Quiz on Air Systems and Plumbing 2.7

How is the air typically warmed in warm air systems?

• Electric heater

• Solar heater

• Gas-fired heater

• Wood-fired heater

In what type of systems is air used as a pressure charge?

• Open heating systems

• Sealed heating systems

• Solar heating systems

• Electric heating systems

What is another application of air in plumbing besides heating?

• Cooling systems

• Pressure charging

• Water filtration

• Humidification

What is a common method to clear blocked drains using air?

• Low pressure

• Medium pressure

• High pressure

• No pressure

Which application of steam involves using large hot water calorifiers?

• Residential heating

• Industrial hot water production

• Agricultural irrigation

• Food processing

What is one of the basic types of LPG used for?

• Generating electricity

• Heating homes

• Cooling systems

• Water purification

What is a benefit of LPG in its clean state?

• Renewable energy source

• Can be used in remote areas

• Non-flammable

• Non-toxic

What is the role of LPG in cooking appliances?

• Provides electricity

• Provides heat

• Provides cooling

• Provides light

Why might butane not expand to a gas on very cold days?

• It has a low calorific value

• It has a high boiling point

• It has a low boiling point

• It has a high calorific value

What is the boiling point of propane?

• -5°C

• -45°C

• 0°C

• 5°C