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. Square sheet metal duct is normally fabricated in a sheet metal shop and assembled in the field. (True or False)
20 degrees F
True
A diffuser
95 degrees F outside - 80 degrees F inside - and 50% relative humidity

2. When do you install a trap on a drain line?
When it is a pull-through evaporator
Outside of the male fitting
Negative
Standard

3. What tool is used to expand the diameter of soft copper tubing
Dehydrated with caps on each end
100
A piston type metering device
A swaging tool

4. 10 SEER is classified as what kind of efficiency?
Belt drive and direct drive
Subtract ambient temperature from 100
When it is a pull-through evaporator
Standard

5. What are normal conditions - as defined by the ARI.
40 degrees F
150
95 degrees F outside - 80 degrees F inside - and 50% relative humidity
300

6. Superheat should never be below how many degrees
False
Negative
2
5 degrees

7. How are round ducts connected to one another?
With a minimum of three evenly spaced self-tapping screws
They are larger
Sheet metal - galvanized sheet metal - fiberglass - and flexduct
Pull a vacuum

8. How much does a drain line need to drop per foot of length?

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

9. How are the condenser coils different on a high-efficiency unit?
No
Positive
40 degrees F
They are larger

10. A reciprocating compressor has what sort of moving parts?
Pistons
45-55%
Yes
By increasing the surface of the condenser coil

11. What standard weight copper tubing is most often used in the heating and air-conditioning industry?
L-type
Yes
TXV
The takeoff fitting

12. Multiple-zone systems often use what to alleviate the problem of excess air when only some zones are calling for conditioning?
Positive
They are larger
With a minimum of three evenly spaced self-tapping screws
A bypass duct or a dump zone

13. How are round ducts supported?

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

14. What tool is used to expand the diameter of soft copper tubing
To lower the amount of pressure drop through the coil
A piston type metering device
105 degrees F
A swaging tool

15. At what temperature does refrigerant condense in a standard-efficiency unit?
30-35 degrees above ambient
6
105 degrees F
With an are rating

16. What is the typical temperature difference between a standard-efficiency condenser and the ambient temperature?
20 A
30 degrees F
Fiberglass
Sheet metal - galvanized sheet metal - fiberglass - and flexduct

17. Superheat should never be below how many degrees
5 degrees
RLA/FLA x 5
In parallel
A bypass duct or a dump zone

18. What are the two basic duct connection configurations for package units supply and return air ducts?
Average feet per minute X area in square feet (H' x W'/144)
4
Positive
Over/under and side by side

19. Which type of wire can handle a higher ampacity?
Stranded
It will have a decrease in superheat
Indoor fan motor - outdoor fan motor - and the compressor
Pi x radius squared

20. Why are some ACR tubing lines insulated?
To keep refrigerant from absorbing heat and to prevent condensation from forming on the line
It will be high
Stranded
12000

21. If the rpm's are 3450 - how many poles does the motor have?
SEER includes the energy used in the start-up and shut-down cycles
2
Suction
It rises

22. If the rpm's are 1750 - how many poles does the motor have?
4
The takeoff fitting
Heat load
Sheet metal - galvanized sheet metal - fiberglass - and flexduct

23. What sort of pressure will a push-through evaporator have?
30 degrees F
6
Positive
Potential relay and start capacitor

24. At what temperature will soft solder melt?
Slugging
20 A
They are physically larger
Below 800 degrees F

25. Do you need a vent on a push-through evaporator?
A swaging tool
Yes
The takeoff fitting
They are larger

26. 13 SEER is classified as what kind of efficiency?
Over/under and side by side
100
High
100 psig

27. A reciprocating compressor has what sort of moving parts?
Pistons
1/4'
105 degrees F
8

28. Pressure in ductwork is measured In what?
Nitrogen with a small amount of refrigerant
Duct - electrical - and mechanical
Yes
Inches of water column (in. WC)

29. If the suction pressure rises - what happens to the head pressure?
To remove humidity and lower dry bulb temperature
It also rises
Infiltration and ventilation
20 degrees F

30. What standard weight copper tubing is most often used in the heating and air-conditioning industry?
In series
Boil the liquid refrigerant out ot the oil within the crankcase
To lower the amount of pressure drop through the coil
L-type

31. How many amps can 10 g wire handle?
Inches of water column (in. WC)
It will be high
To lower the amount of pressure drop through the coil
30 A

32. When do you install an auxillary drain pan?
When it is above a conditioned space
Infiltration and ventilation
20 A
It rises

33. How many amps can 8 g wire handle?
Individual return air systems and central return air systems
40 A
Static pressure - velocity pressure - and total pressure
An air-conditioning system that has all four components (compressor - condenser - metering device - and evaporator) in one housing.

34. What gauge is thermostat wire?
18 gauge
Outside of the male fitting
Duct with insulation on the inside
Negative

35. What is the difference between SEER and EER?
SEER includes the energy used in the start-up and shut-down cycles
40 degrees F
Blended refrigerants
False

36. What are the two types of package units?
Side-by-side and over-and-under
20 A
Pistons
6

37. How do you achieve high-efficiency?
By increasing the surface of the condenser coil
20 degrees above ambient
Yes
It also rises

38. At what temperature does refrigerant condense in a high-efficiency unit?
TXV
Yes
20 degrees above ambient
400

39. What do you use to check for leaks?
Nitrogen with a small amount of refrigerant
Slugging
Side-by-side and over-and-under
Slugging

40. How do you calculate the area of a circle?
It will be low
Latent and sensible
Pi x radius squared
Nominal-sized tubing

41. What are the components of a hard-start kit?
30 degrees F
Potential relay and start capacitor
A band 4 inches or more in width
Common

42. If the rpm's are 1050 - how many poles does the motor have?
6
It rises
TXV
No

43. How much superheat do you need to prevent liquid refrigerant from entering the compressor?
It will be high
It will be low
1/4'
Any amount

44. What is the typical temperature difference between a high-efficiency condenser and the ambient temperature?
Blended refrigerants
20 degrees F
To remove humidity and lower dry bulb temperature
140 degrees F

45. How will an overcharge affect an air-conditioning system with a fixed-orifice type metering device?
It will have a decrease in superheat
8-12 degrees F
Outside diameter (OD)
With 4' saddles

46. What kind of refrigeratnts must be added in liquid form?
Positive
They are larger
200
Blended refrigerants

47. In what length rolls is soft copper tubing normally available?
Pull a vacuum
Vapor
25-ft or 50-ft
A swaging tool

48. What do you use to check for leaks?
A piston type metering device
A dirty evaporator
Nitrogen with a small amount of refrigerant
To remove humidity and lower dry bulb temperature

49. What is it called when liquid refrigerant gets into the compressor?
Dehydrated with caps on each end
S-clips and drives (cleats)
Slugging
Positive

50. Which is more efficient - a TXV or a fixed-orifice metering device?
Boil the liquid refrigerant out ot the oil within the crankcase
1/4'
20 degrees above ambient
TXV

Sorry!:) No result found.

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

Sorry!:) No result found.

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