MA 2ND CLASS FIREMAN'S PRACTICE EXAM/
NEWEST 2025 WITH COMPLETE QUESTIONS
AND CORRECT VERIFIED ANSWERS/ WELL
GRADED A+//LATEST VERSION
After installing a new gauge glass, the proper procedure for returning the glass to
service is
a) crack open both the top and bottom valves
b) open the drain and crack both the bottom and top valves
c) open the drain and crack open the top valve
d) open the drain and crack open the bottom valve - CORRECT ANSWERS-c) open the
drain and crack open the top valve
The steam pressure gauge is graduated in
a) absolute pressure
b) inches of pressure
c) pounds per square inch
d) pounds per square foot - CORRECT ANSWERS-c) pounds per square inch
One of the purposes of the water column is to
a) indicate to the operator the level of the water in the boiler
b) easily find the pressure in the boiler
c) dampen the oscillation of the water in the gauge glass
d) prevent the boiler from priming - CORRECT ANSWERS-c) dampen the oscillation of
the water in the gauge glass
The gauge glass should be blown down
a) daily
b) weekly
c) monthly
d) yearly - CORRECT ANSWERS-a) daily
The flame failure control is tested by
a) blowing down the low-water cutoff
b) adjusting the pressuretrol
c) calling the inspector
d) securing the fuel supply to the burner - CORRECT ANSWERS-d) securing the fuel
supply to the burner
Which of the following controls operates due to changes in temperature?
a) Fire eye
b) Vaporstat
c) Aquastat
,d) Pressuretrol - CORRECT ANSWERS-c) Aquastat
The pressure-sensitive device attached to the fan housing of a fully automatic burner
starts operating when there is
a) flame failure
b) too large an increase in primary air
c) fan failure
d) too large an increase in secondary air - CORRECT ANSWERS-c) fan failure
If the pressuretrol starts the burner and ignition failed to take place, the control that
protects the boiler is the
a) low-water cutoff
b) flame failure cutoff
c) vaporstat
d) aquastat - CORRECT ANSWERS-b) flame failure cutoff
The pressure-sensitive device in Question 91 is sometimes called a(n)
a) pressuretrol
b) aquastat
c) thermostat
d) vaporstat - CORRECT ANSWERS-d) vaporstat
Draft is measured in
a) ounces per square inch
b) inches of water
c) inches of mercury
d) pounds per square inch - CORRECT ANSWERS-b) inches of water
Which of the following is used to measure temperature?
a) Fyrite analyzer
b) Vaporstat
c) Orsat analyzer
d) Pyrometer - CORRECT ANSWERS-d) Pyrometer
The main stop valve is located on the
a) oil supply line
b) condensate breaker
c) vacuum breaker
d) steam line - CORRECT ANSWERS-d) steam line
OS&Y stands for
a) overhead steam and yield
b) outside screw and yoke
c) outside stem and yoke
d) overall stainless and yoke - CORRECT ANSWERS-b) outside screw and yoke
, An interlock control is a(n)
a) device that prevents attempts to fire unless safe
b) wrench that secures the burner
c) device that prevents the main stop from opening
d) automatic control lock - CORRECT ANSWERS-a) device that prevents attempts to
fire unless safe
Trial for ignition refers to the
a) burner testing period
b) time the main fuel valve stays open for ignition
c) flame light test
d) the flame scanner detecting the pilot flame - CORRECT ANSWERS-d) the flame
scanner detecting the pilot flame
More than one safety valve is required on boilers that have over
a) 100 ft^2 of heating surface
b) 500 ft^2 of heating surface
c) 100 PSI MAWP
d) 500 PSI MAWP - CORRECT ANSWERS-b) 500 ft^2 of heating surface
Two or more boilers that are equipped with manholes and are connected to a common
header must have
a) two stop valves with a drain coming off between them
b) both a nonreturn and a gate stop valve
c) both a globe and a gate stop valve
d) a stop and a check valve - CORRECT ANSWERS-a) two stop valves with a drain
coming off between them
Before the gas pilot ignites, the
a) low-water cutoff must be checked
b) gas pressure must be at least 10 PSI
c) furnace must be purged
d) oil pressure must be at least 50 PSI - CORRECT ANSWERS-c) furnace must be
purged
If the main fuel valve is closed while the burner is on,
a) there will be high water
b) there will be low water
c) the oil temperature will drop
d) the flame detector will activate - CORRECT ANSWERS-d) the flame detector will
activate
Pyrometers measure
a) temperature
b) draft
c) smoke density
NEWEST 2025 WITH COMPLETE QUESTIONS
AND CORRECT VERIFIED ANSWERS/ WELL
GRADED A+//LATEST VERSION
After installing a new gauge glass, the proper procedure for returning the glass to
service is
a) crack open both the top and bottom valves
b) open the drain and crack both the bottom and top valves
c) open the drain and crack open the top valve
d) open the drain and crack open the bottom valve - CORRECT ANSWERS-c) open the
drain and crack open the top valve
The steam pressure gauge is graduated in
a) absolute pressure
b) inches of pressure
c) pounds per square inch
d) pounds per square foot - CORRECT ANSWERS-c) pounds per square inch
One of the purposes of the water column is to
a) indicate to the operator the level of the water in the boiler
b) easily find the pressure in the boiler
c) dampen the oscillation of the water in the gauge glass
d) prevent the boiler from priming - CORRECT ANSWERS-c) dampen the oscillation of
the water in the gauge glass
The gauge glass should be blown down
a) daily
b) weekly
c) monthly
d) yearly - CORRECT ANSWERS-a) daily
The flame failure control is tested by
a) blowing down the low-water cutoff
b) adjusting the pressuretrol
c) calling the inspector
d) securing the fuel supply to the burner - CORRECT ANSWERS-d) securing the fuel
supply to the burner
Which of the following controls operates due to changes in temperature?
a) Fire eye
b) Vaporstat
c) Aquastat
,d) Pressuretrol - CORRECT ANSWERS-c) Aquastat
The pressure-sensitive device attached to the fan housing of a fully automatic burner
starts operating when there is
a) flame failure
b) too large an increase in primary air
c) fan failure
d) too large an increase in secondary air - CORRECT ANSWERS-c) fan failure
If the pressuretrol starts the burner and ignition failed to take place, the control that
protects the boiler is the
a) low-water cutoff
b) flame failure cutoff
c) vaporstat
d) aquastat - CORRECT ANSWERS-b) flame failure cutoff
The pressure-sensitive device in Question 91 is sometimes called a(n)
a) pressuretrol
b) aquastat
c) thermostat
d) vaporstat - CORRECT ANSWERS-d) vaporstat
Draft is measured in
a) ounces per square inch
b) inches of water
c) inches of mercury
d) pounds per square inch - CORRECT ANSWERS-b) inches of water
Which of the following is used to measure temperature?
a) Fyrite analyzer
b) Vaporstat
c) Orsat analyzer
d) Pyrometer - CORRECT ANSWERS-d) Pyrometer
The main stop valve is located on the
a) oil supply line
b) condensate breaker
c) vacuum breaker
d) steam line - CORRECT ANSWERS-d) steam line
OS&Y stands for
a) overhead steam and yield
b) outside screw and yoke
c) outside stem and yoke
d) overall stainless and yoke - CORRECT ANSWERS-b) outside screw and yoke
, An interlock control is a(n)
a) device that prevents attempts to fire unless safe
b) wrench that secures the burner
c) device that prevents the main stop from opening
d) automatic control lock - CORRECT ANSWERS-a) device that prevents attempts to
fire unless safe
Trial for ignition refers to the
a) burner testing period
b) time the main fuel valve stays open for ignition
c) flame light test
d) the flame scanner detecting the pilot flame - CORRECT ANSWERS-d) the flame
scanner detecting the pilot flame
More than one safety valve is required on boilers that have over
a) 100 ft^2 of heating surface
b) 500 ft^2 of heating surface
c) 100 PSI MAWP
d) 500 PSI MAWP - CORRECT ANSWERS-b) 500 ft^2 of heating surface
Two or more boilers that are equipped with manholes and are connected to a common
header must have
a) two stop valves with a drain coming off between them
b) both a nonreturn and a gate stop valve
c) both a globe and a gate stop valve
d) a stop and a check valve - CORRECT ANSWERS-a) two stop valves with a drain
coming off between them
Before the gas pilot ignites, the
a) low-water cutoff must be checked
b) gas pressure must be at least 10 PSI
c) furnace must be purged
d) oil pressure must be at least 50 PSI - CORRECT ANSWERS-c) furnace must be
purged
If the main fuel valve is closed while the burner is on,
a) there will be high water
b) there will be low water
c) the oil temperature will drop
d) the flame detector will activate - CORRECT ANSWERS-d) the flame detector will
activate
Pyrometers measure
a) temperature
b) draft
c) smoke density
