MA 2nd Class Fireman's Practice Exam 2024
| Ma 2nd Class Firemans Practice Actual Exam
Update Latest 2024 Questions and Correct
Answers Rated A+
What is the minimum Pipe size if the gauge glass blowdown line? -
ANSWER-3/8 inch
Only one bottom blowdown valve is required for boilers under -
ANSWER-100 PSI MAWP
The type of safety valve allowed on boilers is the -ANSWER-Spring-
loaded pop
Who is authorized to repair and adjust safety valves? -ANSWER-
Manufacturer's representative
Cast iron boilers can be used -ANSWER-only for low pressure plants
Which valve allows fluid to flow in one direction? -ANSWER-Check
Valve
To stop a safety valve from chattering -ANSWER-raise the blow down
ring
The minimum permitted size of the water column pipe connection is -
ANSWER-1 inch
The number of complete turns required between open and close on a
slow opening valve is -ANSWER-five
,What is the principle of the bourdon tube? -ANSWER-pressure
straightens out tube
A valve must be installed in the feedwater line -ANSWER-between the
check valve and the feedwater pump
A continuous blowdown is used to -ANSWER-remove accumulated
solids
What should come out when the bottom try cock is opened? -
ANSWER-Water
What is the minimum diameter for the water column blowdown line? -
ANSWER-3/4 inches
What is the minimum size piping for bottom blowdowns lines? -
ANSWER-1 inch
How often should safety valves be tested? -ANSWER-monthly
A two-element feedwater regulator is controlled by -ANSWER-water
level and steam flow rate
Which of the following is not performed by a nonreturn valve? -
ANSWER-Opens automatically when boiler pressure falls below the
header pressure
You would not run an accumulation test on a boiler equipped with -
ANSWER-super heater
,Which is the minimum setting on the blowback of a safety valve? -
ANSWER-2 lbs
Good combustion results in -ANSWER-low oxygen and carbon
monoxide, high carbon dioxide
Excess air for gas should not exceed -ANSWER-10%
The Ringelmann Scale us associated with -ANSWER-Smoke density
What do mechanical burners use for atomization -ANSWER-high
pressure fuel
The fire eye is used to -ANSWER-notify the programmer about the
presence of a falme
Viscosity is:
A. The point at which oil starts to flow
B. The point at which oil starts to support combustion
C. The specific gravity of oil
D. None of the above -ANSWER-none of the above
The purge cycle -ANSWER-removes unburned fuel
The flame detector is directed -ANSWER-into the furnace area
The programmer:
, A. Opens the pilot valve
B. Opens the main fuel valve
C. Receives the flame detector signal -ANSWER-All of the above
Which of the following statements is true?
A. Flue gas oxygen percentage stays constant from fuel to fuel
B. Flue gas CO2 percentage stays constant from fuel to fuel
C. Excess air is not requited or well designed burners
D. Smoke and carbon monoxide cannot exist together -ANSWER-Flue
gas oxygen percentage stays constant from fuel to fuel
Which of the following statements is true?
A. The flash point of an oil is the temp. At which it flows
B. The viscosity of an oil is its relations to the weight of an equal
amount of water
C. The specific gravity of fuel oil is its resistance to flow -ANSWER-
none of the above
An Orsat analyzer measures -ANSWER-O2, CO2, CO
The flame failure control is tested by -ANSWER-shutting off the fuel
supply to the burner
What is the efficiency of a steam plant with a heat rate of 12,000
BTU/kw? -ANSWER-28.4%
What type of fuel must be preheated to burn properly? -ANSWER-
Heavy oil
No 6 fuel oil for mechanical atomizing burners is usually heated to -
ANSWER-150 F
| Ma 2nd Class Firemans Practice Actual Exam
Update Latest 2024 Questions and Correct
Answers Rated A+
What is the minimum Pipe size if the gauge glass blowdown line? -
ANSWER-3/8 inch
Only one bottom blowdown valve is required for boilers under -
ANSWER-100 PSI MAWP
The type of safety valve allowed on boilers is the -ANSWER-Spring-
loaded pop
Who is authorized to repair and adjust safety valves? -ANSWER-
Manufacturer's representative
Cast iron boilers can be used -ANSWER-only for low pressure plants
Which valve allows fluid to flow in one direction? -ANSWER-Check
Valve
To stop a safety valve from chattering -ANSWER-raise the blow down
ring
The minimum permitted size of the water column pipe connection is -
ANSWER-1 inch
The number of complete turns required between open and close on a
slow opening valve is -ANSWER-five
,What is the principle of the bourdon tube? -ANSWER-pressure
straightens out tube
A valve must be installed in the feedwater line -ANSWER-between the
check valve and the feedwater pump
A continuous blowdown is used to -ANSWER-remove accumulated
solids
What should come out when the bottom try cock is opened? -
ANSWER-Water
What is the minimum diameter for the water column blowdown line? -
ANSWER-3/4 inches
What is the minimum size piping for bottom blowdowns lines? -
ANSWER-1 inch
How often should safety valves be tested? -ANSWER-monthly
A two-element feedwater regulator is controlled by -ANSWER-water
level and steam flow rate
Which of the following is not performed by a nonreturn valve? -
ANSWER-Opens automatically when boiler pressure falls below the
header pressure
You would not run an accumulation test on a boiler equipped with -
ANSWER-super heater
,Which is the minimum setting on the blowback of a safety valve? -
ANSWER-2 lbs
Good combustion results in -ANSWER-low oxygen and carbon
monoxide, high carbon dioxide
Excess air for gas should not exceed -ANSWER-10%
The Ringelmann Scale us associated with -ANSWER-Smoke density
What do mechanical burners use for atomization -ANSWER-high
pressure fuel
The fire eye is used to -ANSWER-notify the programmer about the
presence of a falme
Viscosity is:
A. The point at which oil starts to flow
B. The point at which oil starts to support combustion
C. The specific gravity of oil
D. None of the above -ANSWER-none of the above
The purge cycle -ANSWER-removes unburned fuel
The flame detector is directed -ANSWER-into the furnace area
The programmer:
, A. Opens the pilot valve
B. Opens the main fuel valve
C. Receives the flame detector signal -ANSWER-All of the above
Which of the following statements is true?
A. Flue gas oxygen percentage stays constant from fuel to fuel
B. Flue gas CO2 percentage stays constant from fuel to fuel
C. Excess air is not requited or well designed burners
D. Smoke and carbon monoxide cannot exist together -ANSWER-Flue
gas oxygen percentage stays constant from fuel to fuel
Which of the following statements is true?
A. The flash point of an oil is the temp. At which it flows
B. The viscosity of an oil is its relations to the weight of an equal
amount of water
C. The specific gravity of fuel oil is its resistance to flow -ANSWER-
none of the above
An Orsat analyzer measures -ANSWER-O2, CO2, CO
The flame failure control is tested by -ANSWER-shutting off the fuel
supply to the burner
What is the efficiency of a steam plant with a heat rate of 12,000
BTU/kw? -ANSWER-28.4%
What type of fuel must be preheated to burn properly? -ANSWER-
Heavy oil
No 6 fuel oil for mechanical atomizing burners is usually heated to -
ANSWER-150 F
