Mechanical Engineering - Heat Transfer, Refrigeration and Air Conditioning

31.
The coefficient of performance of a domestic refrigerator is __________ as compared to a domestic air-conditioner.
same
less
more
Answer: Option
Explanation:
No answer description is available. Let's discuss.

32.
The process of heat transfer from one particle of the body to another is called conduction, when the particles of the body
move actually
do not move actually
affect the intervening medium
does not affect the intervening medium
Answer: Option
Explanation:
No answer description is available. Let's discuss.

33.
The human body feels comfortable when the heat stored in the body is
positive
negative
zero
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.

34.
A Bell Coleman refrigerator working on dense air system as compared to open air system, for the same range of temperature, results in __________ power per tonne of refrigeration.
same
lower
higher
Answer: Option
Explanation:
No answer description is available. Let's discuss.

35.
The amount of heat flow through a body by conduction is
directly proportional to the surface area of the body
directly proportional to the temperature difference on the two faces of the body
inversely proportional to the thickness of the body
all of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.