NATE AC Service Certification EXAM NEWEST ACTUAL EXAM COMPLETE A
QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS)
Study online at https://quizlet.com/_hm7m8o
1. A system is supplied from the factory with charge of 5 D. 6 pounds
pounds 10 ounces for a 15 foot line set. The line set
is 25 feet long. The manufacturer's instruction sheet 15ft - 25ft = 10ft x .6 = 6
specifies 0.6 ounces of refrigeration to be added for ounces
each added foot of refrigerant line set length. What is 5 pounds + 10 ounces + 6
the total refrigerant charge for the system? ounces
5 pounds + 16 ounces = 6
A. 6 ounces pounds
B. 5 pounds
C. 5 pounds 10 ounces
D. 6 pounds
2. The purpose of using flux when soldering is to: C. reduce oxidation.
A. anneal the surface.
B. give better heat flow.
C. reduce oxidation.
D. pre-seal the oxidation.
3. Outdoor condensing units that are installed in areas A. be mounted above flood
where flooding is possible must: level.
A. be mounted above flood level.
B. utilize NEMA 1 enclosures.
C. be mounted under an overhanging eave.
D. use water resistant components.
4. The component used to reduce sound transmission A. curb gasket.
and prevent water leaks on a rooftop air conditioner
packaged unit installation is the:
A. curb gasket.
, NATE AC Service Certification EXAM NEWEST ACTUAL EXAM COMPLETE A
QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS)
Study online at https://quizlet.com/_hm7m8o
B. silicone caulk.
C. roof flashing.
D. roofing tar.
5. Return air leakage in a hot attic will: B. Decrease capacity
A. Increase capacity
B. Decrease capacity
C. Increase airflow
D. Decrease airflow
6. An air conditioner refrigerant circuit should be evacu- C. 500 microns.
ated to a minimum of:
A. 0 microns.
B. 200 microns.
C. 500 microns.
D. 1200 microns.
7. Which of the following substances could create an ex- D. Carbon Dioxide
tremely dangerous condition if used to check refriger-
ation system for leaks?
A. R-22
B. Nitrogen
C. Oxygen
D. Carbon Dioxide
8. The subcooling method for checking charge is gener- B. Any thermostatic expan-
ally used on air conditioners with what type of meter- sion valve
ing?
, NATE AC Service Certification EXAM NEWEST ACTUAL EXAM COMPLETE A
QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS)
Study online at https://quizlet.com/_hm7m8o
A. Only externally equalized thermostatic expansion
valves
B. Any thermostatic expansion valve
C. Piston type
D. Any fixed metering device
9. Supply ducts running through unconditioned space C. a vapor barrier.
should be insulated and have:
A. equal friction.
B. excessive air velocity.
C. a vapor barrier.
D. a transition backing.
10. An important consideration when installing a motor- C. the vanes operate with-
ized economizer is to check to be certain that: out binding.
A. the vanes are set for a maximum 10% outdoor air.
B. the vanes open on any call for cooling.
C. the vanes operate without binding.
D. the vanes are permanently set at 50%.
11. On a 3 ton unit installation, the measure airflow equals C. Excess airflow(400cfm
1550 CFM. What does this indicate? per ton, 3 ton=1200cfm)
A. Proper balancing
B. Low Airflow
C. Excess airflow
D. Improper balancing
12. Electronic type leak detectors typically have a
push-button or knob for setting a reference refrigerant
QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS)
Study online at https://quizlet.com/_hm7m8o
1. A system is supplied from the factory with charge of 5 D. 6 pounds
pounds 10 ounces for a 15 foot line set. The line set
is 25 feet long. The manufacturer's instruction sheet 15ft - 25ft = 10ft x .6 = 6
specifies 0.6 ounces of refrigeration to be added for ounces
each added foot of refrigerant line set length. What is 5 pounds + 10 ounces + 6
the total refrigerant charge for the system? ounces
5 pounds + 16 ounces = 6
A. 6 ounces pounds
B. 5 pounds
C. 5 pounds 10 ounces
D. 6 pounds
2. The purpose of using flux when soldering is to: C. reduce oxidation.
A. anneal the surface.
B. give better heat flow.
C. reduce oxidation.
D. pre-seal the oxidation.
3. Outdoor condensing units that are installed in areas A. be mounted above flood
where flooding is possible must: level.
A. be mounted above flood level.
B. utilize NEMA 1 enclosures.
C. be mounted under an overhanging eave.
D. use water resistant components.
4. The component used to reduce sound transmission A. curb gasket.
and prevent water leaks on a rooftop air conditioner
packaged unit installation is the:
A. curb gasket.
, NATE AC Service Certification EXAM NEWEST ACTUAL EXAM COMPLETE A
QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS)
Study online at https://quizlet.com/_hm7m8o
B. silicone caulk.
C. roof flashing.
D. roofing tar.
5. Return air leakage in a hot attic will: B. Decrease capacity
A. Increase capacity
B. Decrease capacity
C. Increase airflow
D. Decrease airflow
6. An air conditioner refrigerant circuit should be evacu- C. 500 microns.
ated to a minimum of:
A. 0 microns.
B. 200 microns.
C. 500 microns.
D. 1200 microns.
7. Which of the following substances could create an ex- D. Carbon Dioxide
tremely dangerous condition if used to check refriger-
ation system for leaks?
A. R-22
B. Nitrogen
C. Oxygen
D. Carbon Dioxide
8. The subcooling method for checking charge is gener- B. Any thermostatic expan-
ally used on air conditioners with what type of meter- sion valve
ing?
, NATE AC Service Certification EXAM NEWEST ACTUAL EXAM COMPLETE A
QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS)
Study online at https://quizlet.com/_hm7m8o
A. Only externally equalized thermostatic expansion
valves
B. Any thermostatic expansion valve
C. Piston type
D. Any fixed metering device
9. Supply ducts running through unconditioned space C. a vapor barrier.
should be insulated and have:
A. equal friction.
B. excessive air velocity.
C. a vapor barrier.
D. a transition backing.
10. An important consideration when installing a motor- C. the vanes operate with-
ized economizer is to check to be certain that: out binding.
A. the vanes are set for a maximum 10% outdoor air.
B. the vanes open on any call for cooling.
C. the vanes operate without binding.
D. the vanes are permanently set at 50%.
11. On a 3 ton unit installation, the measure airflow equals C. Excess airflow(400cfm
1550 CFM. What does this indicate? per ton, 3 ton=1200cfm)
A. Proper balancing
B. Low Airflow
C. Excess airflow
D. Improper balancing
12. Electronic type leak detectors typically have a
push-button or knob for setting a reference refrigerant
