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 17 of 40

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Q161.
Sulphur dioxide has the lowest boiling point.
Discuss
Answer: (b).No
Q162.
For a given dry bulb temperature, as the relative humidity __________ the wet bulb temperature will increase.
Discuss
Answer: (b).decreases
Q163.
The lowest thermal diffusivity is of
Discuss
Answer: (d).rubber
Q164.
A low wet bulb temperature indicates very __________ humidity.
Discuss
Answer: (a).low
Q165.
In counter-current flow heat exchanger, the logarithmic temperature difference between the fluids is __________ as compared to parallel flow heat exchanger.
Discuss
Answer: (c).greater
Discuss
Answer: (d).these react with ozone layer
Q167.
When the lower temperature of a refrigerating machine is fixed, then the coefficient of performance can be improved by
Discuss
Answer: (d).lowering the higher temperature
Q168.
The refrigerant carbon dioxide is not widely used because of its __________ power require ments per tonne of refrigeration and high operating pressures.
Discuss
Answer: (b).high
Discuss
Answer: (a).decrease in fin spacing and increase in number of rows
Q170.
For unsaturated air, the dew point temperature is __________ wet bulb temperature.
Discuss
Answer: (b).less than