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 21 of 40

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Q201.
A grey body is one whose absorptivity does not vary with temperature and wave length of the incident ray.
Discuss
Answer: (a).True
Q202.
The wet bulb temperature during sensible cooling of air
Discuss
Answer: (c).decreases
Q203.
In absorption vapour systems, the refrigerant widely used is R-12.
Discuss
Answer: (b).Incorrect
Q204.
Hydrogen is used in electrolux refrigeration system so as to __________ the rate of evaporation of the liquid ammonia passing through the evaporator.
Discuss
Answer: (c).increase
Discuss
Answer: (a).it is not affected by the moisture present in the air
Q206.
In a spray washing system, if the temperature of water is higher than the dry bulb temperature of entering air, then the air is
Discuss
Answer: (b).heated and humidified
Q207.
A valve which maintains a constant degree of superheat at the end of the evaporator coil, is called
Discuss
Answer: (d).low side float valve
Q208.
The atmospheric air at dry bulb temperature of 15°C enters a heating coil maintained at 40°C. The air leaves the heating coil at 25°C. The by-pass factor of the heating coil is
Discuss
Answer: (c).0.6
Q209.
An infinite parallel planes with emissivities e1 and e2, the interchange factor for radiation from surface 1 to surface 2 is given by
Discuss
Answer: (a).(eโ‚ + eโ‚‚)/ eโ‚ + eโ‚‚ - eโ‚eโ‚‚
Discuss
Answer: (c).it is miscible with oil over large range of temperatures