F Gas Exam with answers
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The condition of the refrigerant entering the expansion
|\ |\ |\ |\ |\ |\ |\ |\
device is? - CORRECT ANSWERS ✔✔High pressure sub
|\ |\ |\ |\ |\ |\ |\ |\
cooled liquid |\
The indications of a refrigerant leak on a refrigeration
|\ |\ |\ |\ |\ |\ |\ |\ |\
system is most likely if the following has been observed? -
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
CORRECT ANSWERS ✔✔The evaporator superheat is high
|\ |\ |\ |\ |\ |\ |\
with bubbles in the liquid line sight glass
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The EC F Gas Regulations 517/2014 requires refrigeration
|\ |\ |\ |\ |\ |\ |\ |\
systems containing > 50 and < 500 of an HFC refrigerant
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
without an automatic leak detector to be leak tested? -
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
CORRECT ANSWERS ✔✔6 monthly |\ |\ |\
Which of the following TEV superheat settings is likely to
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
cause refrigeration system hermetic compressor to run
|\ |\ |\ |\ |\ |\ |\
continuously and overheat? - CORRECT ANSWERS ✔✔20K |\ |\ |\ |\ |\ |\
Under the F Gas Regulations when should a newly
|\ |\ |\ |\ |\ |\ |\ |\ |\
installed system be checked for refrigeration leakage? -
|\ |\ |\ |\ |\ |\ |\ |\
CORRECT ANSWERS ✔✔Immediately after being put into |\ |\ |\ |\ |\ |\ |\
service
, The residual flux that is left on the outside of a brazed
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
joint must be removed because? - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\
✔✔The flux absorbs water from the air and corrodes the
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
pipework
What pipe diameter is least likely to fail when carrying out
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
the strength test using OFN? - CORRECT ANSWERS ✔✔1
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
inch
Which one of the following effects would result in an
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
increase in system efficiency? - CORRECT ANSWERS ✔✔A
|\ |\ |\ |\ |\ |\ |\ |\
reduction in vapour specific volume |\ |\ |\ |\
The ODP of the refrigerant R22 is? - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
✔✔0.05
What would cause a reduction in the efficiency of a
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
cooling plant? - CORRECT ANSWERS ✔✔High pressure
|\ |\ |\ |\ |\ |\ |\
ratio
Which one of the following would improve the energy
|\ |\ |\ |\ |\ |\ |\ |\ |\
efficiency of an air conditioning or refrigeration system
|\ |\ |\ |\ |\ |\ |\ |\
the most? - CORRECT ANSWERS ✔✔Lowering the
|\ |\ |\ |\ |\ |\ |\
condensing temperature and raising the evaporating |\ |\ |\ |\ |\ |\
temperature
|\ |\ |\ |\
The condition of the refrigerant entering the expansion
|\ |\ |\ |\ |\ |\ |\ |\
device is? - CORRECT ANSWERS ✔✔High pressure sub
|\ |\ |\ |\ |\ |\ |\ |\
cooled liquid |\
The indications of a refrigerant leak on a refrigeration
|\ |\ |\ |\ |\ |\ |\ |\ |\
system is most likely if the following has been observed? -
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
CORRECT ANSWERS ✔✔The evaporator superheat is high
|\ |\ |\ |\ |\ |\ |\
with bubbles in the liquid line sight glass
|\ |\ |\ |\ |\ |\ |\ |\
The EC F Gas Regulations 517/2014 requires refrigeration
|\ |\ |\ |\ |\ |\ |\ |\
systems containing > 50 and < 500 of an HFC refrigerant
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
without an automatic leak detector to be leak tested? -
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
CORRECT ANSWERS ✔✔6 monthly |\ |\ |\
Which of the following TEV superheat settings is likely to
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
cause refrigeration system hermetic compressor to run
|\ |\ |\ |\ |\ |\ |\
continuously and overheat? - CORRECT ANSWERS ✔✔20K |\ |\ |\ |\ |\ |\
Under the F Gas Regulations when should a newly
|\ |\ |\ |\ |\ |\ |\ |\ |\
installed system be checked for refrigeration leakage? -
|\ |\ |\ |\ |\ |\ |\ |\
CORRECT ANSWERS ✔✔Immediately after being put into |\ |\ |\ |\ |\ |\ |\
service
, The residual flux that is left on the outside of a brazed
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
joint must be removed because? - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\
✔✔The flux absorbs water from the air and corrodes the
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
pipework
What pipe diameter is least likely to fail when carrying out
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
the strength test using OFN? - CORRECT ANSWERS ✔✔1
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
inch
Which one of the following effects would result in an
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
increase in system efficiency? - CORRECT ANSWERS ✔✔A
|\ |\ |\ |\ |\ |\ |\ |\
reduction in vapour specific volume |\ |\ |\ |\
The ODP of the refrigerant R22 is? - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
✔✔0.05
What would cause a reduction in the efficiency of a
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
cooling plant? - CORRECT ANSWERS ✔✔High pressure
|\ |\ |\ |\ |\ |\ |\
ratio
Which one of the following would improve the energy
|\ |\ |\ |\ |\ |\ |\ |\ |\
efficiency of an air conditioning or refrigeration system
|\ |\ |\ |\ |\ |\ |\ |\
the most? - CORRECT ANSWERS ✔✔Lowering the
|\ |\ |\ |\ |\ |\ |\
condensing temperature and raising the evaporating |\ |\ |\ |\ |\ |\
temperature
