ABSA 4B EXAM 2026 WITH QUESTIONS AND
WELL VERIFIED ANSWERS|| GUARANTEED
PASS|| ALREADY GRADED A+
When the installed piece of equipment is expected to be exposed to large heavy
loads, ____ should be installed.
anti-friction bearings
shell type bearings
journal bearings
surface bearings
pitted bearings - ANSWER-b
Altering the firing rate in a direct fire oil heater controls the operational ____.
eddy-currents
corrosion
water treatment requirements
flow rate
temperature - ANSWER-e
In an air compression system, an air receiver provides a more constant air
pressure by eliminating:
,Corrosion in the discharge line piping
Pulsations in the discharge line piping
Surging in the discharge line piping
Priming in the discharge line piping
Corrosion in the discharge line piping - ANSWER-b
Sulphuric acid is commonly used to ____ a hydrogen zeolite softener.
regenerate
soak
filter
backwash
clarify - ANSWER-a
____ is a type of lubrication in which the surfaces to be lubricated are separated
by a substantial quantity of oil.
Fluid film lubrication
Semi-solid lubrication
Friction lubrication
Solid lubrication
Boundary lubrication - ANSWER-a
It is recommended practice to not work higher than ____ from the top of a
ladder.
two steps
five steps
,three steps
four steps
one step - ANSWER-c
When the receivers refrigerant level is low the operator should ____ the
refrigeration system.
charge
reduce output of
start
increase output of
shutdown - ANSWER-a
Vapour bound or ____ is when the pump loses liquid prime and the casing fills
with vapour, as the impeller rotates.
vapour locked
priming
purging
hammering
surging - ANSWER-a
A ____ is an instrument that measures the hydrogen-ion activity in water-based
solutions.
anemometer
hygrometer
litmus paper
, hydrometer
pH meter - ANSWER-e
In an air compression system, an air receiver must have the following auxiliary
components installed:
Safety valve
Drain Valve
Pressure Gauge
All of the above - ANSWER-d
____ accumulation in the blowdown y-strainer is an indication that corrosion is
present in the system.
Silt
Debris
Rust
Sludge
Floc - ANSWER-c
Large heavy loads are supported by ____.
brinelling lubrication
surface bearing lubrication
bearing caps
fluid film lubrication
lubrication - ANSWER-d
WELL VERIFIED ANSWERS|| GUARANTEED
PASS|| ALREADY GRADED A+
When the installed piece of equipment is expected to be exposed to large heavy
loads, ____ should be installed.
anti-friction bearings
shell type bearings
journal bearings
surface bearings
pitted bearings - ANSWER-b
Altering the firing rate in a direct fire oil heater controls the operational ____.
eddy-currents
corrosion
water treatment requirements
flow rate
temperature - ANSWER-e
In an air compression system, an air receiver provides a more constant air
pressure by eliminating:
,Corrosion in the discharge line piping
Pulsations in the discharge line piping
Surging in the discharge line piping
Priming in the discharge line piping
Corrosion in the discharge line piping - ANSWER-b
Sulphuric acid is commonly used to ____ a hydrogen zeolite softener.
regenerate
soak
filter
backwash
clarify - ANSWER-a
____ is a type of lubrication in which the surfaces to be lubricated are separated
by a substantial quantity of oil.
Fluid film lubrication
Semi-solid lubrication
Friction lubrication
Solid lubrication
Boundary lubrication - ANSWER-a
It is recommended practice to not work higher than ____ from the top of a
ladder.
two steps
five steps
,three steps
four steps
one step - ANSWER-c
When the receivers refrigerant level is low the operator should ____ the
refrigeration system.
charge
reduce output of
start
increase output of
shutdown - ANSWER-a
Vapour bound or ____ is when the pump loses liquid prime and the casing fills
with vapour, as the impeller rotates.
vapour locked
priming
purging
hammering
surging - ANSWER-a
A ____ is an instrument that measures the hydrogen-ion activity in water-based
solutions.
anemometer
hygrometer
litmus paper
, hydrometer
pH meter - ANSWER-e
In an air compression system, an air receiver must have the following auxiliary
components installed:
Safety valve
Drain Valve
Pressure Gauge
All of the above - ANSWER-d
____ accumulation in the blowdown y-strainer is an indication that corrosion is
present in the system.
Silt
Debris
Rust
Sludge
Floc - ANSWER-c
Large heavy loads are supported by ____.
brinelling lubrication
surface bearing lubrication
bearing caps
fluid film lubrication
lubrication - ANSWER-d
