4A ABSA QUESTIONS AND ANSWERS
WITH COMPLETE SOLUTIONS 100%
CORRECT RATED A+ ||UPDATED 2026
Question: The specific ratio of fuel to air by volume in a mixture is used to define
its:
A) Flammable limit B) Flow point C) Pour point D) Explosion point E) Floc point
Answer: ✔✔ A) Flammable limit
Question: Which type of equipment is generally considered inefficient at
capturing very small or fine particulate matter?
A) Centrifugal collectors B) Electrostatic precipitators C) Micron filters D) Air
filtration bags ) All of the above
Answer: ✔✔ A) Centrifugal collectors
Question: Which of the following is an essential part of a standard automated
control loop?
A) Transmitter B) Sensing element C) Control valve D) Controller E) All of the
above
Answer: ✔✔ E) All of the above
Immediately after rolling, a reeling machine smooths the outer surface of the hot
tube.
A. Process referred to as extrusion
B. Process referred to as reeling
C. Process referred to as rolling
D. Process referred to as burnishing
,E. Process referred to as lengthening
D. Process referred to as burnishing
A _______ is installed in low voltage or line voltage applications.
A. Duct thermostat
B. Modulating thermostat
C. Bimetal thermostat
D. Remote bulb thermostat
E. Aquastat
D. Remote bulb thermostat
______ is the overflow of deposited weld metal over the base metal without fusion.
A. Undercut
B. Slag inclusions
C. Overlap
D. Distortion
E. Cracks
C. Overlap
Due to the nature of ______ above and below 4°C, it will expand.
A. Water
B. Oil
, C. Mercury
D. Steam
E. Clay
A. Water
A combination superheater has a _____.
A. Linear temp characteristic
B. Steady temp characteristic
C. Fluctuating temp characteristic
D. Rising temp characteristic
E. Falling temp characteristic
B. Steady temp characteristic
In circumstances where electric power is the primary heating source, the maximum
output kilowatt rating of the heating element for electric boilers equals the ____.
A. Boiler rating
B. Boiler size
C. Boiler effectiveness
D. Boiler efficiency
E. Boiler factor of safety
A. Boiler rating
ASME Code Section VI covers the recommended rules for the care of ____.
WITH COMPLETE SOLUTIONS 100%
CORRECT RATED A+ ||UPDATED 2026
Question: The specific ratio of fuel to air by volume in a mixture is used to define
its:
A) Flammable limit B) Flow point C) Pour point D) Explosion point E) Floc point
Answer: ✔✔ A) Flammable limit
Question: Which type of equipment is generally considered inefficient at
capturing very small or fine particulate matter?
A) Centrifugal collectors B) Electrostatic precipitators C) Micron filters D) Air
filtration bags ) All of the above
Answer: ✔✔ A) Centrifugal collectors
Question: Which of the following is an essential part of a standard automated
control loop?
A) Transmitter B) Sensing element C) Control valve D) Controller E) All of the
above
Answer: ✔✔ E) All of the above
Immediately after rolling, a reeling machine smooths the outer surface of the hot
tube.
A. Process referred to as extrusion
B. Process referred to as reeling
C. Process referred to as rolling
D. Process referred to as burnishing
,E. Process referred to as lengthening
D. Process referred to as burnishing
A _______ is installed in low voltage or line voltage applications.
A. Duct thermostat
B. Modulating thermostat
C. Bimetal thermostat
D. Remote bulb thermostat
E. Aquastat
D. Remote bulb thermostat
______ is the overflow of deposited weld metal over the base metal without fusion.
A. Undercut
B. Slag inclusions
C. Overlap
D. Distortion
E. Cracks
C. Overlap
Due to the nature of ______ above and below 4°C, it will expand.
A. Water
B. Oil
, C. Mercury
D. Steam
E. Clay
A. Water
A combination superheater has a _____.
A. Linear temp characteristic
B. Steady temp characteristic
C. Fluctuating temp characteristic
D. Rising temp characteristic
E. Falling temp characteristic
B. Steady temp characteristic
In circumstances where electric power is the primary heating source, the maximum
output kilowatt rating of the heating element for electric boilers equals the ____.
A. Boiler rating
B. Boiler size
C. Boiler effectiveness
D. Boiler efficiency
E. Boiler factor of safety
A. Boiler rating
ASME Code Section VI covers the recommended rules for the care of ____.
