Louisiana (New Orleans) Second Class Stationary Air
Conditioning 640 LA Contractor Exam
1. Which choice is most accurate for this requirement?
Open book and eight hours
•
True
☑
False
•
Closed book and four hours
•
Study illustration. Image included for visual grounding; it is not a reproduced exam item.
2. A project supervisor is reviewing this issue. Which answer should be selected?
True
☑
Only business law
•
False
•
Only welding
•
3. During a field inspection, which statement best applies?
True
☑
They are only optional
•
False
•
They are excluded
•
4. Which option correctly reflects the applicable practice?
They are excluded
•
True
☑
Only roofing is tested
•
False
•
5. A contractor wants to stay within the stated requirement. Which choice is correct?
Only the 2021 IRC
•
True
☑
Original practice questions based on publicly available exam scopes and technical references. Not an official exam or recalled question bank. Page 1
, Only a plumbing code
•
False
•
6. Which answer best matches the technical principle involved?
True
☑
It rejects all heat outdoors
•
It only stores refrigerant
•
False
•
7. For exam purposes, which statement should be considered correct?
True
☑
It is a thermostat
•
It only absorbs indoor heat
•
False
•
8. A technician is troubleshooting the situation described. Which choice is the best answer?
True
☑
False
•
It only drains water
•
It only filters air
•
9. Which selection most closely follows the governing practice?
True
☑
False
•
It increases pressure before the evaporator
•
It only measures voltage
•
10. What is the best conclusion based on the requirement?
It has no effect
•
True
☑
It always lowers head pressure
•
False
•
11. On a typical project, Which choice is most accurate for this requirement?
False
•
True
☑
It affects only refrigerant color
•
It increases airflow
•
12. On a typical project, A project supervisor is reviewing this issue. Which answer should be selected?
Original practice questions based on publicly available exam scopes and technical references. Not an official exam or recalled question bank. Page 2
, It only heats water
•
True
☑
It is only a refrigerant valve
•
False
•
13. On a typical project, During a field inspection, which statement best applies?
It cannot switch electrical loads
•
False
•
True
☑
It is only a drain fitting
•
14. On a typical project, Which option correctly reflects the applicable practice?
False
•
True
☑
It is only a filter
•
It measures refrigerant purity
•
15. On a typical project, A contractor wants to stay within the stated requirement. Which choice is
correct?
False
•
It always increases capacity
•
True
☑
It cannot affect pressures
•
16. On a typical project, Which answer best matches the technical principle involved?
True
☑
It improves lubrication
•
It is the preferred compression condition
•
False
•
17. On a typical project, For exam purposes, which statement should be considered correct?
It measures voltage
•
True
☑
False
•
It is unrelated to refrigerant state
•
18. On a typical project, A technician is troubleshooting the situation described. Which choice is the
best answer?
It measures motor speed
•
True
☑
It is only a duct measurement
•
Original practice questions based on publicly available exam scopes and technical references. Not an official exam or recalled question bank. Page 3
, False
•
19. On a typical project, Which selection most closely follows the governing practice?
True
☑
False
•
Leaks never need repair
•
Repeated topping off is always best
•
20. On a typical project, What is the best conclusion based on the requirement?
Recovery rules do not apply
•
True
☑
False
•
Refrigerant may be vented freely
•
21. For a code or practice review, Which choice is most accurate for this requirement?
False
•
It only affects voltage
•
It increases heat transfer intentionally
•
True
☑
22. For a code or practice review, A project supervisor is reviewing this issue. Which answer should be
selected?
Drain design never matters
•
True
☑
False
•
Condensate should always remain in the pan
•
23. For a code or practice review, During a field inspection, which statement best applies?
False
•
True
☑
Verification is prohibited
•
Power should remain energized
•
24. For a code or practice review, Which option correctly reflects the applicable practice?
True
☑
Only refrigerant affects motors
•
Capacitors cannot affect motors
•
False
•
25. For a code or practice review, A contractor wants to stay within the stated requirement. Which
choice is correct?
Original practice questions based on publicly available exam scopes and technical references. Not an official exam or recalled question bank. Page 4
Conditioning 640 LA Contractor Exam
1. Which choice is most accurate for this requirement?
Open book and eight hours
•
True
☑
False
•
Closed book and four hours
•
Study illustration. Image included for visual grounding; it is not a reproduced exam item.
2. A project supervisor is reviewing this issue. Which answer should be selected?
True
☑
Only business law
•
False
•
Only welding
•
3. During a field inspection, which statement best applies?
True
☑
They are only optional
•
False
•
They are excluded
•
4. Which option correctly reflects the applicable practice?
They are excluded
•
True
☑
Only roofing is tested
•
False
•
5. A contractor wants to stay within the stated requirement. Which choice is correct?
Only the 2021 IRC
•
True
☑
Original practice questions based on publicly available exam scopes and technical references. Not an official exam or recalled question bank. Page 1
, Only a plumbing code
•
False
•
6. Which answer best matches the technical principle involved?
True
☑
It rejects all heat outdoors
•
It only stores refrigerant
•
False
•
7. For exam purposes, which statement should be considered correct?
True
☑
It is a thermostat
•
It only absorbs indoor heat
•
False
•
8. A technician is troubleshooting the situation described. Which choice is the best answer?
True
☑
False
•
It only drains water
•
It only filters air
•
9. Which selection most closely follows the governing practice?
True
☑
False
•
It increases pressure before the evaporator
•
It only measures voltage
•
10. What is the best conclusion based on the requirement?
It has no effect
•
True
☑
It always lowers head pressure
•
False
•
11. On a typical project, Which choice is most accurate for this requirement?
False
•
True
☑
It affects only refrigerant color
•
It increases airflow
•
12. On a typical project, A project supervisor is reviewing this issue. Which answer should be selected?
Original practice questions based on publicly available exam scopes and technical references. Not an official exam or recalled question bank. Page 2
, It only heats water
•
True
☑
It is only a refrigerant valve
•
False
•
13. On a typical project, During a field inspection, which statement best applies?
It cannot switch electrical loads
•
False
•
True
☑
It is only a drain fitting
•
14. On a typical project, Which option correctly reflects the applicable practice?
False
•
True
☑
It is only a filter
•
It measures refrigerant purity
•
15. On a typical project, A contractor wants to stay within the stated requirement. Which choice is
correct?
False
•
It always increases capacity
•
True
☑
It cannot affect pressures
•
16. On a typical project, Which answer best matches the technical principle involved?
True
☑
It improves lubrication
•
It is the preferred compression condition
•
False
•
17. On a typical project, For exam purposes, which statement should be considered correct?
It measures voltage
•
True
☑
False
•
It is unrelated to refrigerant state
•
18. On a typical project, A technician is troubleshooting the situation described. Which choice is the
best answer?
It measures motor speed
•
True
☑
It is only a duct measurement
•
Original practice questions based on publicly available exam scopes and technical references. Not an official exam or recalled question bank. Page 3
, False
•
19. On a typical project, Which selection most closely follows the governing practice?
True
☑
False
•
Leaks never need repair
•
Repeated topping off is always best
•
20. On a typical project, What is the best conclusion based on the requirement?
Recovery rules do not apply
•
True
☑
False
•
Refrigerant may be vented freely
•
21. For a code or practice review, Which choice is most accurate for this requirement?
False
•
It only affects voltage
•
It increases heat transfer intentionally
•
True
☑
22. For a code or practice review, A project supervisor is reviewing this issue. Which answer should be
selected?
Drain design never matters
•
True
☑
False
•
Condensate should always remain in the pan
•
23. For a code or practice review, During a field inspection, which statement best applies?
False
•
True
☑
Verification is prohibited
•
Power should remain energized
•
24. For a code or practice review, Which option correctly reflects the applicable practice?
True
☑
Only refrigerant affects motors
•
Capacitors cannot affect motors
•
False
•
25. For a code or practice review, A contractor wants to stay within the stated requirement. Which
choice is correct?
Original practice questions based on publicly available exam scopes and technical references. Not an official exam or recalled question bank. Page 4
