ABSA 4b |701 questions with accurate answers
____________ are required to prevent oil from spreading beyond
the confines of a heater in the event of a ruptured tube.
a) Moats
b) Dikes
c) Tunnels
d) Rails
e) By-pass pipes Ans✓✓✓ B
A 300 mm tungsten hacksaw blade with a .78 mm teeth pitch is used
to cut
a) a brass shaft 25 mm diameter
b) 38 mm x 39 mm hardwood
c) ceramic materials
d) PVC pipe
e) thin wall tubing Ans✓✓✓ E
A bimetal thermostat's operating range is between
a) 5 and 40 degrees C
b) 0 and 50 degrees C
c) 0 and 40 degrees C
d) 10 and 32 degrees C
e) 50 and 90 degrees C Ans✓✓✓ D
,A black light crack detection utilizes ultraviolet light and
a) iridescent powder
b) an infrared solution
c) a radium solution
d) fluorescent penetrant
e) opaque dye Ans✓✓✓ D
A boiler circulating pump gland should have some leakage
a) to prevent the packing from drying out
b) so that the shaft sleeve will take the wear
c) in order for the stuffing box to run at the desired high
temperature
d) so the operator can tell when the pump becomes
vapour-bound
e) in order to keep the motor amperage down Ans✓✓✓ A
A boiler inspection
a) must be done after every shut down of the boiler
b) must be done when the boiler inspector requests it
c) must be done every two years
d) is done with the owner's permission only
e) must be done before the boiler is ready for start-up Ans✓✓✓ B
,A centrifugal compressor refrigerating system can be stopped
simply by pressing the stop button unless which of the
following circumstances is true?
a) The system is automatically controlled.
b) The system's auxiliary equipment is not electrically
interlocked.
c) The system's auxiliary equipment can be stopped
simultaneously.
d) The compressor can be shut down at the same time as the
other equipment.
e) None of the above. Ans✓✓✓ B
A chemical dot placed under the glass lens of a sight glass
which is exposed to the liquid serves what function?
a) To monitor liquid flow
b) To monitor refrigerant levels
c) To monitor the presence of moisture
d) To monitor the presence of foreign particles
e) To monitor the pressure levels Ans✓✓✓ C
A collet is
a) a type of hole punch
, b) used to make a square hole in a piece of plate
c) the moving part of a micrometer
d) a type of face spanner wrench
e) a holder for a thread die Ans✓✓✓ E
A condensate receiver low level cutoff switch will
a) act to open a make-up solenoid
b) stop the feedpump thereby preventing damage to it
c) act to close boiler fuel valve(s)
d) sound an alarm
e) cause the make-up valve to close
Heating Boiler Operating Controls Ans✓✓✓ B
A device for measuring relative humidity is called
a) a dew point tester
b) an R.H. gauge
c) an aspirating gauge
d) a psychrometer
e) a chronometer Ans✓✓✓ D
A device used to position dampers and control valves is
termed
a) a controller
____________ are required to prevent oil from spreading beyond
the confines of a heater in the event of a ruptured tube.
a) Moats
b) Dikes
c) Tunnels
d) Rails
e) By-pass pipes Ans✓✓✓ B
A 300 mm tungsten hacksaw blade with a .78 mm teeth pitch is used
to cut
a) a brass shaft 25 mm diameter
b) 38 mm x 39 mm hardwood
c) ceramic materials
d) PVC pipe
e) thin wall tubing Ans✓✓✓ E
A bimetal thermostat's operating range is between
a) 5 and 40 degrees C
b) 0 and 50 degrees C
c) 0 and 40 degrees C
d) 10 and 32 degrees C
e) 50 and 90 degrees C Ans✓✓✓ D
,A black light crack detection utilizes ultraviolet light and
a) iridescent powder
b) an infrared solution
c) a radium solution
d) fluorescent penetrant
e) opaque dye Ans✓✓✓ D
A boiler circulating pump gland should have some leakage
a) to prevent the packing from drying out
b) so that the shaft sleeve will take the wear
c) in order for the stuffing box to run at the desired high
temperature
d) so the operator can tell when the pump becomes
vapour-bound
e) in order to keep the motor amperage down Ans✓✓✓ A
A boiler inspection
a) must be done after every shut down of the boiler
b) must be done when the boiler inspector requests it
c) must be done every two years
d) is done with the owner's permission only
e) must be done before the boiler is ready for start-up Ans✓✓✓ B
,A centrifugal compressor refrigerating system can be stopped
simply by pressing the stop button unless which of the
following circumstances is true?
a) The system is automatically controlled.
b) The system's auxiliary equipment is not electrically
interlocked.
c) The system's auxiliary equipment can be stopped
simultaneously.
d) The compressor can be shut down at the same time as the
other equipment.
e) None of the above. Ans✓✓✓ B
A chemical dot placed under the glass lens of a sight glass
which is exposed to the liquid serves what function?
a) To monitor liquid flow
b) To monitor refrigerant levels
c) To monitor the presence of moisture
d) To monitor the presence of foreign particles
e) To monitor the pressure levels Ans✓✓✓ C
A collet is
a) a type of hole punch
, b) used to make a square hole in a piece of plate
c) the moving part of a micrometer
d) a type of face spanner wrench
e) a holder for a thread die Ans✓✓✓ E
A condensate receiver low level cutoff switch will
a) act to open a make-up solenoid
b) stop the feedpump thereby preventing damage to it
c) act to close boiler fuel valve(s)
d) sound an alarm
e) cause the make-up valve to close
Heating Boiler Operating Controls Ans✓✓✓ B
A device for measuring relative humidity is called
a) a dew point tester
b) an R.H. gauge
c) an aspirating gauge
d) a psychrometer
e) a chronometer Ans✓✓✓ D
A device used to position dampers and control valves is
termed
a) a controller
