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. What is the minimum safe clearance between cranes and energized power lines operating at 50kV or below?
The science of heat transfer using water.
Material Safety Data Sheet
Hydrostatic
10 feet

2. What has the largest effect on pump alignment?
34 feet
200 lbs
Pipe strain
2.31ft

3. To determine the face to center measurement of a long radius 90 degree elbow - multiply the pipe size by...
handle will bend
1.5
Bight - running end and standing part
The flow of a liquid into a small space

4. OD for 2'(inch)

5. The pipe size of a pipe changes from the ID to the OD on what pipe size?

6. The amount of heat necessary bring about a change of state from solid to liquid or liquid to gas is known as _______________ heat.
Latent
Yellow.. think Dee Double U is yelloWWW
Strainer
radius squared times PI

7. When selecting a hanger for a piping system you should consider...
Fuse
The system temperature - thermal and dynamic movement of the pipe and vibration.
After cutting
Too fast of a travel rate

8. What is the expansion and compression of water vapor in a pump?
Cavitation
25' from any worker
14'(inch)
Waterlogged

9. The main cause of undercutting is...
Too fast of a travel rate
Fuse
Argon
Its cheaper!

10. When ordering ACR copper specify the size by...
OD
The Evaporator
Tagged and removed from service.
8.33 pounds

11. To determine the set on a 45 degree offset you would multiply the travel by...
Expansion = Constant per 100ft multiplied by (Final Temp- Starting Temp) Example: 380' steel pipe (.0305 constant) is heated from 62 degrees to 171 degrees - how much did the pipe expand? Formula: .0305 * 3.8 (171-62) = 3 5/16'(inch)
OD
30 Degrees
.707

12. With a high pressure valve you should never _____ under pressure.
return fitting
Continuously
Large end to smaller end to center(bull)
Remove the packing

13. Formula for a cubic foot of an unknown substances weight?
Flooded
Loosen the far bolts first
Steam
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

14. The function of a steam trap is to prevent the flow of ________________ - while allowing condensate and non-condensable gases to pass through.
Steam
Insufficient condensate drainage
Two Hole
75 degrees - also 4 to 1

15. Both soldered and brazed joints are made by heating a properly prepared joint to the proper temperature and the flowing of a filler metal by means of...
foot valve
Capillary action
1.5
In the direction of flow

16. What does the evaporator do?
36'(inch)
.625
Softens it
On low side of the system and expands liquid to low pressure gas.

17. A vertical line in an isometric drawing represents...
Up and Down
.01745 - 3.1416 - and .7854
In a pressure gauge
Solder joints

18. 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.
NEVER!
With the weld at a 45 degree angle
840
8.33 pounds

19. What is the standard pressure range for a pneumatic signal?
Point thumb up
Strainer
3 to 15 psi
The same ID as the branch

20. Where should the pressure enter a globe valve?
Remote bulb
Quarter
3.1416
Depends on the desired action if the disc or plug becomes detatched from the stem. (Fail open or Fail closed)

21. A cooling tower must have a ________ or be open-site.
maximum rated capacity
Backflow preventer
8 5/8'(inch)
Quarter

22. Formula for area of a circle?
Clean all surfaces
Forced convection - because the FAN forces convection!
pi * radius squared
Segmental

23. To view the west elevation the viewer's perspective is from the...
West of the building
2 and 1
62.4lbs
Expansion = Constant per 100ft multiplied by (Final Temp- Starting Temp) Example: 380' steel pipe (.0305 constant) is heated from 62 degrees to 171 degrees - how much did the pipe expand? Formula: .0305 * 3.8 (171-62) = 3 5/16'(inch)

24. The letters MSDS stand for...
Water
Loosen the far bolts first
Material Safety Data Sheet
With the weld at a 45 degree angle

25. Annealing copper...
3 to 15 psi
Softens it
Basket
The Evaporator

26. Steam condensate lines should use...
Ground Fault Circuit Interrupter
The science of heat transfer using water.
Sch 80 Steel pipe
Point at the base and sweep the base with the extinguisher

27. The color code for type '(inch)K'(inch) copper is?
Manometer
The flux burns and the joint becomes ineffective
Alloying
Green

28. What is the specific gravity of water?
Notify response team and allow them to rescue.
Valve
1
Axis of pipe should be on a 45 degree

29. The best knot to use when lifting pipe vertically is the...
Clove hitch with a half hitch
Ammonia
Vaporization
tangent 1/2 angle x radius

30. A Hartford loop is used for...
DWV
Axis of pipe should be on a 45 degree
200 lbs
Protection for loss of water in the boiler.

31. The density of water is...
62.4
Body belts
34 feet
To reduce the pressure from the cylinders to safe and workable pressures

32. Calculate head pressure in a section of vertical pipe?
Height * .433 = psig
true isometric
Prevailing wind speed and direction - environmental concerns - zoning requirements
Condensate pump size

33. The treatment of liquids at rest is known as...
Hydrostatics
62.4lbs
Backflow preventer
falls

34. A single line drawing of a piping system represents the...
steam and condensate flowing in the same direction
Center of the pipe
6 5/8'(inch)
Type K

35. What is the welding position 3 - on the electrode mean?
Flat position only
Pressure Rating
Insure progressively tighter fit
200 lbs

36. Steam condensate lines should be installed on...
.01745 - 3.1416 - and .7854
Roller hangers
250 degrees
30 Degrees

37. If the architectural scale is 1/4'(inch) equals 1 foot - the ratio would be...
1.5
Flash Tank
The same OD as the branch
1:48 - because 1/4 of an inch is 1/48th of a foot

38. The weight of 1 cubic foot of water is...
62.4lbs
To allow for thermal movement
Two Hole
Height * .433 = psig

39. The best method to ensure that a plastic joint is made properly - you should...
BCuP - Stands for Brazed Copper Phosphorus
Insert pipe into fitting and turn 1/4 turn and hold
take-off must be subtracted from the end-to-center measurement.
Spring hanger

40. OD for 8'(inch)

41. To raise the boom of a crane you would...
Immersion sensor
Softens it
6 5/8'(inch)
Point thumb up

42. A direct acting thermostat is used to...
Increase the pressure when the temperature increases
the employer
.625
4 1/2'(inch)

43. To assemble a 4 bolt flange...
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.
Anchors
Neutral
Clove hitch with a half hitch

44. When a cranes signaler's hand is pointed up with his finger moving in a circle it means to...
The stud bolt is stronger than a machine bolt of the same size and material.
To protect the threads from rust.
The flux burns and the joint becomes ineffective
Raise the load

45. What type of valve should be used to bypass a control valve?
Neutral
.707 x Travel
.707
Globe valve

46. Which of the following methods of access to a scaffold is prohibited?
Climbing the cross braces.
.707
1.5
Sensor

47. Which of the following is NOT a reason for using cutting oil when threading pipe?
To protect the threads from rust.
The temperature that the joints are made - the flux and temperatures of the system
the core
Loosen the far bolts first

48. What instrument is best for measuring vacuum?
Air Bound
Type K
MAPP - acetylene - and propane
Manometer

49. The sum of atmospheric and gauge pressure is known as __________ pressure.
Loosen the far bolts first
Absolute
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.
Yellow.. think Dee Double U is yelloWWW

50. Where is a bourdon tube found?
In a pressure gauge
Saturated
Crimson... think aCRimson
Schedule 10