Heat Transfer,Refrigeration and Air Conditioning MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Heat Transfer,Refrigeration and Air Conditioning, a fundamental topic in the field of Mechanical 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,Refrigeration and Air Conditioning 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,Refrigeration and Air Conditioning mcq questions that explore various aspects of Heat Transfer,Refrigeration and Air Conditioning problems. Each MCQ is crafted to challenge your understanding of Heat Transfer,Refrigeration and Air Conditioning principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Mechanical Engineering tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Heat Transfer,Refrigeration and Air Conditioning MCQs are your pathway to success in mastering this essential Mechanical 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,Refrigeration and Air Conditioning. 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,Refrigeration and Air Conditioning knowledge to the test? Let's get started with our carefully curated MCQs!

Heat Transfer,Refrigeration and Air Conditioning MCQs | Page 3 of 40

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Q21.
The wet bulb temperature lines, on the psychrometric chart, are curved lines.
Discuss
Answer: (b).False
Q22.
The sensible heat factor during cooling and dehumidification process is given by (where h1 = Enthalpy of air entering the cooling coil, h2 = Enthalpy of air leaving the cooling coil, and hA = Enthalpy of air at the end of dehumidification process)
Discuss
Answer: (a).(hA - h2)/ (h1 - h2)
Discuss
Answer: (b).physical property of a substance
Q24.
The condition of refrigerant after leaving the compressor and before entering the condenser is superheated vapour.
Discuss
Answer: (a).Yes
Q25.
The total radiation from a black body per second per unit area is __________ fourth power of the absolute temperature. This statement is known as Stefan-Boltzmann law.
Discuss
Answer: (b).directly proportional to
Q26.
In a psychrometric process, the sensible heat added is 30 kJ/s and the latent heat added is 20 kJ/s. The sensible heat factor for the process will be
Discuss
Answer: (b).0.6
Q27.
The amount of radiation mainly depends upon the
Discuss
Answer: (d).all of these
Q28.
For ammonia refrigerating systems, the tubes of a shell and tube condenser are made of
Discuss
Answer: (c).steel
Q29.
The highest thermal diffusivity is of
Discuss
Answer: (b).lead
Q30.
While designing the refrigeration system of an aircraft, the prime consideration is that the
Discuss
Answer: (d).mass of the refrigeration equipment is low