Mechanical Engineering - Heat Transfer, Refrigeration and Air Conditioning

31.
The power per tonne of refrigeration is
3.5/C.O.P.
C.O.P/3.5
3.5 x C.O.P.
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.

32.
The process of heat transfer from one particle of the fluid to another by the actual movement of the fluid particles due to difference of density caused by temperature of the particle is known as
conduction
free convection
forced convection
radiation
Answer: Option
Explanation:
No answer description is available. Let's discuss.

33.
The thermostatic expansion valve is also called
constant pressure valve
constant temperature valve
constant superheat valve
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.

34.
In figure shown, E is a heat engine with efficiency of 0.4 and R is a refrigerator. It is given that Q2 + Q4 = 3Q1. The C.O.P. of the refrigerator is
2.5
3.0
4.0
5.0
Answer: Option
Explanation:
No answer description is available. Let's discuss.

35.
The specific humidity during cooling and dehumidification
remains constant
increases
decreases
Answer: Option
Explanation:
No answer description is available. Let's discuss.