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