F GAS LATEST EXAM 2025 WITH MULTIPLE
CHOICE OF QUESTIONS AND DETAILED
CORRECT ANSWERS ALREADY GRADED A+
AND 100% GUARANTEE PASS (JUST
RELEASED!!!!!!!)
What pipe diameter is least likely to fail when carrying out the
strength test using OFN? - CORRECT ANSWER-1 inch
Which one of the following effects would result in an increase in
system efficiency? - CORRECT ANSWER-A reduction in vapour
specific volume
The ODP of the refrigerant R22 is? - CORRECT ANSWER-0.05
What would cause a reduction in the efficiency of a cooling
plant? - CORRECT ANSWER-High pressure ratio
Which one of the following would improve the energy efficiency
of an air conditioning or refrigeration system the most? -
CORRECT ANSWER-Lowering the condensing temperature and
raising the evaporating temperature
Why might a unit short cycle on low pressure control? - CORRECT
ANSWER-Refrigerant loss
, What refrigerant is covered by the requirements of EC
Regulations 517/2014? - CORRECT ANSWER-R404A
What identifies that a system may have lost refrigerant? -
CORRECT ANSWER-Bubbles in the sight glass
The term indirect leak checking refers to? - CORRECT ANSWER-The
calculation of the correct operating conditions by taking
pressure and temperature readings
To find a suspected refrigerant leak on a freezer room
evaporator it's best to? - CORRECT ANSWER-Leak test the evaporator
with the unit in shut down
If the fins on the evaporator become blocked what is the result
on the suction vapour? - CORRECT ANSWER-Pressure and
temperature fall
To calculate the system compression ratio? - CORRECT ANSWER-
Divide discharge pressure by suction pressure (gauge)
What would make ice form around a TEV and possibly cause
the pipe work damage? - CORRECT ANSWER-Short of refrigerant
A refrigeration system contains a refrigerant at a dew point
condition of -25 degrees, you would like? - CORRECT ANSWER-5k of
superheat
CHOICE OF QUESTIONS AND DETAILED
CORRECT ANSWERS ALREADY GRADED A+
AND 100% GUARANTEE PASS (JUST
RELEASED!!!!!!!)
What pipe diameter is least likely to fail when carrying out the
strength test using OFN? - CORRECT ANSWER-1 inch
Which one of the following effects would result in an increase in
system efficiency? - CORRECT ANSWER-A reduction in vapour
specific volume
The ODP of the refrigerant R22 is? - CORRECT ANSWER-0.05
What would cause a reduction in the efficiency of a cooling
plant? - CORRECT ANSWER-High pressure ratio
Which one of the following would improve the energy efficiency
of an air conditioning or refrigeration system the most? -
CORRECT ANSWER-Lowering the condensing temperature and
raising the evaporating temperature
Why might a unit short cycle on low pressure control? - CORRECT
ANSWER-Refrigerant loss
, What refrigerant is covered by the requirements of EC
Regulations 517/2014? - CORRECT ANSWER-R404A
What identifies that a system may have lost refrigerant? -
CORRECT ANSWER-Bubbles in the sight glass
The term indirect leak checking refers to? - CORRECT ANSWER-The
calculation of the correct operating conditions by taking
pressure and temperature readings
To find a suspected refrigerant leak on a freezer room
evaporator it's best to? - CORRECT ANSWER-Leak test the evaporator
with the unit in shut down
If the fins on the evaporator become blocked what is the result
on the suction vapour? - CORRECT ANSWER-Pressure and
temperature fall
To calculate the system compression ratio? - CORRECT ANSWER-
Divide discharge pressure by suction pressure (gauge)
What would make ice form around a TEV and possibly cause
the pipe work damage? - CORRECT ANSWER-Short of refrigerant
A refrigeration system contains a refrigerant at a dew point
condition of -25 degrees, you would like? - CORRECT ANSWER-5k of
superheat
