Mechanical Engineering - Heat Transfer, Refrigeration and Air Conditioning

1. 

The comfort conditions in air conditioning are at (where DBT = Dry bulb temperature, and RH = Relative humidity)

A. 25°C DBT and 100% RH
B. 20°C DBT and 80% RH
C. 22°C DBT and 60% RH
D. 25°C DBT and 40% RH

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

2. 

The dry bulb temperature lines, on the psychrometric chart are

A. vertical and uniformly spaced
B. horizontal and uniformly spaced
C. horizontal and non-uniformly spaced
D. curved lines

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

3. 

The pressure at the outlet of a refrigerant compressor is called

A. suction pressure
B. discharge pressure
C. critical pressure
D. back pressure

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

4. 

A simple air cooling system is good for __________ flight speeds.

A. low
B. high

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

5. 

The highest temperature during the cycle in a vapour compression system occurs after evaporation.

A. True
B. False

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

1 2 3 4 5 6 7 8 9 10 Next »