4A ABSA Exam Actual Questions and
Answers 2026
Which statement correctly describes the basic law of electricity? -
correct answer ✅Opposite charges attract and like charges repel
What is the purpose of the valve cap on a gas cylinder? -
correct answer ✅To protect the valve from damage
Inside a firetube boiler, which of the following surfaces need
staying? -
correct answer ✅Flat surfaces
Depending on the boiler load the ____ vary the quantity of gas
pressure supplied to the furnace burners. -
correct answer ✅main burner flow control valve
7,000 kJ of heat is generated when ___ kg of H2S gas is completely
burned -
correct answer ✅one
What does high flue gas CO mean? -
correct answer ✅The combustion is inefficient
, 4A ABSA Exam Actual Questions and
Answers 2026
During startup of a steam generator an important rule for
superheaters is they must be vented to ensure steam is flowing
through it, to absorb the heat travelling to the tubes. If the
superheater vent is not opened the tubes will overheat and fail. -
correct answer ✅true
The flame of a fuel source containing ____ will be light blue. -
correct answer ✅H2S
Which nozzles of a mechanical atomizing burner may have higher
capacities than the primary burner nozzle to enable slower boiler
warm-ups? -
correct answer ✅Both intermediate and high fire nozzles
Which standard describes fire pump testing? -
correct answer ✅NFPA 25
A device used to manage large amounts of energy with small
amounts of energy is referred to as a ____. -
correct answer ✅Electric relay
Answers 2026
Which statement correctly describes the basic law of electricity? -
correct answer ✅Opposite charges attract and like charges repel
What is the purpose of the valve cap on a gas cylinder? -
correct answer ✅To protect the valve from damage
Inside a firetube boiler, which of the following surfaces need
staying? -
correct answer ✅Flat surfaces
Depending on the boiler load the ____ vary the quantity of gas
pressure supplied to the furnace burners. -
correct answer ✅main burner flow control valve
7,000 kJ of heat is generated when ___ kg of H2S gas is completely
burned -
correct answer ✅one
What does high flue gas CO mean? -
correct answer ✅The combustion is inefficient
, 4A ABSA Exam Actual Questions and
Answers 2026
During startup of a steam generator an important rule for
superheaters is they must be vented to ensure steam is flowing
through it, to absorb the heat travelling to the tubes. If the
superheater vent is not opened the tubes will overheat and fail. -
correct answer ✅true
The flame of a fuel source containing ____ will be light blue. -
correct answer ✅H2S
Which nozzles of a mechanical atomizing burner may have higher
capacities than the primary burner nozzle to enable slower boiler
warm-ups? -
correct answer ✅Both intermediate and high fire nozzles
Which standard describes fire pump testing? -
correct answer ✅NFPA 25
A device used to manage large amounts of energy with small
amounts of energy is referred to as a ____. -
correct answer ✅Electric relay
