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.

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Heat Transfer Basics MCQs | Page 10 of 53

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Q91.
Heat transfer by conduction results due to the transfer of free electrons, kinetic energy & vibrational energy from one molecule to another. Conduction heat transfer can not take place

a.

between two bodies in physical contact with each other.

b.

between two bodies not in physical contact with each other.

c.

from one part of a body to the another part of the same body.

d.

both 'b' & 'c'

Discuss
Answer: (b).between two bodies not in physical contact with each other.
Q92.
The dimensionless group in mass transfer that is equivalent to Prandtl number in heat transfer is

a.

Nusselt number.

b.

Sherwood number.

c.

Schmidt number.

d.

Stanton number.

Discuss
Answer: (c).Schmidt number.
Q93.
Finned tube heat exchangers

a.

give larger area per tube.

b.

use metal fins of low thermal conductivity.

c.

facilitate very large temperature drop through tube wall.

d.

are used for smaller heat load.

Discuss
Answer: (a).give larger area per tube.
Q94.
The absorptivity of a grey body at a given temperature __________ with increasing wavelength of radiation.

a.

increases

b.

decreases

c.

remains constant

d.

may increase or decrease ; depends on the material

Discuss
Answer: (d).may increase or decrease ; depends on the material
Q95.
A perfect black body is a perfect __________ of radiation.

a.

absorber

b.

emitter

c.

both (a) & (b)

d.

neither (a) nor (b)

Discuss
Answer: (c).both (a) & (b)
Q96.
In case of parallel flow heat exchanger, the lowest temperature theoretically attainable by the hot fluid is __________ the outlet temperature of the cold fluid.

a.

equal to

b.

more than

c.

less than

d.

either more or less than (depending upon the fluid)

Discuss
Answer: (a).equal to
Q97.
An equipment which converts the latent or sensible heat of one fluid into the latent heat of vaporisation of another, is called a

a.

boiler

b.

heat exchanger

c.

recuperator

d.

regenerator

Discuss
Answer: (b).heat exchanger
Q98.
Which of the following is directly concerned with the heat transfer ?

a.

Strouhal number

b.

Sherwood number

c.

Euler number

d.

Grashoff number

Discuss
Answer: (d).Grashoff number
Q99.
Pick out the wrong statement:

a.

With change in temperature, the radiant energy emitted by a black body remains unchanged.

b.

Absorptivity of a body approaches unity in case of diffuse reflection.

c.

Absorptivity of a perfectly black body is unity.

d.

Value of Stefan-Boltzman constant is 4.876 x 10⁻⁸ KCal/m².hr.°K⁴.

Discuss
Answer: (a).With change in temperature, the radiant energy emitted by a black body remains unchanged.
Q100.
Heat transfer by __________ may not necessarily require the presence of a medium.

a.

conduction

b.

natural convection

c.

forced convection

d.

radiation

Discuss
Answer: (d).radiation
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