Definitions and Basic Concepts MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Definitions and Basic Concepts, a fundamental topic in the field of Heat Transfer. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Definitions and Basic Concepts 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 Definitions and Basic Concepts mcq questions that explore various aspects of Definitions and Basic Concepts problems. Each MCQ is crafted to challenge your understanding of Definitions and Basic Concepts principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Heat Transfer tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Definitions and Basic Concepts MCQs are your pathway to success in mastering this essential Heat Transfer topic.

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Definitions and Basic Concepts MCQs | Page 2 of 3

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Q11.
Regarding one dimensional heat transfer, choose the correct statement

a.

Steady- f (x), Unsteady- f (x, t)

b.

Steady- f (x, t), Unsteady- f (x)

c.

Steady- f (x, y, t), Unsteady- f (x)

d.

Steady- f (y, z), Unsteady- f (y)

Discuss
Answer: (d).Steady- f (y, z), Unsteady- f (y)
Q12.
Which statement is true regarding steady state condition?

a.

There is a variation in temperature in the course of time

b.

Heat exchange is constant

c.

It is a function of space and time coordinates

d.

Internal energy of the system changes

Discuss
Answer: (b).Heat exchange is constant
Q13.
Which of the following is an example of steady state heat transfer?

a.

Boilers and turbines

b.

Cooling of I.C engine

c.

Chilling effect of cold wind on a warm body

d.

Electric bulb cools down by the surrounding atmosphere

Discuss
Answer: (d).Electric bulb cools down by the surrounding atmosphere
Q14.
Heat transfer in a long, hollow cylinder which is maintained at uniform but different temperatures on its inner and outer surfaces may be assumed to be taking place in which direction?

a.

Axial only

b.

Unpredictable

c.

Radial only

d.

No heat transfer takes place

Discuss
Answer: (c).Radial only
Q15.
Heat transfer takes place according to which law?

a.

Newton’s law of cooling

b.

Second law of thermodynamics

c.

Newton’s second law of motion

d.

First law of thermodynamics

Discuss
Answer: (b).Second law of thermodynamics
Q16.
Heat transfer takes place in liquids and gases is essentially due to

a.

Radiation

b.

Conduction

c.

Convection

d.

Conduction as well as convection

Discuss
Answer: (c).Convection
Q17.
The appropriate rate equation for convective heat transfer between a surface and adjacent fluid is prescribed by

a.

Newton’s first law

b.

Wein’s displacement law

c.

Kirchhoff’s law

d.

Newton’s law of cooling

Discuss
Answer: (d).Newton’s law of cooling
Q18.
Identify the wrong statement.

a.

The process of heat transfer is an irreversible process

b.

For heat exchange, a temperature gradient must exist

c.

A material medium is not necessary for heat transmission

d.

Heat flow doesn’t depends on temperature

Discuss
Answer: (d).Heat flow doesn’t depends on temperature
Q19.
During a cold winter season, a person prefers to sit near a fire. Which of the following modes of heat transfer provides him the maximum heat?

a.

Conduction from the fire

b.

If it is near the fire, convection sounds good

c.

Convection and radiation together

d.

Radiation will provide quick warmth

Discuss
Answer: (d).Radiation will provide quick warmth
Q20.
Most unsteady heat flow occurs

a.

Through the walls of the refrigerator

b.

During annealing of castings

c.

Through the walls of the furnace

d.

Through lagged pipe carrying steam

Discuss
Answer: (b).During annealing of castings
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