Mechanical Engineering - Heat Transfer, Refrigeration and Air Conditioning

46. 

The conditioned air supplied to the room must have the capacity to take up

A. room sensible heat load only
B. room latent heat load only
C. both room sensible heat and latent heat loads
D. none of the above

Answer: Option C

Explanation:

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47. 

The process of removing moisture from the air, without change in its dry bulb temperature, is called dehumidification.

A. Correct
B. Incorrect

Answer: Option A

Explanation:

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48. 

The specific humidity during dehumidification process

A. remains constant
B. increases
C. decreases

Answer: Option C

Explanation:

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49. 

Which of the following refrigerant has the lowest freezing point?

A. R-11
B. R-12
C. R-22
D. Ammonia

Answer: Option C

Explanation:

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50. 

For a white body, absorptivity (α ) = 0, reflectivity (ρ) = 1 and transmittivity (τ) = 0.

A. Correct
B. Incorrect

Answer: Option A

Explanation:

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