3B2 ABSA EXAM QUESTIONS WITH COMPLETE
SOLUTIONS
_____ are essential parts of the burner safety management
system. Correct Answers Flame scanners
_____ is the percentage change in speed of a steam turbine from
no load to full load conditions. Correct Answers Governor
speed droop
_____ is well known for its contribution to the greenhouse
effect. Correct Answers CO2
__________ 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. Correct Answers
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. Correct Answers
Adjustable inlet vanes
A _____ is used to activate an inlet air unloader by responding
to receiver pressure. Correct Answers Spring-loaded pilot valve
A _____ is used to activate an inlet air unloader by responding
to receiver pressure. Correct Answers Spring-loaded pilot valve
,A _____ system has the electrical supply from the utility grid
fixed, while the cogeneration system looks after changing
electrical requirements. Correct Answers Set electrical demand
A _____ system has the electrical supply from the utility grid
fixed, while the cogeneration system looks after changing
electrical requirements. Correct Answers Set electrical demand
A _____ works on the principle of cool air contacting and
removing heat from warm water. Correct Answers Cooling
tower
A _____ works on the principle of cool air contacting and
removing heat from warm water. Correct Answers Cooling
tower
A back-pressure turbine with exhaust steam going to an old
boiler header that is supplying steam to an old lower pressure
turbine is called a: Correct Answers Topping turbine
A capillary tube is mainly used on what type of system or unit?
Correct Answers Small household systems
A centrifugal air compressor may have two or more _____ for
multi-staging. Correct Answers Impellers on the same shaft
A condensate extraction pump on the condenser hotwell is
usually a: Correct Answers Multi-stage centrifugal pump
,A condenser shell may be fitted with an expansion joint if the:
Correct Answers Condenser tubes are expanded into the tube
sheets
A direct refrigeration system is one in which the evaporator coil
is in direct contact with what? Correct Answers The
refrigerated space
A double-acting reciprocating compressor: Correct Answers
Receives and discharges air at both ends of the cylinder
A dummy piston is used on a steam turbine to: Correct Answers
Counter end thrust
A eutectic salt solution used as a heat transfer medium in an
indirect heater is a mixture of: Correct Answers Sodium nitrite
and potassium nitrate
A gas turbine operates with an outside air temperature of 40
degrees Celsius, and a relative humidity of 10%. If the outside
air temperature was -5 degrees Celsius with a relative humidity
of 65%, this gas turbine Correct Answers will develop more
power
A gas turbine starting device Correct Answers is necessary for
all gas turbines
A high condensate level in a condenser: Correct Answers
Could cause non-condensable gases to accumulate in the
condenser
, A hollow drum rotor of a steam turbine is machined both outside
and inside. How is the drum end cover with shaft installed in the
rotor? Correct Answers Shrink fitted and welded
A HRSG extracts most of its heat energy from the exhaust of a
gas turbine. What supplies the remainder of the heat energy
required to produce steam to run the steam turbine? Correct
Answers Burning fuel in a series of auxiliary burners
A magneto ignition system: Correct Answers Produces a hotter
spark at high speeds
A mandatory auxiliary in a gas turbine installation is a/an:
Correct Answers Starting motor
A mechanical overspeed trip is designed to _____ in the event of
an overspeed condition. Correct Answers Shut off the turbine's
steam supply
A natural gas fired gas turbine would likely require natural gas
pressurized to Correct Answers 4000 kPa
A reaction turbine has: Correct Answers Rows of stationary
blades alternating with rows of moving blades
A simple condenser with low installation cost would be
__________. Correct Answers Air-cooled
A simple mechanical governor uses a _____ attached to the end
of the turbine shaft. Correct Answers Set of weights
SOLUTIONS
_____ are essential parts of the burner safety management
system. Correct Answers Flame scanners
_____ is the percentage change in speed of a steam turbine from
no load to full load conditions. Correct Answers Governor
speed droop
_____ is well known for its contribution to the greenhouse
effect. Correct Answers CO2
__________ 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. Correct Answers
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. Correct Answers
Adjustable inlet vanes
A _____ is used to activate an inlet air unloader by responding
to receiver pressure. Correct Answers Spring-loaded pilot valve
A _____ is used to activate an inlet air unloader by responding
to receiver pressure. Correct Answers Spring-loaded pilot valve
,A _____ system has the electrical supply from the utility grid
fixed, while the cogeneration system looks after changing
electrical requirements. Correct Answers Set electrical demand
A _____ system has the electrical supply from the utility grid
fixed, while the cogeneration system looks after changing
electrical requirements. Correct Answers Set electrical demand
A _____ works on the principle of cool air contacting and
removing heat from warm water. Correct Answers Cooling
tower
A _____ works on the principle of cool air contacting and
removing heat from warm water. Correct Answers Cooling
tower
A back-pressure turbine with exhaust steam going to an old
boiler header that is supplying steam to an old lower pressure
turbine is called a: Correct Answers Topping turbine
A capillary tube is mainly used on what type of system or unit?
Correct Answers Small household systems
A centrifugal air compressor may have two or more _____ for
multi-staging. Correct Answers Impellers on the same shaft
A condensate extraction pump on the condenser hotwell is
usually a: Correct Answers Multi-stage centrifugal pump
,A condenser shell may be fitted with an expansion joint if the:
Correct Answers Condenser tubes are expanded into the tube
sheets
A direct refrigeration system is one in which the evaporator coil
is in direct contact with what? Correct Answers The
refrigerated space
A double-acting reciprocating compressor: Correct Answers
Receives and discharges air at both ends of the cylinder
A dummy piston is used on a steam turbine to: Correct Answers
Counter end thrust
A eutectic salt solution used as a heat transfer medium in an
indirect heater is a mixture of: Correct Answers Sodium nitrite
and potassium nitrate
A gas turbine operates with an outside air temperature of 40
degrees Celsius, and a relative humidity of 10%. If the outside
air temperature was -5 degrees Celsius with a relative humidity
of 65%, this gas turbine Correct Answers will develop more
power
A gas turbine starting device Correct Answers is necessary for
all gas turbines
A high condensate level in a condenser: Correct Answers
Could cause non-condensable gases to accumulate in the
condenser
, A hollow drum rotor of a steam turbine is machined both outside
and inside. How is the drum end cover with shaft installed in the
rotor? Correct Answers Shrink fitted and welded
A HRSG extracts most of its heat energy from the exhaust of a
gas turbine. What supplies the remainder of the heat energy
required to produce steam to run the steam turbine? Correct
Answers Burning fuel in a series of auxiliary burners
A magneto ignition system: Correct Answers Produces a hotter
spark at high speeds
A mandatory auxiliary in a gas turbine installation is a/an:
Correct Answers Starting motor
A mechanical overspeed trip is designed to _____ in the event of
an overspeed condition. Correct Answers Shut off the turbine's
steam supply
A natural gas fired gas turbine would likely require natural gas
pressurized to Correct Answers 4000 kPa
A reaction turbine has: Correct Answers Rows of stationary
blades alternating with rows of moving blades
A simple condenser with low installation cost would be
__________. Correct Answers Air-cooled
A simple mechanical governor uses a _____ attached to the end
of the turbine shaft. Correct Answers Set of weights
