Science Engineering Mechanical Engineering
ESCO Air Conditioning Certification Practice Test Air
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Terms in this set (88)
What is the movement of heat through Radiation
space called?
A refrigerant release heat when It condenses
Why is it desirable for refrigerant in the To insure liquid refrigerant does not enter the compressor
suction line to be slightly superheated?
A 30 pound cylinder of reclaimed R-22 121 psig
refrigerant has been stored over night at 70
degrees F. What should be the
approximate pressure in the cylinder?
14.7 psia( pouds per square inch absolute) Approximately 0 PSIG
is
What is the main fuction of an air condition To remove heat from the refrigerant
condenser?
Refrigerant R-134a vapor enters the 124 psig (the pressure should not change entering or leaving the condenser)
condenser at 124 psig, 100 degrees F. It
leaves the condenser at 80 degreesF. What
will be the approximate pressure?
Which of the following CANNOT be used Crankcase regulating valve
as a low ambient temperature control?
When testing the efficiency of a (10 seer Approximately 30 degrees F
are lower) air cooled condenser, the
refrigerant condensing temperature should
be no more than_______ higher than the
entering air temperature
, When testing the efficiency of a water 10 degrees F
cooled condenser, the refrigerant
condensing temperature should be no
more _____ higher than the leaving water
temperature.
What does a temperature differential Restricted filter-drier
across a filter-drier indicate?
Which of the following symptoms would be Reduce heat transfer through the walls of the coil
indicative of an oil logged evaporator?
When using an electronic leak detecto, the should be moved at approximately 1 inch per second
sensor probe
Before a vapor / compression system is the refrigerant must be recovered using approved equipment
opened for service
What is the minimum vertical drop from the 3 inches
outlet of the condensate drain pan to the
inlet of the P trap when the evaporator is
ahead of the blower?
The temperature rise method of electric resistive heat air handler
determining air volume CFM is mostly used
with a/an;
What is a sling psychrometer used to wet and dry bulb temperature
measure
A compressor is operating with a discharge 5:1 (235.3+14.7=250) and (35.3+14.7=50) so 250/5=5
pressure of 235.3 psig and a suction
pressure of 35.3 psig. What is the
compression ratio (pumping ratio)?
What method does hot gas bypass refer Capacity control
to?
IF a TEV sensing bulb has lost of its charge, It would cause the low side pressure to decrease
What effect would this have on the air
conditioning system
An increase in water flow, when using a decrease the operating discharge pressure
water cooled condenser, would
The clearance space in reciprocating has an effect on compressor capacity
compressor
What is used to control the flow of water A water regulating valve
on a water-cooled condenser?
How should metallic vibration eliminators parallel to the compressor crankshaft
be installed on a system which uses a
reciprocating compressor?
The total amount of heat contained in one enthalpy
pound of a substance calculated from an
accepted temperature base is called
If non-condensables are trapped in a Increased heat build-up, high amperage and high discharge pressure.
condenser, what symptoms will be
present?
ESCO Air Conditioning Certification Practice Test Air
conditioning Certification practice test | Latest Already
Graded A+ UPDATE 2025|2026!!
Leave the first rating
Save
Students also studied
JLTV TEST "A" HEAVY TRUCK BRAKES MICHIGAN ... Aviation Test 3 Bmw m
50 terms Teacher 50 terms Teacher 25 terms Teacher
Olivia_Nduku Preview Magentanes Preview lizzmoses724 Preview Ron
Terms in this set (88)
What is the movement of heat through Radiation
space called?
A refrigerant release heat when It condenses
Why is it desirable for refrigerant in the To insure liquid refrigerant does not enter the compressor
suction line to be slightly superheated?
A 30 pound cylinder of reclaimed R-22 121 psig
refrigerant has been stored over night at 70
degrees F. What should be the
approximate pressure in the cylinder?
14.7 psia( pouds per square inch absolute) Approximately 0 PSIG
is
What is the main fuction of an air condition To remove heat from the refrigerant
condenser?
Refrigerant R-134a vapor enters the 124 psig (the pressure should not change entering or leaving the condenser)
condenser at 124 psig, 100 degrees F. It
leaves the condenser at 80 degreesF. What
will be the approximate pressure?
Which of the following CANNOT be used Crankcase regulating valve
as a low ambient temperature control?
When testing the efficiency of a (10 seer Approximately 30 degrees F
are lower) air cooled condenser, the
refrigerant condensing temperature should
be no more than_______ higher than the
entering air temperature
, When testing the efficiency of a water 10 degrees F
cooled condenser, the refrigerant
condensing temperature should be no
more _____ higher than the leaving water
temperature.
What does a temperature differential Restricted filter-drier
across a filter-drier indicate?
Which of the following symptoms would be Reduce heat transfer through the walls of the coil
indicative of an oil logged evaporator?
When using an electronic leak detecto, the should be moved at approximately 1 inch per second
sensor probe
Before a vapor / compression system is the refrigerant must be recovered using approved equipment
opened for service
What is the minimum vertical drop from the 3 inches
outlet of the condensate drain pan to the
inlet of the P trap when the evaporator is
ahead of the blower?
The temperature rise method of electric resistive heat air handler
determining air volume CFM is mostly used
with a/an;
What is a sling psychrometer used to wet and dry bulb temperature
measure
A compressor is operating with a discharge 5:1 (235.3+14.7=250) and (35.3+14.7=50) so 250/5=5
pressure of 235.3 psig and a suction
pressure of 35.3 psig. What is the
compression ratio (pumping ratio)?
What method does hot gas bypass refer Capacity control
to?
IF a TEV sensing bulb has lost of its charge, It would cause the low side pressure to decrease
What effect would this have on the air
conditioning system
An increase in water flow, when using a decrease the operating discharge pressure
water cooled condenser, would
The clearance space in reciprocating has an effect on compressor capacity
compressor
What is used to control the flow of water A water regulating valve
on a water-cooled condenser?
How should metallic vibration eliminators parallel to the compressor crankshaft
be installed on a system which uses a
reciprocating compressor?
The total amount of heat contained in one enthalpy
pound of a substance calculated from an
accepted temperature base is called
If non-condensables are trapped in a Increased heat build-up, high amperage and high discharge pressure.
condenser, what symptoms will be
present?
