Mechanical Engineering - Heat Transfer, Refrigeration and Air Conditioning

26.
Which of the following represents a heat pump?
Answer: Option
Explanation:
No answer description is available. Let's discuss.

27.
In a psychrometric process, the sensible heat added is 30 kJ/s and the latent heat added is 20 kJ/s. The sensible heat factor for the process will be
0.3
0.6
0.67
1.5
Answer: Option
Explanation:
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28.
The amount of radiation mainly depends upon the
nature of the body
temperature of the body
type of surface of the body
all of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.

29.
For ammonia refrigerating systems, the tubes of a shell and tube condenser are made of
copper
aluminium
steel
brass
Answer: Option
Explanation:
No answer description is available. Let's discuss.

30.
The highest thermal diffusivity is of
iron
lead
concrete
wood
Answer: Option
Explanation:
No answer description is available. Let's discuss.