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!

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Heat Transfer Basics MCQs | Page 21 of 53

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Q201.
Radiation heat transfer rates does not depend upon the

a.

type of absorbing surface.

b.

distance between the heat source and the object receiving the heat.

c.

surface area and temperature of the heat source.

d.

none of these.

Discuss
Answer: (d).none of these.
Q202.
Which of the following is correct ?

a.

Rate = Driving force x Resistance

b.

Driving force = Rate x Resistance

c.

Resistance = Driving force x Rate

d.

Rate = Resistance/Driving force

Discuss
Answer: (b).Driving force = Rate x Resistance
Q203.
Convective heat transfer, in which heat is transferred by movement of warmed matter is described by

a.

Fourier's law

b.

Newton's law of cooling

c.

Fick's law

d.

none of these

Discuss
Answer: (b).Newton's law of cooling
Q204.
As the difference between the wall temperature and bulk temperature increases, the boiling heat transfer co-efficient

a.

continues to increase.

b.

continues to decrease.

c.

goes through a minimum.

d.

goes through a maximum.

Discuss
Answer: (c).goes through a minimum.
Q205.
Heat transfer rate per unit area is called

a.

thermal conductivity

b.

heat flux

c.

heat transfer co-efficient

d.

thermal diffusivity

Discuss
Answer: (b).heat flux
Q206.
Log mean temperature difference (LMTD) cannot be used, if

a.

heat transfer co-efficient over the entire heat exchanger is not constant.

b.

there exists an unsteady state.

c.

the heat capacity is not constant and there is a phase change.

d.

none of these.

Discuss
Answer: (d).none of these.
Q207.
The critical radius 'r' of insulation on a pipe is given by

a.

r = 2k/h

b.

r = k/h

c.

r = k/2h

d.

r = h/k

Discuss
Answer: (b).r = k/h
Q208.
As per Kirchoffs law, the ratio of the total radiating power to the absorptivity of a body depends on the

a.

temperature of the body only.

b.

wavelength of monochromatic radiation.

c.

both (a) and (b).

d.

nature of material of body.

Discuss
Answer: (a).temperature of the body only.
Q209.
If the baffle spacing in a shell and tube heat exchanger increases, then the Reynolds number of the shell side fluid

a.

remains unchanged.

b.

increases.

c.

increases or decreases depending on number of shell passes.

d.

decreases.

Discuss
Answer: (d).decreases.
Q210.
The heat transfer by radiation from a mild steel surface is to be reduced by reducing the emissivity of the surface. This can be best achieved by

a.

painting the surface black.

b.

painting the surface white (with aluminium paint).

c.

giving the surface a mirror finish.

d.

roughening the surface.

Discuss
Answer: (b).painting the surface white (with aluminium paint).
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