engineering recuitment HPCL Engineer Mock Test 2024 Refrigeration and Air Conditioning Air Conditioning Psychrometric Chart and Processes
Consider the following statements for the appropriate context:
1. The Relative Humidity of air remains constant during sensible heating or cooling
2. The Dew Point Temperature of air remains constant during sensible heating or cooling
3. The total enthalpy of air remains constant during adiabatic cooling
4. It is necessary to cool the air below its Dew Point Temperature for dehumidifying
Which of the above statements are correct?1
1, 2 and 3
2
1, 2 and 4
3
3 and 4 only
4
2, 3 and 4