulatively decreases

✖


cRemain constant

✖


dAnd the surface conductance increase

✖



Goto Page No.

Page 428 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