Test your basic knowledge |

Residential Air Conditioning

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. What are the three ways a motor can fail electrically?
8
Shorted winding - open winding - and grounded winding
Any amount
Individual return air systems and central return air systems

2. What is the range for normal superheat and subcooling?
Common
95 degrees F outside - 80 degrees F inside - and 50% relative humidity
8-12 degrees F
It will be high

3. Superheat should never be below how many degrees
Standard
5 degrees
Pistons
Yes

4. How is ACR tubing sized?
Yes
By increasing the surface of the condenser coil
Outside diameter (OD)
They are larger

5. What are the three ways a motor can fail electrically?
High
By increasing the surface of the condenser coil
Shorted winding - open winding - and grounded winding
15 A

6. At what temperature will brazing melt?
Fiberglass
45-55%
Over 800 degrees F
When the system is under pressure

7. The evaporator is designed to remove what two types of heat?
20 A
Potential relay and start capacitor
Latent and sensible
Boil the liquid refrigerant out ot the oil within the crankcase

8. What tool is used to expand the diameter of soft copper tubing
1/4'
A swaging tool
Dehydrated with caps on each end
25-ft or 50-ft

9. How will too much refrigerant effect superheat?
On the common terminal
Slugging
It will be low
Over/under and side by side

10. What are normal conditions - as defined by the ARI.
When the system is under pressure
95 degrees F outside - 80 degrees F inside - and 50% relative humidity
12000
40 degrees F

11. How long should you leave a system off once you kill power before restarting it?
400
Over 800 degrees F
TXV
2 minutes

12. At what temperature will brazing melt?
Over 800 degrees F
12000
RLA/FLA x 5
ACR (air-conditioning refrigeration) tubing

13. The fan switch closes at what temperature?
Infiltration and ventilation
Belt drive and direct drive
140 degrees F
Suction

14. What type of air conditioning system must be charged using the superheat method?
2 minutes
Side-by-side and over-and-under
A piston type metering device
100 psig

15. What are the three pressures created by moving air in ductwork?
With a minimum of three evenly spaced self-tapping screws
Side-by-side and over-and-under
Static pressure - velocity pressure - and total pressure
When it is above a conditioned space

16. What standard weight copper tubing is most often used in the heating and air-conditioning industry?
Side-by-side and over-and-under
SEER includes the energy used in the start-up and shut-down cycles
20 degrees F
L-type

17. Do you need a vent on a push-through evaporator?
Yes
15% silphos
No
A piston type metering device

18. How are round ducts supported?

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183

19. How many amps can 12 g wire handle?
When it is above a conditioned space
20 A
Btu/hr (output) / wattage (input)
False

20. What kind of copper tubing is used for plumbing and heating applications?
25-ft or 50-ft
150
Nominal-sized tubing
8-12 degrees F

21. How is the high pressure switch wired with the low pressure switch?
It will be high
18 gauge
400
In parallel

22. Will a dirty condenser cause a rise or fall in pressure?
8
Rise
Heat load
Sheet metal - galvanized sheet metal - fiberglass - and flexduct

23. How are the high pressure switch and the low pressure switch wired with the compressor contactor?
Dehydrated with caps on each end
Suction
In series
They are physically larger

24. How many amps can 14 g wire handle?
15 A
It will be high
100
Vapor

25. Where do you install a trap on a drain line?
Before the vent
When it is above a conditioned space
Potential relay and start capacitor
Over 800 degrees F

26. When must a copper joint never be soldered or brazed?
Any amount
When the system is under pressure
Standard
False

27. Where do you check the amps on a motor?
4
In series
Pull a vacuum
On the common terminal

28. How many amps can 8 g wire handle?
40 A
It also rises
Suction
Btu/hr (output) / wattage (input)

29. What kind of copper tubing is used for refrigeration or air-conditioning applications?
In parallel
ACR (air-conditioning refrigeration) tubing
Compressor
Yes

30. How do you calculate cfm?

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183

31. How do you achieve high-efficiency?
By increasing the surface of the condenser coil
Nitrogen with a small amount of refrigerant
Average feet per minute X area in square feet (H' x W'/144)
Belt drive and direct drive

32. When do you install a trap on a drain line?
1/4'
When it is a pull-through evaporator
Nitrogen with a small amount of refrigerant
They are larger

33. What is lined duct?
Yes
150
Duct with insulation on the inside
They are larger

34. What is lined duct?
20 A
18 gauge
It will be high
Duct with insulation on the inside

35. How many amps can 12 g wire handle?
With 4' saddles
20 A
400
When the system is under pressure

36. In what state is the refrigerant in the compressor?
Vapor
It will have a decrease in superheat
It rises
Before the vent

37. How is insulation around a duct rated?
With an are rating
To lower the amount of pressure drop through the coil
Fiberglass
Vapor

38. The compressor is cooled by liquid refrigerant. (True of False)
To lower the amount of pressure drop through the coil
A piston type metering device
A piston type metering device
False

39. What kind of refrigeratnts must be added in liquid form?
Blended refrigerants
S-clips and drives (cleats)
400
High

40. 7' round duct has a ballpark cfm of what?
Any amount
150
No
1/4'

41. How do you calculate ballpark superheat?
In series
Subtract ambient temperature from 100
Individual return air systems and central return air systems
They are larger

42. What is considered normal operating conditions?
S-clips and drives (cleats)
75 degrees F dry bulb indoor - 95 degrees F drybulb outdoor - and 50% relative humidity
25-ft or 50-ft
A piston type metering device

43. Will a dirty condenser cause a rise or fall in pressure?
Rise
Fiberglass
Nominal-sized tubing
With a minimum of three evenly spaced self-tapping screws

44. What are normal conditions - as defined by the ARI.
8
The takeoff fitting
95 degrees F outside - 80 degrees F inside - and 50% relative humidity
45-55%

45. On what terminal do you check amperage?
The suction line or the low-pressure side
Yes
Common
It will have a decrease in superheat

46. At what temperature does refrigerant condense in a standard-efficiency unit?
30-35 degrees above ambient
5 degrees
No
It rises

47. What are the components of a hard-start kit?
Potential relay and start capacitor
A dirty evaporator
Yes
S-clips and drives (cleats)

48. What are the two types of package units?
20 degrees F
Inches of water column (in. WC)
High
Side-by-side and over-and-under

49. The fan switch opens at what temperature?
TXV
18 gauge
Stranded
105 degrees F

50. What kind of copper tubing is used for plumbing and heating applications?
Before the vent
Nominal-sized tubing
When it is above a conditioned space
A diffuser

Can you answer 50 questions in 15 minutes?

Major Subjects
Tests & Exams AP CLEP DSST GRE SAT GMAT	Certifications CISSP go to https://www.isc2.org/ PMP ITIL RHCE MCTS More...	IT Skills Android Programming Data Modeling Objective C Programming Basic Python Programming Adobe Illustrator More...	Business Skills Advertising Techniques Business Accounting Basics Business Strategy Human Resource Management Marketing Basics More...
Soft Skills Body Language People Skills Public Speaking Persuasion Job Hunting And Resumes More...	Vocabulary GRE Vocab SAT Vocab TOEFL Essential Vocab Basic English Words For All Global Words You Should Know Business English More...	Languages AP German Vocab AP Latin Vocab SAT Subject Test: French Italian Survival Norwegian Survival More...	Engineering Audio Engineering Computer Science Engineering Aerospace Engineering Chemical Engineering Structural Engineering More...
Health Sciences Basic Nursing Skills Health Science Language Fundamentals Veterinary Technology Medical Language Cardiology Clinical Surgery More...	English Grammar Fundamentals Literary And Rhetorical Vocab Elements Of Style Vocab Introduction To English Major Complete Advanced Sentences Literature Homonyms More...	Math Algebra Formulas Basic Arithmetic: Measurements Metric Conversions Geometric Properties Important Math Facts Number Sense Vocab Business Math More...	Other Major Subjects Science Economics History Law Performing-arts Cooking Logic & Reasoning Trivia

Test your basic knowledge |

Residential Air Conditioning

Can you answer 50 questions in 15 minutes?

Let me suggest you:

Browse all subjects

Browse all tests

Most popular tests

Major Subjects

Tests & Exams

Certifications

IT Skills

Business Skills

Soft Skills

Vocabulary

Languages

Engineering

Health Sciences

English

Math

Other Major Subjects

Browse all subjects

Browse all tests

Most popular tests