Chapter 14 - Boilers

What is the purpose of a blowdown valve in a boiler system?

• To regulate the pressure in the boiler
• To remove sediment and impurities from the boiler water
• To distribute steam to the different parts of the system
• To control the temperature of the steam

Which of the following is one of the most common steam trap designs?

• Functional trap
• Mechanical trap
• Physical trap
• Pressure trap

What component of a boiler injects air and fuel through a distribution system that mixes them in proper concentrations, so combustion can occur?

• Burners
• Boiler feedwater system
• Economizer
• Steam distribution system

What key component of a natural gas burner is used to inject fuel into the boiler?

• Knockout pots
• Spiders
• Impellers
• Igniters

Which of the following is a common cause of boiler corrosion?

• Low fuel consumption
• Low water level
• Excessive steam flow
• High water pressure

What component of a water tube boiler is used to supply combustion air to the burners?

• Desuperheater
• Draft fans
• Burners
• Air register

What is the purpose of a deaerator in a boiler system?

• To distribute steam to the different parts of the system
• To control the temperature of the steam
• To regulate the pressure in the boiler
• To remove dissolved gases from the feedwater

What is the purpose of a safety valve in a boiler system?

• To distribute steam to the different parts of the system
• To prevent the pressure from exceeding the maximum allowable limit
• To remove sediment and impurities from the boiler water
• To regulate the pressure in the boiler

Which of the following is a common cause of boiler scale buildup?

• High water level
• Low water pressure
• High fuel consumption
• Excessive steam flow

Which type of boiler has the highest efficiency for generating steam?

• Circulating fluidized bed boiler
• Fire tube boiler
• Water tube boiler
• Package boiler