Stationary Engineer License Practice Grade 4
QUESTIONS WITH COMPLETE 100% VERIFIED
SOLUTIONS 2024/2025
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
QUESTIONS WITH COMPLETE 100% VERIFIED
SOLUTIONS 2024/2025
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
