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 15 of 40

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Q141.
The ratio of emissive power of a body to the emissive power of a perfectly black body is called emissivity.
Discuss
Answer: (a).Agree
Discuss
Answer: (a).degree of superheat at exit from the evaporator
Q143.
In a vapour compression system, the condition of refrigerant before entering the expansion or throttle valve is
Discuss
Answer: (a).high pressure saturated liquid
Q144.
The freezing point of R-12 is
Discuss
Answer: (d).-135.8°C
Discuss
Answer: (a).superheated vapour refrigerant
Q146.
The unit of thermal diffusivity is
Discuss
Answer: (c).m²/h
Discuss
Answer: (c).between the saturated liquid line and saturated vapour line
Q148.
The minimum temperature to which water can be cooled in a cooling tower is
Discuss
Answer: (b).wet bulb temperature of air
Q149.
The index which corelates the combined effects of air temperature, relative humidity and air velocity on the human body, is known as
Discuss
Answer: (b).effective temperature
Q150.
The ratio of Nusselt number and the product of Reynold's number and Prandtl number is equal to
Discuss
Answer: (a).Stanton number