INDUSTRIAL MAINTENANCE FINAL
EXAM REVIEW QUESTIONS AND
ANSWERS 100% CORRECT
the psig cut-off for low and high pressure boilers - ANSWER-15
Number of BTUs one therm is equal to - ANSWER-100,000
Primary air in a boiler - ANSWER-Air in the combustion process that regulates the rate
of combustion
Secondary air in a boiler - ANSWER-Air in the combustion process that controls
combustion efficiency by controlling how completely the fuel is burned
Difference between pre-fabricated and field-erected boilers - ANSWER-Field-erected
boilers are constructed on-site
Four main boiler systems - ANSWER-Feedwater, fuel, steam, draft. Page 237 of
textbook
Feedwater system - ANSWER-Supplies water to the boiler at the proper temperature
and pressure
Fuel system - ANSWER-Supplies fuel in the proper amount to the boiler
Steam system - ANSWER-Collects, controls, and distributes the steam produced in the
boiler
Draft system - ANSWER-Regulates the flow of air to and from the boiler
Sensible heat - ANSWER-Heat energy that can be measured by a change in
temperature
Latent heat - ANSWER-Heat energy that causes a change of state state and no
temperature change
Ideal boiler water pH - ANSWER-10-11.5
Firetube boiler - ANSWER-A boiler in which the hot gases of combustion pass through
tubes surrounded by water
EXAM REVIEW QUESTIONS AND
ANSWERS 100% CORRECT
the psig cut-off for low and high pressure boilers - ANSWER-15
Number of BTUs one therm is equal to - ANSWER-100,000
Primary air in a boiler - ANSWER-Air in the combustion process that regulates the rate
of combustion
Secondary air in a boiler - ANSWER-Air in the combustion process that controls
combustion efficiency by controlling how completely the fuel is burned
Difference between pre-fabricated and field-erected boilers - ANSWER-Field-erected
boilers are constructed on-site
Four main boiler systems - ANSWER-Feedwater, fuel, steam, draft. Page 237 of
textbook
Feedwater system - ANSWER-Supplies water to the boiler at the proper temperature
and pressure
Fuel system - ANSWER-Supplies fuel in the proper amount to the boiler
Steam system - ANSWER-Collects, controls, and distributes the steam produced in the
boiler
Draft system - ANSWER-Regulates the flow of air to and from the boiler
Sensible heat - ANSWER-Heat energy that can be measured by a change in
temperature
Latent heat - ANSWER-Heat energy that causes a change of state state and no
temperature change
Ideal boiler water pH - ANSWER-10-11.5
Firetube boiler - ANSWER-A boiler in which the hot gases of combustion pass through
tubes surrounded by water
