Refrigeration and Air Conditioning
In a psychrometric chart, specific humidity (moisture content) lines are

Vertical and uniformly spaced
Curved lines
Horizontal and non-uniformly spaced
Horizontal and uniformly spaced

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Refrigeration and Air Conditioning
For proper refrigeration in a cabinet, if the temperature and vapour pressure difference between cabinet and atmosphere is high, then

Bigger cabinet should be used
Perfectly tight vapour seal should be used
Refrigerant with lower evaporation temperature should be used
Smaller cabinet should be used

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