Boiler Practice

Water freezes at ______ on the Fahrenheit scale?

• 212

• 0

• 100

• 32

Water boils at ______ degrees Fahrenheit.

• 200

• 100

• 212

• 210

What is the function of a boiler?

• to heat water to make steam

• to heat water to make spaghetti

• to transform liquid into a mist

• to mix air and fuel

When taking over a shift, the boiler operator must first check the ___.

• steam pressure

• fuel oil supply

• water level on all boilers

• bottom blowdown valves

What is the function of the burners in boilers?

• Burners inject a mixture of fuel and air into the combustion area of a boiler.

• Burners are needed to change the liquid oil to a mist.

• Burners transfer heat through electromagnetic waves

What is a water-tube boiler?

• water is passed through steel tubes surrounded by exhaust (gases), and the water is then heated by the hot gases
• hot gases pass through tubes surrounded by water, and the water is thus heated by the hot gases
• water runs through the boiler and out the safety valves
• water is outside the pipes and is heated up by the exhaust (gases)

What is a fire-tube boiler? 

• hot gases go into water, creating a mixture of exhaust and steam
• hot gases pass through a water pipe that provides heat to the surroundings
• hot gases pass through fire-tubes, which continue to the burner
• hot gases pass through steel tubes surrounded by water, and the water is thus heated by the hot gases

Fire tube boilers route (send) combustion gases through a series of tubes to transfer heat to water, thus producing steam.

• true

• false

Where is steam produced in a typical water tube boiler?

• Steam is produced in the water tubes that surround the combustion area of the boiler.

• In a pot over an open fire.

• At the base of the boiler so the water can not spill out.

In water tube boilers ___________

• water passes through the tubes which are surrounded by flames and hot gases

• the flames and hot gases pass through the tubes which are surrounded by water