Complete Solutions
_____ 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. Correct Answers 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. Correct Answers 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 Correct Answers 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. Correct Answers E
_____ compressors are more efficient than other positive
displacement types.
a. Rotary screw.
b. Sliding vane.
c. Rotary lobe.
d. Axial flow.
e. Reciprocating. Correct Answers 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. Correct Answers B
_____ is well known for its contribution to the greenhouse
effect.
a. C4H8
b. CO
c. CO3
d. CO2
e. CH3 Correct Answers 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. Correct Answers 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. Correct Answers 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. Correct Answers 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
e. Dummy piston. Correct Answers A
_____ particles are so small that they will not settle at the
bottom
or float to the top.
a. Angström.
b. Colloidal.
c. Activated sludge.
d. Barminutor.
e. Grit. Correct Answers B
_____ positive displacement compressors require intake and
discharge valves.
a. Rotary.
b. Centrifugal.
c. Sliding vane.
d. Rotary lobe.
e. Reciprocating. Correct Answers e. Reciprocating.
_____ turbines are large turbines consisting of two or more
turbines in series coupled together as one shaft and applied to
one generator.
a. Topping.