engineering recuitment JSSC JE Mock Test 2023 Refrigeration and Air Conditioning Air Conditioning Psychrometric Chart and Processes
Consider the following statements:
1. The relative humidity of air does not change with temperature as long as specific humidity remains constant.
2. Dew-point temperature is the temperature at which condensation begins when air is cooled at constant volume.
3. Saturated air passing over a water surface does not cause change of air temperature.
4. For saturated air, dry-bulb, wet-bulb and dew-point temperatures are identical.
Which of the above statements are correct?
1
1 and 2
2
2 and 3
3
1 and 4
4
3 and 4