ABSA 4B Exam 2026 – Complete Study Guide,
Practice Questions & Verified Answers
Internal ____ is not required for dynamic type compressors.
seals
lubrication
pressure monitoring
corrosion monitoring
temperature monitoring - correct answers -b
Low pressure or high pressure are the two primary classifications of ____.
centrifugal pumps
sump pumps
boilers
draft fans
pressure controllers - correct answers -e
The boiler feedwater becomes increasingly ____ as it approaches the measurement of zero.
acidic
1
,neutral
softer
basic
alkaline - correct answers -a
The following hydrocarbon(s) may be entrained in a natural gas stream:
Propane
Butane
Ethane
Methane
All of the above - correct answers -e
Although ____ is created, high viscosity oils are still preferred for low speed/high load systems.
lower floc point oils
lower oil friction
high pour point oils
high velocity oils
higher oil friction - correct answers -e
Every shift the boiler water should be ____.
2
,filled with dissolved solids
tested
condensed
replaced
evaporated - correct answers -b
Sodium sulphite is a commonly used ____ in boilers.
oxygen scavenger
carbon dioxide scavenger
coagulant
pH inhibitor
flocculant - correct answers -a
Cement may be used for the protective coating of a ____.
u-tube manometers
orifice plates
venturi tubes
pressure gauges
hot water storage tank - correct answers -e
3
, The hot exhaust gases from the gas turbine combustor travel downstream to be ____ in the turbine
blading.
expanded
filtered
heating
contracted
cooled - correct answers -a
Recovery boilers must be shut down immediately when a tube leak develops because water generates a
violent physical reaction upon contacting ____.
white liquor
black liquor
green liquor
molten smelt
cooking liquor - correct answers -d
In operating applications with high pressure and slow speed ____ are commonly used.
coagulants
light oils
low viscosity mineral oils
low viscosity synthetic oils
4
Practice Questions & Verified Answers
Internal ____ is not required for dynamic type compressors.
seals
lubrication
pressure monitoring
corrosion monitoring
temperature monitoring - correct answers -b
Low pressure or high pressure are the two primary classifications of ____.
centrifugal pumps
sump pumps
boilers
draft fans
pressure controllers - correct answers -e
The boiler feedwater becomes increasingly ____ as it approaches the measurement of zero.
acidic
1
,neutral
softer
basic
alkaline - correct answers -a
The following hydrocarbon(s) may be entrained in a natural gas stream:
Propane
Butane
Ethane
Methane
All of the above - correct answers -e
Although ____ is created, high viscosity oils are still preferred for low speed/high load systems.
lower floc point oils
lower oil friction
high pour point oils
high velocity oils
higher oil friction - correct answers -e
Every shift the boiler water should be ____.
2
,filled with dissolved solids
tested
condensed
replaced
evaporated - correct answers -b
Sodium sulphite is a commonly used ____ in boilers.
oxygen scavenger
carbon dioxide scavenger
coagulant
pH inhibitor
flocculant - correct answers -a
Cement may be used for the protective coating of a ____.
u-tube manometers
orifice plates
venturi tubes
pressure gauges
hot water storage tank - correct answers -e
3
, The hot exhaust gases from the gas turbine combustor travel downstream to be ____ in the turbine
blading.
expanded
filtered
heating
contracted
cooled - correct answers -a
Recovery boilers must be shut down immediately when a tube leak develops because water generates a
violent physical reaction upon contacting ____.
white liquor
black liquor
green liquor
molten smelt
cooking liquor - correct answers -d
In operating applications with high pressure and slow speed ____ are commonly used.
coagulants
light oils
low viscosity mineral oils
low viscosity synthetic oils
4
