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 26 of 40

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Q251.
The by-pass factor (B. P. F.) in case of sensible heating of air is (Where td1 = Dry bulb temperature of air entering the heating coil, td2 = Dry bulb temperature of air leaving the heating coil, and td3 = Dry bulb temperature of heating coil)
Discuss
Answer: (b).(tdโ‚ƒ - tdโ‚‚)/(tdโ‚ƒ - tdโ‚)
Q252.
The refrigerant used for absorption refrigerators working on heat from solar collectors is a mixture of water and
Discuss
Answer: (c).lithium bromide
Q253.
In a black body, all radiations are rejected.
Discuss
Answer: (b).False
Q254.
Most air cooled condensers are designed to operate with a temperature difference of
Discuss
Answer: (c).14°C
Q255.
A Bell Coleman refrigerator working on dense air system as compared to open air system, for the same range of temperature, results in higher coefficient of performance.
Discuss
Answer: (a).Agree
Q256.
The ratio of surface convection resistance to the internal conduction resistance is known as
Discuss
Answer: (b).Biot number
Q257.
Relative humidity is given by (where pv = Partial pressure of water vapour, pb = Barometric pressure, ps = Pressure of saturated air, pd = Pressure at dry bulb temperature, pw = Saturation pressure corresponding to wet bulb temperature, and ฮผ = Degree of saturation)
Discuss
Answer: (b).ฮผ/[1 - (1 - ฮผ) (Ps/Pb)]
Discuss
Answer: (c).the ratio of the emissive power and absorptive power of all bodies is the same and is equal to the emissive power of a perfectly black body
Q259.
Dew point temperature is the temperature of air recorded by a thermometer, when the moisture present in it begins to condense.
Discuss
Answer: (a).Correct
Q260.
Planck's law holds good for all coloured bodies.
Discuss
Answer: (a).True