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 9 of 40

Q81.
The water, alcohol and ammonia have same refrigerating effect at different altitudes.
Discuss
Answer: (b).No
Q82.
The automobile radiator is a heat exchanger of
Discuss
Answer: (c).cross flow type
Q83.
In mechanical refrigeration system, the refrigerant occurs as liquid between condenser and expansion valve.
Discuss
Answer: (a).True
Q84.
A heat pump working on a reversed Carnot cycle has a C.O.P. of 5. It works as a refrigerator taking 1 kW of work input. The refrigerating effect will be
Discuss
Answer: (d).4 kW
Q85.
For evaporators and condensers, for the given conditions, the logarithmic mean temperature difference (tm) for parallel flow is __________ that for counter flow.
Discuss
Answer: (a).equal to
Q86.
A vapour absorption refrigerator uses __________ as a refrigerant.
Discuss
Answer: (d).aqua-ammonia
Q87.
Thermal conductivity of air increases with rise in temperature.
Discuss
Answer: (a).Correct
Q88.
The material of pipe lines for a system using ammonia as a refrigerant should be copper.
Discuss
Answer: (b).No
Q89.
The wave length corresponding to the maximum energy is inversely proportional to the absolute temperature. This statement is called Planck's law.
Discuss
Answer: (b).No
Q90.
The sensible heat gain is due to the __________ difference between the fresh air and the air in space.
Discuss
Answer: (a).temperature