Grade 4 Stationary Engineer License Practice EXAM
Questions & Answers | 100% Verified solutions
|Questions with Correct Answers 2025 latest update!!
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 & Answers | 100% Verified solutions
|Questions with Correct Answers 2025 latest update!!
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
