Mechanical Engineering - Heat Transfer, Refrigeration and Air Conditioning

6.
In a psychrometric chart, dew point temperature lines are horizontal and non-uniformly spaced.
Correct
Incorrect
Answer: Option
Explanation:
No answer description is available. Let's discuss.

7.
If the evaporator temperature is kept constant, the coefficient of performance of a refrigeration cycle __________ with the increase in condenser temperature.
increases
decreases
Answer: Option
Explanation:
No answer description is available. Let's discuss.

8.
The by-pass factor, in case of sensible cooling of air, is given by (where td1 = Dry bulb temperature of air entering the cooling coil, td2 = Dry bulb temperature of air leaving the cooling coil, and td3 = Dry bulb temperature of the cooling coil)
Answer: Option
Explanation:
No answer description is available. Let's discuss.

9.
The evaporator used in house-hold refrigerators is
frosting evaporator
non-frosting evaporator
defrosting evaporator
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.

10.
The drier in a refrigeration system removes moisture in the system.
Correct
Incorrect
Answer: Option
Explanation:
No answer description is available. Let's discuss.