150Q ABSA 4B Practice Final Exam Test 2026\2027.
In order to protect the driver, a start-stop air compressor should be equipped with:
A)
Safety heads
B)
An intercooler
C)
Manual cylinder bleed petcocks
D)
Pre-start automatic unloading
E)
An automatic blowdown system
D)
Pre-start automatic unloading
When the supply is above the pump the total static head of the pump will be the:
A)
Capacity of the pump
B)
Difference between the static suction head and the static discharge head
C)
Sum of the static suction head and the static discharge head
D)
Discharge pressure in metre
,150Q ABSA 4B Practice Final Exam Test 2026\2027.
E)
Discharge head of the pump
B)
Difference between the static suction head and the static discharge head
What kind of shaft seal would be most appropriate to use where some leakage is acceptable?
A)
Mechanical
B)
Liquid Film
C)
Dry gas
D)
Carbon rings
E)
Labyrinth
E)
Labyrinth
Sliding vane compressors:
A)
Use cylinder valves
B)
Are 100% efficient
C)
Are double acting compressors
, 150Q ABSA 4B Practice Final Exam Test 2026\2027.
D)
Are positive displacement compressors
E)
Fall into the centrifugal compressor category
D)
Are positive displacement compressors
Each hot water heating boiler shall be equipped with stop valves in the supply and return
connections to:
A)
Drain off the boiler without emptying the system
B)
To drain the boiler
C)
Prevent over pressure of the boiler
D)
Act as throttling valves if the temperature gets too high
E)
Isolate the boiler from other boilers
Drain off the boiler without emptying the system
Gauge glasses show a water level which is
A)
the same if all liquids have the same temperature
B)
slightly lower when the glass water density is higher
In order to protect the driver, a start-stop air compressor should be equipped with:
A)
Safety heads
B)
An intercooler
C)
Manual cylinder bleed petcocks
D)
Pre-start automatic unloading
E)
An automatic blowdown system
D)
Pre-start automatic unloading
When the supply is above the pump the total static head of the pump will be the:
A)
Capacity of the pump
B)
Difference between the static suction head and the static discharge head
C)
Sum of the static suction head and the static discharge head
D)
Discharge pressure in metre
,150Q ABSA 4B Practice Final Exam Test 2026\2027.
E)
Discharge head of the pump
B)
Difference between the static suction head and the static discharge head
What kind of shaft seal would be most appropriate to use where some leakage is acceptable?
A)
Mechanical
B)
Liquid Film
C)
Dry gas
D)
Carbon rings
E)
Labyrinth
E)
Labyrinth
Sliding vane compressors:
A)
Use cylinder valves
B)
Are 100% efficient
C)
Are double acting compressors
, 150Q ABSA 4B Practice Final Exam Test 2026\2027.
D)
Are positive displacement compressors
E)
Fall into the centrifugal compressor category
D)
Are positive displacement compressors
Each hot water heating boiler shall be equipped with stop valves in the supply and return
connections to:
A)
Drain off the boiler without emptying the system
B)
To drain the boiler
C)
Prevent over pressure of the boiler
D)
Act as throttling valves if the temperature gets too high
E)
Isolate the boiler from other boilers
Drain off the boiler without emptying the system
Gauge glasses show a water level which is
A)
the same if all liquids have the same temperature
B)
slightly lower when the glass water density is higher
