- | Page
LOW PRESSURE BOILER
PRACTICE TEST FULLY SOLVED
Question: What is necessary to generate steam in a boiler?
Correct answer: Water, heat, and container
Question: The _____ is the part of the boiler with water
on one side and heat on the other.
Correct answer: Heating surface
Question: A _____ boiler has heat and gases of
combustion that pass through tubes surrounded by water.
Correct answer: Firetube
Question: A _____ boiler has water in the tubes and heat
and gases of combustion passing around the tubes.
Correct answer: Watertube
Question: _____ are used in boilers to direct the gases of
combustion over the boiler heating surface.
- | Page
Correct answer: Baffles
Question: Heat that can be measured with a thermometer
is called _____.
Correct answer: Sensible heat
Question: A _____ is used to transfer heat from one
substance to another without allowing the materials to mix.
Correct answer: Heat exchanger
Question: In the _____, air mixes with fuel and burns.
Correct answer: Combustion chamber
Question: _____ is combustion that occurs when fuel is
burned using only the theoretical amount of air.
Correct answer: Perfect combustion
Question: _____ is air that controls the combustion rate,
which determines the amount of fuel burned.
- | Page
Correct answer: Primary air
Question: The breaking up of fuel into small particles to
maximize contact of fuel with air for combustion is called
_____.
Correct answer: Atomization
Question: The _____ provides the air necessary for
combustion.
Correct answer: Draft system
Question: What does NOWL stand for?
Correct answer: Normal operating water level
Question: What does MAWP stand for?
Correct answer: Maximum allowable working pressure
Question: A _____ boiler does not use tubes.
Correct answer: Cast iron
- | Page
Question: To increase efficiency of the boiler, _____.
Correct answer: Increase heating surface
Question: The four systems necessary to operate a boiler
are _____, _____, _____, and _____.
Correct answer: Feedwater, fuel, draft, and steam
Question: _____ is the pressure caused by the weight of
air surrounding the earth.
Correct answer: Atmospheric pressure
Question: Water turns to steam at _____ at atmospheric
pressure.
Correct answer: 212°F
Question: _____ have sections that can be assembled on-
site to produce the boiler capacity required.