# Psychrometrics 1 Quiz Questions NATE

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1. _______temperature measurement is an indication of moisture content of the air
A:Wet bulb
B:Dry bulb
C:Dew point
A:Wet bulb
2. Psychrometry is the science and practice of air mixtures and their controls:
True
False
True
3. Humidity ratio of the air is not affected by a temperature change unless it drops below the saturation temperature:
True
False
True
4. The comfort range of relative humidity for dry bulb temperatures is ______ :
A:20 - 50%
B:RH 60 - 80%
C:RH 45 - 65%
D:RH 70 - 80% RH
C:RH 45 - 65%
5. If the surrounding air is hotter than the skin temperature, the body lose heat.
False
True
False
6. At the dew point temperature, dry bulb temperature is _____ wet bulb temperature: A:Lesser than
B:Equal to
C:Greater than
B:Equal to
7. If the ambient temperature rises 10 F, the skin temperature rises only ______:
A:3 F
B:10 F
C:5 F
D:2 F
A:3 F
8. Which of the following temperature is registered with normal thermometer:
A:Dry bulb temperature
B:Wet bulb temperature
C:Both dry and wet bulb temperatures
A:Dry bulb temperature
9. A ______ is an accurate instrument for measuring pressure
A:Mercury Manometer
B:Bolometer
C:Barometer
A:Mercury Manometer
10. ______ of heat transfer takes place in waveforms
A:Convection
B:Conduction
11. In Psychrometric chart Y-axis indicates which of the following:
A:Dry bulb temperature
B:Enthalpy
C:Humidity ratio
D:Wet bulb temperature
C:Humidity ratio
12. In summer when the room is air conditioned, vapor pressure is _____ on the outside than inside
A:Greater
B:Lesser
A:Greater
13. The ______ of air is reached when the air contains all the moisture it can hold
A:saturation point
B:set point
C:dew point
C:dew point
14. The average body temperature is:
A:94.6°F
B:96.8°F
C:96.4°F
D:98.6°F
D:98.6°F
15. _______ is the heat transfer that takes place mainly in solids
A:Convection
B:Conduction