3B2 - Ultimate ABSA Study Guide |995 questions with
verified answers
_____ and carbon rings can be used in reciprocating air
compressors to deliver oil free air.
a. Brass.
b. Aluminum.
c. Titanium.
d. Ceramic.
e. Teflon. Ans✓✓✓ e. Teflon.
_____ are essential parts of the burner safety management system.
a. Low Water Fuel Cutoffs.
b. Flame Scanners.
c. Flame Igniters.
d. Gas Burner Nozzles.
e. Fuel Pressure Gages. Ans✓✓✓ B
_____ can be started by use of a compressed air starting motor or
applied high pressure air directly to starting cylinders.
a. Gas turbine engines
b. Steam turbine engines
c. Large diesel engines
,d. Gasoline engines
e. Centrifugal pumps Ans✓✓✓ C
_____ compression is preferable because of the lesser amount of power
required to carry out the compression.
a. Adiabatic.
b. Positive displacement.
c. Dynamic.
d. Unloaded.
e. Isothermal. Ans✓✓✓ E
_____ compressors are more efficient than other positive displacement
types.
a. Rotary screw.
b. Sliding vane.
c. Rotary lobe.
d. Axial flow.
e. Reciprocating. Ans✓✓✓ E
_____ is the percentage change in speed from no load to full load
conditions.
a. Speed governor.
,b. Governor speed droop.
c. Governor speed increase.
d. Throttle governing.
e. Integral band. Ans✓✓✓ B
_____ is well known for its contribution to the greenhouse effect.
a. C4H8
b. CO
c. CO3
d. CO2
e. CH3 Ans✓✓✓ D
_____ is/are mixed with the effluent of the wastewater heater to help
breakdown the organic materials in the flow.
a. Activated sludge.
b. Activated chemicals.
c. Oils.
d. Polishing chemicals.
e. Steam. Ans✓✓✓ A
_____ of an air compressor means to lubricate crankshaft bearings,
connecting rod bearings, and crosshead on reciprocating
compressors and shaft bearings on rotary and dynamic
, compressors.
a. External lubrication.
b. Internal lubrication.
c. Peripheral lubrication.
d. Splash lubrication.
e. Pressure lubrication. Ans✓✓✓ d. Splash lubrication.
_____ on centrifugal air compressors are provided in order to
control the amount of air flowing to the impeller and thus control the
capacity of the unit.
a. Adjustable inlet vanes.
b. Adjustable diffuser vanes.
c. Variable frequency drive.
d. Moving and fixed blades.
e. Dummy piston. Ans✓✓✓ a. Adjustable inlet vanes
_____ on centrifugal air compressors are provided in order to control the
amount of air flowing to the impeller and thus control the capacity of the
unit.
a. Adjustable inlet vanes
b. Adjustable diffuser vanes
c. Variable frequency drive
d. Moving and fixed blades
verified answers
_____ and carbon rings can be used in reciprocating air
compressors to deliver oil free air.
a. Brass.
b. Aluminum.
c. Titanium.
d. Ceramic.
e. Teflon. Ans✓✓✓ e. Teflon.
_____ are essential parts of the burner safety management system.
a. Low Water Fuel Cutoffs.
b. Flame Scanners.
c. Flame Igniters.
d. Gas Burner Nozzles.
e. Fuel Pressure Gages. Ans✓✓✓ B
_____ can be started by use of a compressed air starting motor or
applied high pressure air directly to starting cylinders.
a. Gas turbine engines
b. Steam turbine engines
c. Large diesel engines
,d. Gasoline engines
e. Centrifugal pumps Ans✓✓✓ C
_____ compression is preferable because of the lesser amount of power
required to carry out the compression.
a. Adiabatic.
b. Positive displacement.
c. Dynamic.
d. Unloaded.
e. Isothermal. Ans✓✓✓ E
_____ compressors are more efficient than other positive displacement
types.
a. Rotary screw.
b. Sliding vane.
c. Rotary lobe.
d. Axial flow.
e. Reciprocating. Ans✓✓✓ E
_____ is the percentage change in speed from no load to full load
conditions.
a. Speed governor.
,b. Governor speed droop.
c. Governor speed increase.
d. Throttle governing.
e. Integral band. Ans✓✓✓ B
_____ is well known for its contribution to the greenhouse effect.
a. C4H8
b. CO
c. CO3
d. CO2
e. CH3 Ans✓✓✓ D
_____ is/are mixed with the effluent of the wastewater heater to help
breakdown the organic materials in the flow.
a. Activated sludge.
b. Activated chemicals.
c. Oils.
d. Polishing chemicals.
e. Steam. Ans✓✓✓ A
_____ of an air compressor means to lubricate crankshaft bearings,
connecting rod bearings, and crosshead on reciprocating
compressors and shaft bearings on rotary and dynamic
, compressors.
a. External lubrication.
b. Internal lubrication.
c. Peripheral lubrication.
d. Splash lubrication.
e. Pressure lubrication. Ans✓✓✓ d. Splash lubrication.
_____ on centrifugal air compressors are provided in order to
control the amount of air flowing to the impeller and thus control the
capacity of the unit.
a. Adjustable inlet vanes.
b. Adjustable diffuser vanes.
c. Variable frequency drive.
d. Moving and fixed blades.
e. Dummy piston. Ans✓✓✓ a. Adjustable inlet vanes
_____ on centrifugal air compressors are provided in order to control the
amount of air flowing to the impeller and thus control the capacity of the
unit.
a. Adjustable inlet vanes
b. Adjustable diffuser vanes
c. Variable frequency drive
d. Moving and fixed blades
