2024 Stationary Engineer License Practice Grade 4 Questions with
100% Correct Answers | Distinction!!
what is a boiler - -a closed metal container (pressure vessel) which water is
heated to produce steam or heated water
what is steam - -the vapor that forms when water is heated to its boiling point
when did the greatest impact of the use of steam power occur - -during the
industrial revolution 18th and early 19th century
who invented the steam engine and when - -James Watt of Scotland in 1736
How is steam produced - -water is heated to 212 degrees at atmospheric
pressure
state the first law of thermodynamics - -energy cannot be created or destroyed
but may be changed from one form to another
state the second law of thermodynamics - -heat always flows from a material at a
high temperature to a material at a low temperature
what is sensible heat - -heat that causes a temperature change that can be
measured with a thermometer or sensed by a person
what is latent heat - -head identified by a change of state and no temperature
change
, what is a BTU - -the amount of energy required to raise the temperature of 1 lb of
water 1 degree fahrenheit
describe the 4 systems all steam boilers operate using - -feedwater system, fuel
system, draft system, and steam system
name 3 ways heat is transferred - -conduction, convection, and radiation
How is heat generated in a boiler - -by the combustion of a fuel
name the 3 conditions of combustion - -perfect, complete. or incomplete
name the 3 classifications of combustion air - -primary air, secondary air, and
excess air
what does the feedwater system do? - -supplies the proper amount of water to the
boiler
what does the draft system regulate? - -the flow of air to and from the boiler
what does the fuel system do - -provides fuel for combustion to generate the
necessary heat in the boiler
what does the steam system do? - -collects, controls, and distributes the steam
produced an the boiler
what are symbols used for - -to represent lines, boiler fittings, and accessories on
drawings
100% Correct Answers | Distinction!!
what is a boiler - -a closed metal container (pressure vessel) which water is
heated to produce steam or heated water
what is steam - -the vapor that forms when water is heated to its boiling point
when did the greatest impact of the use of steam power occur - -during the
industrial revolution 18th and early 19th century
who invented the steam engine and when - -James Watt of Scotland in 1736
How is steam produced - -water is heated to 212 degrees at atmospheric
pressure
state the first law of thermodynamics - -energy cannot be created or destroyed
but may be changed from one form to another
state the second law of thermodynamics - -heat always flows from a material at a
high temperature to a material at a low temperature
what is sensible heat - -heat that causes a temperature change that can be
measured with a thermometer or sensed by a person
what is latent heat - -head identified by a change of state and no temperature
change
, what is a BTU - -the amount of energy required to raise the temperature of 1 lb of
water 1 degree fahrenheit
describe the 4 systems all steam boilers operate using - -feedwater system, fuel
system, draft system, and steam system
name 3 ways heat is transferred - -conduction, convection, and radiation
How is heat generated in a boiler - -by the combustion of a fuel
name the 3 conditions of combustion - -perfect, complete. or incomplete
name the 3 classifications of combustion air - -primary air, secondary air, and
excess air
what does the feedwater system do? - -supplies the proper amount of water to the
boiler
what does the draft system regulate? - -the flow of air to and from the boiler
what does the fuel system do - -provides fuel for combustion to generate the
necessary heat in the boiler
what does the steam system do? - -collects, controls, and distributes the steam
produced an the boiler
what are symbols used for - -to represent lines, boiler fittings, and accessories on
drawings
