Grade 4 Stationary Engineer License
Practice Questions And Answers With
Verified Solutions Already Passed!!!
what is a boiler - ANSWER✔✔ a closed metal container (pressure vessel) which
water is heated to produce steam or heated water
what is steam - ANSWER✔✔ the vapor that forms when water is heated to its
boiling point
when did the greatest impact of the use of steam power occur - ANSWER✔✔
during the industrial revolution 18th and early 19th century
who invented the steam engine and when - ANSWER✔✔ James Watt of Scotland
in 1736
How is steam produced - ANSWER✔✔ water is heated to 212 degrees at
atmospheric pressure
state the first law of thermodynamics - ANSWER✔✔ energy cannot be created or
destroyed but may be changed from one form to another
state the second law of thermodynamics - ANSWER✔✔ heat always flows from a
material at a high temperature to a material at a low temperature
what is sensible heat - ANSWER✔✔ heat that causes a temperature change that
can be measured with a thermometer or sensed by a person
, what is latent heat - ANSWER✔✔ head identified by a change of state and no
temperature change
what is a BTU - ANSWER✔✔ the amount of energy required to raise the
temperature of 1 lb of water 1 degree fahrenheit
name 3 ways heat is transferred - ANSWER✔✔ conduction, convection, and
radiation
How is heat generated in a boiler - ANSWER✔✔ by the combustion of a fuel
name the 3 conditions of combustion - ANSWER✔✔ perfect, complete. or
incomplete
name the 3 classifications of combustion air - ANSWER✔✔ primary air, secondary
air, and excess air
describe the 4 systems all steam boilers operate using - ANSWER✔✔ feedwater
system, fuel system, draft system, and steam system
what does the feedwater system do? - ANSWER✔✔ supplies the proper amount
of water to the boiler
what does the draft system regulate? - ANSWER✔✔ the flow of air to and from
the boiler
Practice Questions And Answers With
Verified Solutions Already Passed!!!
what is a boiler - ANSWER✔✔ a closed metal container (pressure vessel) which
water is heated to produce steam or heated water
what is steam - ANSWER✔✔ the vapor that forms when water is heated to its
boiling point
when did the greatest impact of the use of steam power occur - ANSWER✔✔
during the industrial revolution 18th and early 19th century
who invented the steam engine and when - ANSWER✔✔ James Watt of Scotland
in 1736
How is steam produced - ANSWER✔✔ water is heated to 212 degrees at
atmospheric pressure
state the first law of thermodynamics - ANSWER✔✔ energy cannot be created or
destroyed but may be changed from one form to another
state the second law of thermodynamics - ANSWER✔✔ heat always flows from a
material at a high temperature to a material at a low temperature
what is sensible heat - ANSWER✔✔ heat that causes a temperature change that
can be measured with a thermometer or sensed by a person
, what is latent heat - ANSWER✔✔ head identified by a change of state and no
temperature change
what is a BTU - ANSWER✔✔ the amount of energy required to raise the
temperature of 1 lb of water 1 degree fahrenheit
name 3 ways heat is transferred - ANSWER✔✔ conduction, convection, and
radiation
How is heat generated in a boiler - ANSWER✔✔ by the combustion of a fuel
name the 3 conditions of combustion - ANSWER✔✔ perfect, complete. or
incomplete
name the 3 classifications of combustion air - ANSWER✔✔ primary air, secondary
air, and excess air
describe the 4 systems all steam boilers operate using - ANSWER✔✔ feedwater
system, fuel system, draft system, and steam system
what does the feedwater system do? - ANSWER✔✔ supplies the proper amount
of water to the boiler
what does the draft system regulate? - ANSWER✔✔ the flow of air to and from
the boiler
