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Plumbing Certification

Instructions:

Answer 50 questions in 15 minutes.
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Match each statement with the correct term.
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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. Which way should the bevel face on an orifice plate?
Down Stream
Segmental
Discharge
Dry expansion type

2. The proper way to extinguish a fire is to...
14'(inch)
Too fast of a travel rate
Point at the base and sweep the base with the extinguisher
Flash Tank

3. How often should the atmosphere be tested in a confined space?
Continuously
In a pressure gauge
Notify response team and allow them to rescue.
steel to copper joints

4. Which component in a closed control loop is the primary element?
Sensor
Yellow.. think Dee Double U is yelloWWW
Ammonia
Large volumes of condensate flash back to liquid in the tank so it removes trapped steam from the condensate.

5. Which is the correct formula for the area of a circle?
34 feet
15 Feet
.7854 x D squared
Manometer

6. What type of expansion joint does NOT utilize mechanical movement?
.625
Air
Expansion loop.
36'(inch)

7. Where should the high pressure condensate be piped to before entering the receiver?
Quarter
All the way to the shoulder
Flash Tank
The type of coating and current

8. What is the minimum safe clearance between cranes and energized power lines operating at 50kV or below?
10 feet
ALWAYS
the employer
Clean all surfaces

9. To raise the boom of a crane you would...
The flux is in the filler material
2 3/8'(inch)
Point thumb up
.0361

10. When selecting a hanger for a piping system you should consider...
the core
1 foot
The same ID as the branch
The system temperature - thermal and dynamic movement of the pipe and vibration.

11. Which of the following types of copper tube has the smallest wall thickness?
Pneumatics
.0361
A pry bar
DWV

12. Standard atmospheric pressure at sea level is _____...
bowline on a bight
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)
The pump creates a differential in pressure that moves the water.
14.7 psia

13. OD for 5'(inch)

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14. A simple example of a lever is...
Pipe penetration
Height * .433 = psig
MAPP - acetylene - and propane
A pry bar

15. In a Hydronic heating system - units at the top of the system not heating are likely to be...
Clean all surfaces
Air Bound
Alloying
Two Hole

16. The change in state from a liquid to gas is known as...
1728
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)
Vaporization
1/2 BTU

17. OD for 6'(inch)

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18. Calculate head pressure in a section of vertical pipe?
Notify response team and allow them to rescue.
Height * .433 = psig
Flat and horizontal positions
The science of heat transfer using water.

19. If the travel of a 45 degree offset is known - what formula can be used to find the advance?
All position
Its cheaper!
4 times
.707 x Travel

20. A device that mechanically attaches to the side of a flange on a beam is called a...
Beam clamp
.0361
After cutting
7.48

21. Which one of the following measures and takes action?
Hazard prevention and control.
Cavitation
Controller
supporter of combustion

22. What is the specific gravity of water?
Insure progressively tighter fit
Equalizing line
Center of the pipe
1

23. What instrument is best for measuring vacuum?
212 degrees F
Flux
Manometer
2 3/8'(inch)

24. When should a person designated as an attendant attempt to rescue a worker that is trapped?
34 feet
Forced convection - because the FAN forces convection!
Never
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.

25. The last two digits on an E-6010 electrode specify
Arrange a wire rope clamp so that the dead end has the U bolts
Anchors
The type of coating and current
4 1/2'(inch)

26. Where is a bourdon tube found?
30 Degrees
Beam clamp
In a pressure gauge
7.48

27. What is Hydronics?
The type of coating and current
Fuse
After cutting
The science of heat transfer using water.

28. What is on the low side of the vapor compression cycle?
Fuse
Latent
The Evaporator
Insure progressively tighter fit

29. Calculate head pressure of a vertical pipe at specific elevations.
(Total Height - Elevation) * .433 = psig
In a pressure gauge
Remove the packing
Sch 80 Steel pipe

30. The weight of 1 cubic foot of water is...
Increase in friction
Air Bound
62.4lbs
Snubber

31. The density of water is...
4 to 20 milliamps
The stud bolt is stronger than a machine bolt of the same size and material.
62.4
Softens it

32. In a piping installation allowing for expansion in two directions - how should the anchor(s) and guide(s) be positioned relative to each other?
To reduce the pressure from the cylinders to safe and workable pressures
Guide - Anchor - Guide
Yellow.. think Dee Double U is yelloWWW
On high side of the system and turns gas to liquid.

33. Which of the following is NOT a reason for using cutting oil when threading pipe?
soft tempered
1 5/16'(inch)
set point
To protect the threads from rust.

34. Use of air as a power source is known as...
Alloying
3 1/2'(inch)
Pneumatics
13/16'(inch)

35. Where should the pressure enter a globe valve?
.433psi
9
Valve
Depends on the desired action if the disc or plug becomes detatched from the stem. (Fail open or Fail closed)

36. The color code for type L copper is...
Discharge
The tubing has been cleaned for oxygen service
Blue... think b-LLLLue
Flashing

37. A vertical line in an isometric drawing represents...
Up and Down
1:48 - because 1/4 of an inch is 1/48th of a foot
Hydraulics
On low side of the system and expands liquid to low pressure gas.

38. The best method to ensure that a plastic joint is made properly - you should...
radius squared times PI
Insert pipe into fitting and turn 1/4 turn and hold
.707
Ball joint - Bellows Joint and Packed Joint

39. Formula for a cubic foot of an unknown substances weight?
Groove
Fusion
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
Raise the load

40. The 6G welding position is...
Flat position only
With the weld at a 45 degree angle
Red.. think M&M is RED
15 PSI

41. Since _______________ is virtually incompressible - pressure has little effect on its volume.
62.4lbs
Notify response team and allow them to rescue.
tangent 1/2 angle x radius
Water

42. A cooling tower must have a ________ or be open-site.
100% of the rated capacity
.075lbs
Backflow preventer
orthographic

43. The specific gravity of a gas is relative to the specific weight of _______________ - which has a specific gravity of one.
Conduction - convection and radiant.
14.7psia - always in PSI-A
Spiral Wound
Air

44. A condensate receiver is used when...
In a pressure gauge
The tensile strength of the rod in PSI times 1 -000
75 degrees - also 4 to 1
When a large volume of condensate is generated

45. One pound of water pressure is equal to...
2.31ft
Saturated
Increase the pressure when the temperature increases
Eccentric reducer (flat on top)

46. To view the west elevation the viewer's perspective is from the...
Primer
Fusion
West of the building
.7854 x D squared

47. What is capillary action?
Schedule 10
tangent 1/2 angle x radius
blow the valves for a moment
The flow of a liquid into a small space

48. When ordering ACR copper specify the size by...
MAPP - acetylene - and propane
OD
None
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)

49. OD for 8'(inch)

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50. The ______ is used to protect the weld puddle from contamination in the SMAW process.
Insert pipe into fitting and turn 1/4 turn and hold
4 times
Flux
Arrange a wire rope clamp so that the dead end has the U bolts

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Plumbing Certification

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