Heat Radiation MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Heat Radiation, 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 Heat Radiation 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 Radiation mcq questions that explore various aspects of Heat Radiation problems. Each MCQ is crafted to challenge your understanding of Heat Radiation 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 Heat Radiation MCQs are your pathway to success in mastering this essential Heat Transfer topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Heat Radiation. 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 Radiation knowledge to the test? Let's get started with our carefully curated MCQs!

Heat Radiation MCQs | Page 5 of 21

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Q41.
β€œSpatial distribution is also known as directional distribution”. Choose the correct option
Discuss
Answer: (a).True
Q42.
Thermal radiation strikes a surface which has a reflectivity of 0.55 and transmissivity of 0.032. A quantity known as flux is found out to be 95 W/m². Determine the rate of incident flux.
Discuss
Answer: (d).227.27 W/m²
Discuss
Answer: (a).3.9 * 10¯¹ to 7.8 * 10¯¹ micron meter
Q44.
What is the unit of coefficient of radiant heat transfer?
Discuss
Answer: (b).W/m² K
Q45.
Which of the following have a continuous spectrum?
Discuss
Answer: (d).Solids and liquids
Q46.
Which of the following is/are known as selective absorbers?
Discuss
Answer: (c).Gases and vapors
Q47.
Which layers participated in the process of thermal radiation through solids and liquids?
Discuss
Answer: (a).1 micron to 1 mm thick
Q48.
Some of the gases have low emissive power and absorptivity. They are considered practically diathermanous. Which of the following option is true?
Discuss
Answer: (b).Helium
Q49.
Consider a beam of monochromatic radiation at wavelength Ξ» that enters a layer of absorbing gas. As the beam passes through the gas layer, its intensity
Discuss
Answer: (a).Decreases
Q50.
Radiant energy with an intensity of 800 W/m² strikes a flat plate normally. The absorptivity is thrice the reflectivity and twice the transmissivity. Determine the rate of absorption
Discuss
Answer: (c).436.40 W/m²