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Mechanic Refrigeration & Air Conditioning Practice Test: Psychrometry
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Psychrometry is the study of the properties of gas-vapor mixtures, particularly moist air. It's also known as psychrometrics or hygrometry.

Mechanic Refrigeration & Air Conditioning Practice Test: Psychrometry
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25 Questions

1. The difference between dry bulb temperature and wet bulb temperature, is called
2. Specific humidity is defined as the ratio of _______________
3. The temperature to which moist air must be cooled at constant pressure before condensation of moisture takes place is known as___________
4. The Dalton’s law deals with the _________________
5. For saturated air _____________
6. Which of the following chart shows relative humidity?
7. Psychrometric chart is valid for____________
8. In winter air conditioning, the air is ___________________
9. The ambient air temperature as recorded by ordinary thermometer is called_______
10. The temperature to which moist air must be cooled at constant pressure before condensation of moisture takes place is known as___________
11. The variable part of moist air is ___________
12. Which thermometer helps to find out relative humidity?
13. Which thermometer helps to find out relative humidity?
14. The wet bulb temperature is a measure of_____________
15. Which of the following decreases during sensible cooling of air?
16. For unsaturated air_________________
17. The ambient air temperature as recorded by ordinary thermometer is called_______
18. The temperature recorder by a thermometer, when it is not affected by the moisture present in, it is called _______________
19. Relative humidity is defined as _______________
20. Which of the following instrument may be used to determine surface temperature and temperature of inaccessible locations by indicators located at convenient points?
21. For summer air conditioning the relative humidity should not be less than________
22. Wet Bulb Depression (WBD) is the difference between the ________________
23. The wet bulb temperature is a measure of_____________
24. Dry bulb temperature (DBT) is the actual temperature of ____________
25. The temperature at which moisture condenses on a surface is called_____________

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