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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. The last two digits on an E-6010 electrode specify...
Strainer
the type of coating and current
A pry bar
Insure progressively tighter fit

2. A diamond on an instrumentation loop diagram encloses information concerning...
Flat and horizontal positions
Mechanical/Thermostatic
Set point
Snubber

3. Where should the high pressure condensate be piped to before entering the receiver?
Hydrostatics
Expansion loop.
250 degrees
Flash Tank

4. What causes pressure drop?
Too fast of a travel rate
212 degrees F
Increase in friction
Coating

5. The density of water is...
1
9
62.4
an eccentric reducer flat on top

6. Calculate head pressure in a section of vertical pipe?
Height * .433 = psig
1728
Green... think KKelly GREEN
Act as a safety device to shut off the motor if the operator's foot is removed from the switch.

7. A bushing is NOT a good replacement for a reducer because...
1:48 - because 1/4 of an inch is 1/48th of a foot
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)
In the hot water heating pumps discharge piping.
Its cheaper!

8. The function of a steam trap is to prevent the flow of ________________ - while allowing condensate and non-condensable gases to pass through.
The flux is in the filler material
Before the strainer and fully open.
36'(inch)
Steam

9. To properly align a flange you must perform what is commonly called a ______ hole...
Insufficient condensate drainage
maximum rated capacity
Neutral
Two Hole

10. What are 3 fuel gases used for heating pipe or tubing?
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.
2 and 1
MAPP - acetylene - and propane
.0361

11. OD for 3'(inch)

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12. A simple example of a lever is...
Ground Fault Circuit Interrupter
A pry bar
Air Bound
.7854 x D squared

13. To figure the end-to-end measurement of a piece of pipe when the end-to-end center measurement is known the...
Ground Fault Circuit Interrupter
take-off must be subtracted from the end-to-center measurement.
Too fast of a travel rate
piping

14. There are __________ gallons in a cubic foot.
Increase in friction
.075lbs
7.48
8 5/8'(inch)

15. What is the purpose of the oxygen and acetylene regulators?
To reduce the pressure from the cylinders to safe and workable pressures
.625
Flat position only
Arrange a wire rope clamp so that the dead end has the U bolts

16. 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?
Strainer
4 times
With the weld at a 45 degree angle
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.

17. One foot of water exerts...
When a large volume of condensate is generated
.433psi
14.7psia - always in PSI-A
1:48 - because 1/4 of an inch is 1/48th of a foot

18. Where is a bourdon tube found?
In a pressure gauge
Provide oxygen barrier - stabilize and direct the force of the arc and to gather impurities in the form of slag.
Alloying
Insufficient condensate drainage

19. In a typical residential air condittioning system - the evaporator is of the _______________ type - where the liquid refrigerant should be totally vaporized before it reaches the outlet of the evaporator.
Schedule 10
The flow of a liquid into a small space
dry expansion
Dog Everything

20. There are __________ cubic inches in a gallon.
231
1728
(Total Height - Elevation) * .433 = psig
orthographic

21. The specific gravity of a liquid can only be measured using the following instrument...
hydrometer
Point at the base and sweep the base with the extinguisher
DWV
cool and lubricate the die

22. OD for 8'(inch)

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23. When ordering ACR copper specify the size by...
protect worker safety and health
Ammonia
OD
Hydraulics

24. What size hole should be cut into a main to saddle ON a smaller pipe?
MAPP - acetylene - and propane
Fuse
The same ID as the branch
return fitting

25. What does the crane signal with the index finger pointed forward in a swirling motion signal?
Raise the load
Softener
The tensile strength of the rod in PSI times 1 -000
3 1/2'(inch)

26. Which of the following has the largest inside diameter?
Discharge
Schedule 10
NEVER!
1728

27. What has the largest effect on pump alignment?
Backflow preventer
With the weld at a 45 degree angle
Pipe strain
Fuel - Heat - Oxygen

28. One gallon of water occupies how many cubic feet?
14'(inch)
.135 cu ft
To chemically prepare the pieces for soldering
Material Safety Data Sheet

29. A thermostatic steam trap that fails in the closed position would cause a heating unit to become...
Spring hanger
Waterlogged
OD
4 to 20 milliamps

30. The type of drawing that views a building by looking directly at the front - top and side is referred to as a/an ___________ drawing.
take-off must be subtracted from the end-to-center measurement.
orthographic
.433psi
Clean all surfaces

31. In a typical residential air conditioning system - the evaporator is of the _______________ type - where the liquid refrigerant should be totally vaporized before it reaches the outlet of the evaporator.
25 feet
Dry expansion type
212 degrees F
Remove any paint or rust.

32. The pipe fitting that makes a 180 degree turn is called a/an?
None
Never
return fitting
Argon

33. Steam condensate lines should be installed on...
Roller hangers
DWV
Fuse
To reduce the pressure from the cylinders to safe and workable pressures

34. Which of the following is sometimes used as a shielding gas in the GTAW process?
212 degrees F
Argon
Down Stream
Raise the load

35. What is the purpose for a weep hole in a saddle pad?
Schedule 10
Pressuretrol
When a large volume of condensate is generated
Allow moisture to escape

36. The change in state from solid to liquid is known as...
Large volumes of condensate flash back to liquid in the tank so it removes trapped steam from the condensate.
Hazard prevention and control.
Depends on the desired action if the disc or plug becomes detatched from the stem. (Fail open or Fail closed)
Fusion

37. What do the first two digits mean in E7018 electrodes?
The tensile strength of the rod in PSI times 1 -000
6 5/8'(inch)
Spring hanger
NEVER!

38. Ladders with visible defects - such as broken rungs - cracked side rails - or broken steps must be...
Tagged and removed from service.
Insert pipe into fitting and turn 1/4 turn and hold
Notify response team and allow them to rescue.
protect worker safety and health

39. A gallon of water weighs...
To reduce the pressure from the cylinders to safe and workable pressures
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)
8.33lbs
14.7 psia

40. Momentarily closing the starting switch to check the rotation of the pump is known as __________ the pump.
Water
Bumping
25' from any worker
Body belts

41. What is the maximum pressure for an acetylene hose?
15 PSI
Air
Increase
Fusion

42. When a liquid changes immediately to a vapor it is called...
Flashing
foot valve
an eccentric reducer flat on top
radius squared times PI

43. 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.
Pressure rating
On high side of the system and turns gas to liquid.
1728
840

44. A sling is weakest in which position?
Mechanical/Thermostatic
Level the 90 in horizontal position determine inside arc - backside arc and face to center dimensions for 60 degree elbow - mark and cut
hydrometer
Choked position

45. What is the minimum thickness for threading PVC pipe?
Sch 40
Axis of pipe should be on a 45 degree
return fitting
the core

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

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47. The most that a crane should be loaded is...
All the way to the shoulder
Ground Fault Circuit Interrupter
Waterlogged
100% of the rated capacity

48. When a pipe size is decreased by half - the carrying capacity of the pipe decreases by...
Groove
NEVER!
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
Quarter

49. To determine the set on a 45 degree offset you would multiply the travel by...
14.7psia - always in PSI-A
Solder joints
protect worker safety and health
.707

50. Which of the following is NOT a reason to use stud bolts instead of machine bolts for bolting flanged piping joints?
The stud bolt is stronger than a machine bolt of the same size and material.
Vaporization
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)
Mechanical/Thermostatic

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Plumbing Certification

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