Power Engineering 3B2 - Chapter 1-15 Questions With
Complete Solutions
_____ and _____ can be used in a HRSG to reduce NOX
leaving the HRSG.
a. Steam and NH3
b. CO2 and NH3
c. SO2 and NH3
d. H2O and NH3
e. CO2 and SO2 Correct Answers A
NH3 is ammonia which is injected prior to the catalyst in an
SCR (selective catalytic reduction) system
_____ 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 well known for its contribution to the greenhouse
effect.
a. C4H82
b. CO
c. CO3
d. CO2
e. CH3 Correct Answers D
,_____ 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. ångström
b. Colloidal
c. Activated sludge
d. Barminutor
e. Grit Correct Answers B
_____________ turbines are large turbines consisting of two or
more turbines in series coupled together as one shaft and applied
to one generator.
a. Topping
b. Tandem-compound
c. Condensing-bleeder
d. Cross-compound
e. Mixed pressure Correct Answers B
_________________ is the percent change in speed required for
load change equal to the rated.
, a. Speed governor
b. Governor speed drop
c. Governor speed increase
d. Throttle governing
e. Integral band Correct Answers B
__________________ turbines are large turbines with parallel
shafts with a generator on each shaft.
a. Condensing
b. Tandem-compound
c. Extraction-bleeder
d. Condensing-bleeder
e. Cross-compound Correct Answers E
___________________ 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
"Clarification" involves the following processes
1) Mixing
2) Floatation
3) Flocculation
Complete Solutions
_____ and _____ can be used in a HRSG to reduce NOX
leaving the HRSG.
a. Steam and NH3
b. CO2 and NH3
c. SO2 and NH3
d. H2O and NH3
e. CO2 and SO2 Correct Answers A
NH3 is ammonia which is injected prior to the catalyst in an
SCR (selective catalytic reduction) system
_____ 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 well known for its contribution to the greenhouse
effect.
a. C4H82
b. CO
c. CO3
d. CO2
e. CH3 Correct Answers D
,_____ 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. ångström
b. Colloidal
c. Activated sludge
d. Barminutor
e. Grit Correct Answers B
_____________ turbines are large turbines consisting of two or
more turbines in series coupled together as one shaft and applied
to one generator.
a. Topping
b. Tandem-compound
c. Condensing-bleeder
d. Cross-compound
e. Mixed pressure Correct Answers B
_________________ is the percent change in speed required for
load change equal to the rated.
, a. Speed governor
b. Governor speed drop
c. Governor speed increase
d. Throttle governing
e. Integral band Correct Answers B
__________________ turbines are large turbines with parallel
shafts with a generator on each shaft.
a. Condensing
b. Tandem-compound
c. Extraction-bleeder
d. Condensing-bleeder
e. Cross-compound Correct Answers E
___________________ 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
"Clarification" involves the following processes
1) Mixing
2) Floatation
3) Flocculation
