Test your basic knowledge |

Plumbing Certification

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. To raise the boom of a crane you would...
Point thumb up
The tubing has been cleaned for oxygen service
3.1416
Waterlogged

2. The pipe fitting that makes a 180 degree turn is called a/an?
8.33 pounds
compression
return fitting
The same ID as the branch

3. What type of expansion joint does NOT utilize mechanical movement?
Insert pipe into fitting and turn 1/4 turn and hold
With the weld at a 45 degree angle
Expansion loop.
Strainer

4. How do you determine gear ratios?

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5. What is Hydronics?
.707
Latent
supporter of combustion
The science of heat transfer using water.

6. What is the welding position 3 - on the electrode mean?
Flat position only
Remove the packing
8.33 pounds
1.25'(inch)

7. What is typically a final control element?
When a large volume of condensate is generated
Climbing the cross braces.
Valve
Saturated

8. What is the standard for an electronic signal?
set point
an eccentric reducer flat on top
4 to 20 milliamps
Prevailing wind speed and direction - environmental concerns - zoning requirements

9. When a flux joint is overheated it will not...
Climbing the cross braces.
4 to 20 milliamps
Fuse
Manometer

10. The pipe that connects the steam header to the boiler return connection is the...
Equalizing line
hydrometer
Softens it
Up and Down

11. What is the purpose of the oxygen and acetylene regulators?
8 5/8'(inch)
true isometric
To reduce the pressure from the cylinders to safe and workable pressures
.7854 x D squared

12. What is the best valve for throttling?
Discharge
Globe
15 Feet
hydrometer

13. Which one of the following measures and takes action?
The tensile strength of the rod in PSI times 1 -000
maximum rated capacity
Controller
the type of coating and current

14. The last two digits on an E-6010 electrode specify
Eccentric reducer (flat on top)
Height * .433 = psig
The type of coating and current
Guide - Anchor - Guide

15. What should be done first when preparing a copper joint?
.491lbs
Clean all surfaces
25' from any worker
zinc

16. To determine the set on a 45 degree offset you would multiply the travel by...
protect worker safety and health
Equalizing line
30 Degrees
.707

17. Although the model codes usually say the melting point of a brazing alloy must be at least 1000º F - the technical temperature specified by the Copper Development Association and the American Welding Society is __________ degrees Fahrenheit.
Fuel - Heat - Oxygen
Vaporization
840
All the way to the shoulder

18. How much does 1 cubic foot of air weigh?
The temperature that the joints are made - the flux and temperatures of the system
Dry expansion type
.075lbs
Magnesium

19. A triple-duty valve is installed...
In the hot water heating pumps discharge piping.
Height * .433 = psig
orthographic
tangent 1/2 angle x radius

20. There are __________ cubic inches in a gallon.
1
231
falls
Purge the line when brazing

21. What does a + plus sign mean?
8.33 pounds
Solder joints
Pipe penetration
Bight - running end and standing part

22. What is the expansion and compression of water vapor in a pump?
Cavitation
To allow for thermal movement
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.
Steam

23. Before attaching regulators to an oxygen cylinder...
blow the valves for a moment
Yellow.. think Dee Double U is yelloWWW
To provide movement cause from a change in temperature
Fusion

24. When should a person designated as an attendant attempt to rescue a worker that is trapped?
Depends on the desired action if the disc or plug becomes detatched from the stem. (Fail open or Fail closed)
The stud bolt is stronger than a machine bolt of the same size and material.
Never
All the way to the shoulder

25. The color code for type M copper is...
cool and lubricate the die
3 1/2'(inch)
Alloying
Red.. think M&M is RED

26. When lifting objects with sharp edges you should use a...
.01745 - 3.1416 - and .7854
Softener
Eccentric reducers - flat on top
Divide the diameter by half 4 times - put the 2nd and 4th number together to get the answer. Example - 6'(inch) 45 would be - 6 - 3 - 1 1/2 and 3/4. Answer 3 3/4'(inch)

27. When is it safe to remove the old packing from a valve that is under pressure?
Down Stream
1:48 - because 1/4 of an inch is 1/48th of a foot
NEVER!
62.4

28. The color code for DWV copper is...
8 5/8'(inch)
Yellow.. think Dee Double U is yelloWWW
5 9/16'(inch)
Manometer

29. One gallon of water weighs?
The system temperature - thermal and dynamic movement of the pipe and vibration.
8.33 pounds
The flux burns and the joint becomes ineffective
1/2 BTU

30. An increase in pressure will cause the boiling point of water to ________...
Increase
Flat position only
The same ID as the branch
Arrange a wire rope clamp so that the dead end has the U bolts

31. One atmosphere is equal to...
Its cheaper!
14.7psia - always in PSI-A
Purge the line when brazing
.135 cu ft

32. What causes pressure drop?
Increase in friction
.625
bowline on a bight
Raise the load

33. To properly align a flange you must perform what is commonly called a ______ hole...
The flux is in the filler material
Two Hole
falls
Multiply the length of the hypotenuse of the roll and the set by 1.414

34. What is the formula to figure take off on a 45 degree elbow?

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35. What does the G stand for in the 2G - 5G and 6G weld positions?
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.
Green... think KKelly GREEN
231
Groove

36. Standard atmospheric pressure at sea level is _____...
To protect the threads from rust.
Pressure rating
14.7 psia
The flux is in the filler material

37. Factors in considering the site selection for a new cooling tower.
15 Feet
Prevailing wind speed and direction - environmental concerns - zoning requirements
Two Hole
Arrange a wire rope clamp so that the dead end has the U bolts

38. What type of sensor is directly in the process stream?
Immersion sensor
2.31ft
None
.135 cu ft

39. For an extension ladder to be at the correct angle for safe use on a working surface 20ft high. The ladder must be located how many feet away from the base?
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.
To provide movement cause from a change in temperature
Material Safety Data Sheet
To protect the threads from rust.

40. Formula for area of a circle?
Multiply the specific weight by the weight of 1 cubic foot of water which is 62.4lbs. Specific weight x 62.4 = 1 cu ft weight. Example: Specific weight = 4.8 - 4.8 * 62.4 = 299lbs per cu ft
To chemically prepare the pieces for soldering
62.4 pounds
pi * radius squared

41. What size hole should be cut into a main to saddle ON a smaller pipe?
Ball joint - Bellows Joint and Packed Joint
Remove any paint or rust.
Vaporization
The same ID as the branch

42. When changing pipe sizes in the horizontal supply or return lines of a two-pipe hot water heating system use...
15 Feet
Material Safety Data Sheet
Eccentric reducers - flat on top
4 to 20 milliamps

43. A device that mechanically attaches to the side of a flange on a beam is called a...
Flash Tank
.433psi
Beam clamp
Vaporization

44. What does a condenser do?
14'(inch)
Type K
.01745 - 3.1416 - and .7854
On high side of the system and turns gas to liquid.

45. What instrument is best for measuring vacuum?
Globe valve
Manometer
34 feet
To protect the threads from rust.

46. Steam condensate lines should be installed on...
Roller hangers
supporter of combustion
Set point
Body belts

47. When should you ream the end of a pipe?
After cutting
25' from any worker
zinc
Ground Fault Circuit Interrupter

48. One pound of water pressure is equal to...
In the direction of flow
Depends on the desired action if the disc or plug becomes detatched from the stem. (Fail open or Fail closed)
2.31ft
soft tempered

49. A tag line should be used on a crane lift...
Guide - Anchor - Guide
200 lbs
4 times
ALWAYS

50. Which of the following is the decimal equivalent of 5/8'(inch)
.625
2 and 1
Dry expansion type
Flat position only