Heat Transfer Basics MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Heat Transfer Basics, a fundamental topic in the field of Basic Chemical Engineering. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Heat Transfer Basics MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Heat Transfer Basics mcq questions that explore various aspects of Heat Transfer Basics problems. Each MCQ is crafted to challenge your understanding of Heat Transfer Basics principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Basic Chemical Engineering tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Heat Transfer Basics MCQs are your pathway to success in mastering this essential Basic Chemical Engineering topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Heat Transfer Basics. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

So, are you ready to put your Heat Transfer Basics knowledge to the test? Let's get started with our carefully curated MCQs!

Heat Transfer Basics MCQs | Page 37 of 53

Discover more Topics under Basic Chemical Engineering

Q361.
Removal of __________ heat is involved in the condensation of a vapor under saturated conditions.

a.

super

b.

sensible

c.

latent

d.

both(b) & (c)

Discuss
Answer: (b).sensible
Q362.
In a shell and tube heat exchanger, putting a longitudinal baffle across the shell, forces the shell side fluid to pass __________ through the heat exchanger.

a.

once

b.

twice

c.

thrice

d.

four times

Discuss
Answer: (b).twice
Q363.
When the ratio of the Grashoff number and to the square of Reynolds number is one, the dominant mechanism of heat transfer is

a.

free convection

b.

entry length problem in laminar forced conduction (developing thermal boundary layer)

c.

mixed convection (both free and forced)

d.

forced convection

Discuss
Answer: (c).mixed convection (both free and forced)
Q364.
The purpose of providing bleed points in the evaporator is to

a.

admit the feed

b.

remove the product

c.

facilitate removal of non-condensable gases

d.

create vacuum

Discuss
Answer: (c).facilitate removal of non-condensable gases
Q365.
Water always boils when its

a.

temperature reaches 100° C.

b.

vapour pressure equals 76 cm of Hg.

c.

saturated vapour pressure equals the external pressure on its surface.

d.

saturated vapour pressure is less than the atmospheric pressure.

Discuss
Answer: (c).saturated vapour pressure equals the external pressure on its surface.
Q366.
A multiple effect evaporator as compared to a single effect evaporator of the same capacity has

a.

lower heat transfer area.

b.

lower steam economy.

c.

higher steam economy.

d.

higher solute concentration in the product.

Discuss
Answer: (c).higher steam economy.
Q367.
When does the heat generated by fluid friction becomes appreciable compared to the heat transferred between the fluids ?

a.

At high fluid velocity

b.

At low velocity

c.

When fluid flows past a smooth surface

d.

None of these

Discuss
Answer: (a).At high fluid velocity
Q368.
The Sieder-Tate correlation for heat transfer in turbulent flow in pipe gives Nu ฮฑ Re^0.8, where, Nu is the Nusselt number and Re is the Reynolds number for the flow. Assuming that this relation is valid, the heat transfer co-efficient varies with the pipe diameter (D) as

a.

(D)^-1.8

b.

(D)^-0.2

c.

(D)^0.2

d.

(D)^1.8

Discuss
Answer: (b).(D)^-0.2
Q369.
A long iron rod initially at a temperature of 20°C has one end dipped in boiling water (100°C) at time, t = 0. The curved surface of the rod is insulated so that heat conduction is one dimensional in the axial direction. The temperature at a distance 100 mm from the dipped end becomes 40°C at time, t = 200 s. The same temperature is achieved at a distance of 200 mm from the dipped end at time

a.

t = 283 s

b.

t = 356 s

c.

t = 400 s

d.

t = 800 s

Discuss
Answer: (d).t = 800 s
Q370.
LMTD for evaporators & condensers for a given terminal parameters & set of conditions for counterflow is equal to that for parallel flow. In such heat exchangers, with one of the fluids condensing or evaporating, the surface area required is the least in the __________ flow.

a.

parallel

b.

mixed

c.

counterflow

d.

same in either 'a', b' or 'c'

Discuss
Answer: (d).same in either 'a', b' or 'c'
Page 37 of 53