J104 Quiz 2

What is the purpose of a psychometric chart?

• to explain how much heat is in the air

• to define all the different properties of air

• to allow us to predict changes in the weather

• to show the relationships between different properties of air

What is another term for dew point?

• saturation point

• moisture content

• relative humidity

• dry bulb temperature

What does enthalpy mean?

• the percentage of heat in the air

• how much moisture is in the air

• the air temperature

• how much heat is in the air

What does volume mean on a psychrometric chart?

• the weight of the air in a space

• how much the air weighs in a fixed area

• the amount of heat is a given space

• how much heat there is per metre squared

What is the unit of measurement for enthalpy?

• degrees Celsius

• kilojoules per kilogram

• metres cubed per kilogram

• percent

What is the unit of measurement for relative humidity?

• degrees Celsius

• kilojoules per kilogram

• metres cubed per kilogram

• percent

What is the unit of measurement for volume?

• degrees Celsius

• kilojoules per kilogram

• metres cubed per kilogram

• percent

What is the symbol for enthalpy?

• RH

• DB

• H

• W

Thinking about the term ‘relative humidity’, what is another word for relative?

• family member

• different

• changing

• comparative

What does a dew point actually tell us?

• the point at which water vapour changes state

• the maximum amount of water the air can hold

• the percentage of water vapour in the air

• how much heat the air can hold