2023 Modern Airflow and Duct Design Day 2 Test

Time limit: 0

Quiz Summary

0 of 36 Questions completed

Questions:

Information

You have already completed the quiz before. Hence you can not start it again.

Quiz is loading…

You must sign in or sign up to start the quiz.

You must first complete the following:

Results

Quiz complete. Results are being recorded.

Results

0 of 36 Questions answered correctly

Your time:

Time has elapsed

You have reached 0 of 0 point(s), (0)

Earned Point(s): 0 of 0, (0)
0 Essay(s) Pending (Possible Point(s): 0)

Categories

Not categorized 0%

There is no pass/fail on the day 1 quiz therefore no score will be displayed. You should be able to see the number of questions you answered correctly.

Current
Review
Answered
Correct
Incorrect

Question 1 of 36

1. Question

What does ASHRAE stand for?

American Society of Helper, Refrigeration, Air-Conditioning Employees
Correct Incorrect Correct answer

All-around Society of Heating, Refrigerant, Air-Conditioning Engineers
Correct Incorrect Correct answer

American Society of Heating, Refrigerating, Air-Conditioning Engineers
Correct Incorrect Correct answer

American Society of Heating, Refrigeration, Air-Conditioning Equipment
Correct Incorrect Correct answer

Correct

Incorrect
Question 2 of 36

2. Question

A book covering Air Distribution for Residential and Small Commercial Buildings is the definition for what?

ACCA Manual T
Correct Incorrect Correct answer

AACA Manual D
Correct Incorrect Correct answer

ACCA Manual J
Correct Incorrect Correct answer

ACCA Manual S
Correct Incorrect Correct answer

Correct

Incorrect
Question 3 of 36

3. Question

Static Pressure is?

What your wife gives you
Correct Incorrect Correct answer

The flow of air in the ductwork
Correct Incorrect Correct answer

The pressure of the velocity in the system
Correct Incorrect Correct answer

The resistance to airflow in ductwork or other components that creates an outward force of pressure in the duct system.
Correct Incorrect Correct answer

Correct

Incorrect
Question 4 of 36

4. Question

AACA Manual D covers items related to __________________.

Residential Equipment Sizing
Correct Incorrect Correct answer

Residential Load Calculations
Correct Incorrect Correct answer

Residential Duct Design
Correct Incorrect Correct answer

Air Distribution for Residential and Small Commercial Buildings
Correct Incorrect Correct answer

Correct

Incorrect
Question 5 of 36

5. Question

What does CF stand for?

Correction Factor
Correct Incorrect Correct answer

Cooling Feature
Correct Incorrect Correct answer

Cooling Function
Correct Incorrect Correct answer

Cooling Factor
Correct Incorrect Correct answer

Cubic Feet
Correct Incorrect Correct answer

Correct

Incorrect
Question 6 of 36

6. Question

What are the recommended velocities for a supply duct ran in flex according to Manual D?

700 – 900
Correct Incorrect Correct answer

600 – 900
Correct Incorrect Correct answer

600 – 700
Correct Incorrect Correct answer

600 – 650
Correct Incorrect Correct answer

Correct

Incorrect
Question 7 of 36

7. Question

What are the recommended velocities for a return branch in flex duct according to Manual D?

600 – 700
Correct Incorrect Correct answer

600 – 600
Correct Incorrect Correct answer

400 – 600
Correct Incorrect Correct answer

400 – 700
Correct Incorrect Correct answer

Correct

Incorrect
Question 8 of 36

8. Question

What are the recommended velocities for a return trunk in metal duct according to Manual D?

600 – 700
Correct Incorrect Correct answer

600 – 600
Correct Incorrect Correct answer

400 – 600
Correct Incorrect Correct answer

400 – 700
Correct Incorrect Correct answer

Correct

Incorrect
Question 9 of 36

9. Question

If a 10′ piece of duct is only stretched to 8′ 6″ what is the compression percentage?

30% Compression
Correct Incorrect Correct answer

4% Compression
Correct Incorrect Correct answer

No Compression
Correct Incorrect Correct answer

10% Compression
Correct Incorrect Correct answer

15% Compression
Correct Incorrect Correct answer

Correct

Incorrect
Question 10 of 36

10. Question

What is the minimum span between hangers and allowable sag in flex duct?

4 feet and 2 inches
Correct Incorrect Correct answer

4 feet and 1/2 inch
Correct Incorrect Correct answer

5 feet and 1 inch
Correct Incorrect Correct answer

5 feet and 1/2 inch
Correct Incorrect Correct answer

Correct

Incorrect
Question 11 of 36

11. Question

Fan Performance depends on?

RPM
Correct Incorrect Correct answer

CFM
Correct Incorrect Correct answer

Filter
Correct Incorrect Correct answer

Static Pressure
Correct Incorrect Correct answer

Inlet Velocity
Correct Incorrect Correct answer

Outlet Velocity
Correct Incorrect Correct answer

Correct

Incorrect
Question 12 of 36

12. Question

What is the maximum available static pressure on an FB4C Fan Coil?

1.0 inches of W.C.
Correct Incorrect Correct answer

.50 Inches of W.C.
Correct Incorrect Correct answer

Depends on the fan speed selected
Correct Incorrect Correct answer

.60 Inches of W.C.
Correct Incorrect Correct answer

Correct

Incorrect
Question 13 of 36

13. Question

What is the manufacturers design static pressure for HVAC systems?

1.0 inches of W.C.
Correct Incorrect Correct answer

.20 Inches of W.C.
Correct Incorrect Correct answer

.50 Inches of W.C.
Correct Incorrect Correct answer

.80 Inches of W.C.
Correct Incorrect Correct answer

Correct

Incorrect
Question 14 of 36

14. Question

Are you really doing your job if you fail to measure static pressure every time you service a unit?

Yes
Correct Incorrect Correct answer

No
Correct Incorrect Correct answer

Correct

Incorrect
Question 15 of 36

15. Question

Should duct systems be sealed before you check static pressure?

Yes
Correct Incorrect Correct answer

No, if you calculate the amount of leakage you have
Correct Incorrect Correct answer

No one has time
Correct Incorrect Correct answer

No
Correct Incorrect Correct answer

Correct

Incorrect
Question 16 of 36

16. Question

You should measure static pressure at the ______ of your service call?

Beginning
Correct Incorrect Correct answer

Middle
Correct Incorrect Correct answer

End
Correct Incorrect Correct answer

Correct

Incorrect
Question 17 of 36

17. Question

All supply registers are created equally across all manufactures? IE: same size = same performance

True
Correct Incorrect Correct answer

False
Correct Incorrect Correct answer

Correct

Incorrect
Question 18 of 36

18. Question

When testing a gas furnace for T.E.S.P, at what 2 points should you check?

After the filter and in the supply plenum before any takeoffs
Correct Incorrect Correct answer

After the filter and before the coil
Correct Incorrect Correct answer

In the return plenum and in the supply plenum
Correct Incorrect Correct answer

Before the filter and before the coil
Correct Incorrect Correct answer

Correct

Incorrect
Question 19 of 36

19. Question

When selecting your supply registers, you should consider the following?

Size of register
Correct Incorrect Correct answer

Total CFM
Correct Incorrect Correct answer

Face velocity
Correct Incorrect Correct answer

Throw
Correct Incorrect Correct answer

Pressure loss
Correct Incorrect Correct answer

All of the above
Correct Incorrect Correct answer

Correct

Incorrect
Question 20 of 36

20. Question

When designing a system for installation, it is important to know what filter is going to be installed?

True
Correct Incorrect Correct answer

False
Correct Incorrect Correct answer

It doesn't really matter as long as there is a filter installed
Correct Incorrect Correct answer

The filter isn't critical to the system design
Correct Incorrect Correct answer

Correct

Incorrect
Question 21 of 36

21. Question

It is important to “benchmark” every new system you install?

Yes
Correct Incorrect Correct answer

No
Correct Incorrect Correct answer

Correct

Incorrect
Question 22 of 36

22. Question

What are the methods used to check/verify airflow or CFM supplied by the furnace or fan coil?

Temp rise method
Correct Incorrect Correct answer

Clock the gas meter
Correct Incorrect Correct answer

Static pressure test
Correct Incorrect Correct answer

Look at Product Data
Correct Incorrect Correct answer

Look at operating status in the User Interface
Correct Incorrect Correct answer

Correct

Incorrect
Question 23 of 36

23. Question

What is the correct formula for measuring airflow on a fan coil with resistant heat?

Volts x Amps x 3.414 / Delta T (temp rise) = CFM
Correct Incorrect Correct answer

Volts x Amps x 3.414 / 1.08 x Delta T (temp rise) = CFM
Correct Incorrect Correct answer

Volts x Amps x 3.414 / 1.08 / Delta T (temp rise) – 50 = CFM
Correct Incorrect Correct answer

BTUH Output / 1.08 x Temp rise
Correct Incorrect Correct answer

Look at operating status in the User Interface
Correct Incorrect Correct answer

Correct

Incorrect
Question 24 of 36

24. Question

Volts x Amperes =

CFM
Correct Incorrect Correct answer

BTUH
Correct Incorrect Correct answer

Watts
Correct Incorrect Correct answer

Capacitance
Correct Incorrect Correct answer

Correct

Incorrect
Question 25 of 36

25. Question

1 Watt =

3.101 BTU's
Correct Incorrect Correct answer

2.414 BTU's
Correct Incorrect Correct answer

3.616 BTU's
Correct Incorrect Correct answer

3.414 BTU's
Correct Incorrect Correct answer

Correct

Incorrect
Question 26 of 36

26. Question

When getting your supply air temperatures for measuring airflow, it is best to take the measurement ____________?

In the supply plenum
Correct Incorrect Correct answer

In the supply plenum directly above heat strips
Correct Incorrect Correct answer

In the supply plenum and not in line of sight of the heat strips
Correct Incorrect Correct answer

At 6 of the supply registers and average them together
Correct Incorrect Correct answer

Correct

Incorrect

Question 27 of 36

27. Question

Use the formula below and select the correct answer for the airflow on this fan coil.

CFM = BTUH Output/(temp difference x 1.08)
1 Watt = 3.414 BTUs
Volts x Amps = Watts

Measured voltage is 242vac
Measured amps are 39
Supply temperature is 109°
Return temperature is 72°

1230 CFM

Correct Incorrect Correct answer

1006 CFM

Correct Incorrect Correct answer

750 CFM

Correct Incorrect Correct answer

806 CFM

Correct Incorrect Correct answer

Correct

Incorrect

Question 28 of 36

28. Question

What are 2 ways to verify the BTUH input on a gas furnace?

Clock the gas meter
Correct Incorrect Correct answer

Look at data tag
Correct Incorrect Correct answer

Measure manifold pressure
Correct Incorrect Correct answer

Check the Product Data
Correct Incorrect Correct answer

Correct

Incorrect
Question 29 of 36

29. Question

What is the correct formula for measuring airflow on a gas furnace?

BTUH Output / 1.08 x Temp rise
Correct Incorrect Correct answer

Volts x Amps x 3.414 / 1.08 x Delta T (temp rise) = CFM
Correct Incorrect Correct answer

BTUH Input / 1.08 x Temp rise
Correct Incorrect Correct answer

Correct

Incorrect

Question 30 of 36

30. Question

Use the formula and select the correct answer for calculating airflow of a gas furnace.

CFM = BTUH Output/(temp difference x 1.08)
1 Watt = 3.414 BTUs
Volts x Amps = Watts

BTUH Input is 110,000
BTUH Output is 88,000
Supply temperature is 122°
Return temperature is 72°

1630 CFM

Correct Incorrect Correct answer

1760 CFM

Correct Incorrect Correct answer

1680 CFM

Correct Incorrect Correct answer

1825 CFM

Correct Incorrect Correct answer

Correct

Incorrect

Question 31 of 36

31. Question

The best methods to measure and determine the CFM produced by a package unit is to __________?

Look at the VFD
Correct Incorrect Correct answer

Measure RPM's and refer to the Blower Table
Correct Incorrect Correct answer

Check Static Pressures and refer to the Blower Table
Correct Incorrect Correct answer

Look at the unit data tag
Correct Incorrect Correct answer

Correct

Incorrect
Question 32 of 36

32. Question

When measuring static pressure it is critical the the positive + and negative – numbers get added or subtracted properly accordingly to the formula?

FALSE
Correct Incorrect Correct answer

TRUE
Correct Incorrect Correct answer

Correct

Incorrect
Question 33 of 36

33. Question

If you have a package unit with a belt driven blower, it is “OK” to install a larger blower sheave to get increased airflow?

In some cases yes, you have to consider the blower motor amps (old and new), static pressure (old and new) and the duct work capability
Correct Incorrect Correct answer

NO, Never
Correct Incorrect Correct answer

Yes, everything else will be fine
Correct Incorrect Correct answer

You can only install a smaller blower sheave and never a larger one
Correct Incorrect Correct answer

Correct

Incorrect
Question 34 of 36

34. Question

All duct taps are created equally and have no effect on the system performance in regards to airflow delivery?

TRUE
Correct Incorrect Correct answer

FALSE
Correct Incorrect Correct answer

Correct

Incorrect
Question 35 of 36

35. Question

What year did FER (fan energy ratings) go into effect?

2019
Correct Incorrect Correct answer

2018
Correct Incorrect Correct answer

2020
Correct Incorrect Correct answer

2021
Correct Incorrect Correct answer

Correct

Incorrect
Question 36 of 36

36. Question

PSC motors are still being used in new furnaces being manufactured today?

TRUE
Correct Incorrect Correct answer

FALSE
Correct Incorrect Correct answer

Correct

Incorrect

2023 Modern Airflow and Duct Design Day 2 Test

Quiz Summary

Information

Results

Results

Categories

1. Question

2. Question

3. Question

4. Question

5. Question

6. Question

7. Question

8. Question

9. Question

10. Question

11. Question

12. Question

13. Question

14. Question

15. Question

16. Question

17. Question

18. Question

19. Question

20. Question

21. Question

22. Question

23. Question

24. Question

25. Question

26. Question

27. Question

28. Question

29. Question

30. Question

31. Question

32. Question

33. Question

34. Question

35. Question

36. Question