Boiler Exam Review 1

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

What two products are required (needed) to produce (make) steam?

• water

• heat

• fan

• boiler

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

Air preheater is used to preheat air with the help of ______

• Air

• Flue gases

• Water

• Steam

________is the transfer of heat through a solid object, or between two objects, as a result of physical contact.

• Conduction

• Convection

• Radiation

___ draft is created by a draft fan that pulls the gases of combustion through the furnace.

• Forced

• Natural

• Induced

• Chimney

Mechanical draft is produced by ___.

• the height of the chimney

• the diameter of the chimney

• power-driven fans

• steam jets

This boiler has flue gasses passing around the tubes and water flowing through the tubes

• Fire tube

• Cast iron

• Condensing

• Water tube

Soot accumulation during combustion

• Will cause and increase in efficiency

• will have no effect on efficiency

• will cause a decrease in efficiency

• none of the above

Scale accumulation on the inside of a boiler can lead to

• A decrease in heat transfer

• An increase in heat transfer

• Will stop all heat transfer

• All of the above