1|Page
MA 2ND CLASS FIREMAN'S PRACTICE EXAM|
COMPREHENSIVE Q&A FOR CERTIFICATION
SUCCESS 2026
The boiler vent valve is located on the
a) top of the steam drum.
b) bottom of the steam drum.
c) top of the mud drum.
d) top of the water drum. - correct-answer -a) top of the steam drum
The purpose of the hole in the end of the staybolt is to
a) indicate how much water is in the boiler.
b) indicate that a staybolt is cracked or broken.
c) help the boiler operator operate more efficiently.
d) provide means of attaching insulation to a boiler. - correct-answer -b) indicate
that a staybolt is cracked or broken
,2|Page
A fusible plug melts at
a) 212 degrees F
b) 450 degrees F
c) 1,000 degrees F
d) none of the above - correct-answer -b) 450 degrees F
As the firing rate increases in a boiler equipped with a convection superheater,
the steam temperature
a) increases
b) decreases
c) stays constant
d) both increases and decreases - correct-answer -a) increases
When boilers are connected to a common header, it is required that an ample
free blowing drain be provided between the stop valves if either or both boilers
have
,3|Page
a) handholes
b) manholes
c) over 10 tubes or flues
d) more than one safety valve - correct-answer -b) manholes
It is permissable to have only one bottom blowdown valve on a boiler when the
a) MAWP does not exceed 100 PSI
b) MAWP exceeds 125 PSI
c) heating surface does not exceed 100 ft^2
d) heating surface does not exceed 500 ft^2 - correct-answer -a) MAWP does not
exceed 100 PSI
When the boiler pressure exceeds ______ PSI, it is required that extra-heavy pipe
be used on the blowoff system.
a) 15
b) 100
c) 125
, 4|Page
d) 150 - correct-answer -c) 125
Baffles are placed between the tubes of a boiler for the purpose of
a) slowing down the rate of combustion.
b) preventing priming.
c) bracing the tube bank.
d) directing the travel of flue gases - correct-answer -d) directing the travel of flue
gases
A boiler has a steaming capacity of 35,500 lb of steam per hour. The evaporation
rate is 10 lb/ft^2 of heating surface per hour. What is the horsepower rating of
this boiler?
a) 100
b) 1,000
c) 3,450
d) 6,900 - correct-answer -b) 1,000
MA 2ND CLASS FIREMAN'S PRACTICE EXAM|
COMPREHENSIVE Q&A FOR CERTIFICATION
SUCCESS 2026
The boiler vent valve is located on the
a) top of the steam drum.
b) bottom of the steam drum.
c) top of the mud drum.
d) top of the water drum. - correct-answer -a) top of the steam drum
The purpose of the hole in the end of the staybolt is to
a) indicate how much water is in the boiler.
b) indicate that a staybolt is cracked or broken.
c) help the boiler operator operate more efficiently.
d) provide means of attaching insulation to a boiler. - correct-answer -b) indicate
that a staybolt is cracked or broken
,2|Page
A fusible plug melts at
a) 212 degrees F
b) 450 degrees F
c) 1,000 degrees F
d) none of the above - correct-answer -b) 450 degrees F
As the firing rate increases in a boiler equipped with a convection superheater,
the steam temperature
a) increases
b) decreases
c) stays constant
d) both increases and decreases - correct-answer -a) increases
When boilers are connected to a common header, it is required that an ample
free blowing drain be provided between the stop valves if either or both boilers
have
,3|Page
a) handholes
b) manholes
c) over 10 tubes or flues
d) more than one safety valve - correct-answer -b) manholes
It is permissable to have only one bottom blowdown valve on a boiler when the
a) MAWP does not exceed 100 PSI
b) MAWP exceeds 125 PSI
c) heating surface does not exceed 100 ft^2
d) heating surface does not exceed 500 ft^2 - correct-answer -a) MAWP does not
exceed 100 PSI
When the boiler pressure exceeds ______ PSI, it is required that extra-heavy pipe
be used on the blowoff system.
a) 15
b) 100
c) 125
, 4|Page
d) 150 - correct-answer -c) 125
Baffles are placed between the tubes of a boiler for the purpose of
a) slowing down the rate of combustion.
b) preventing priming.
c) bracing the tube bank.
d) directing the travel of flue gases - correct-answer -d) directing the travel of flue
gases
A boiler has a steaming capacity of 35,500 lb of steam per hour. The evaporation
rate is 10 lb/ft^2 of heating surface per hour. What is the horsepower rating of
this boiler?
a) 100
b) 1,000
c) 3,450
d) 6,900 - correct-answer -b) 1,000
