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Plumbing Certification

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Answer 50 questions in 15 minutes.
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Match each statement with the correct term.
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1. The function of a steam trap is to prevent the flow of ________________ - while allowing condensate and non-condensable gases to pass through.
ALWAYS
.707
5 9/16'(inch)
Steam

2. To assemble a 4 bolt flange...
Large volumes of condensate flash back to liquid in the tank so it removes trapped steam from the condensate.
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.
Neutral
Groove

3. Which rigging configuration has the greatest sling strength?
Basket
cool and lubricate the die
231
Conduction - convection and radiant.

4. To determine the travel for a 45 degree rolling offset you would...
Condensate pump size
Alloying
NEVER!
Multiply the length of the hypotenuse of the roll and the set by 1.414

5. One atmosphere is equal to...
The stud bolt is stronger than a machine bolt of the same size and material.
14.7psia - always in PSI-A
near the middle of the jaws
Groove

6. What is the best valve for throttling?
14.7psia - always in PSI-A
62.4
Globe
Eccentric reducer (flat on top)

7. On a centrifugal pump what is rotated by the motor?
In a pressure gauge
The impeller
Depends on the desired action if the disc or plug becomes detatched from the stem. (Fail open or Fail closed)
pi * radius squared

8. A vertical line in an isometric drawing represents...
Insufficient condensate drainage
Water
Controller
Up and Down

9. OD for 2'(inch)

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10. To raise the boom of a crane you would...
Point thumb up
Crimson... think aCRimson
The impeller
4 1/2'(inch)

11. What does a + plus sign mean?
Ammonia
Pipe penetration
Continuously
take-off must be subtracted from the end-to-center measurement.

12. Which of the following is sometimes used as a shielding gas in the GTAW process?
To reduce the pressure from the cylinders to safe and workable pressures
Argon
Expansion loop.
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)

13. What type of Copper tubing is not identified by color on the tubing itself?
soft tempered
Discharge
3 to 15 psi
Fusion

14. When arranging weld coupons for testing position 6G...
Groove
Equalizing line
take-off must be subtracted from the end-to-center measurement.
Axis of pipe should be on a 45 degree

15. A device that mechanically attaches to the side of a flange on a beam is called a...
6 5/8'(inch)
Globe valve
1.25'(inch)
Beam clamp

16. What size hole should be cut into a main to saddle IN a smaller pipe?
The temperature that the joints are made - the flux and temperatures of the system
Material Safety Data Sheet
2 and 1
The same OD as the branch

17. One gallon of water weighs?
1
8.33 pounds
Down Stream
25 feet

18. A triple-duty valve is installed...
Quarter
In the hot water heating pumps discharge piping.
Dog Everything
Protection for loss of water in the boiler.

19. Which of the following methods of access to a scaffold is prohibited?
Sch 80 Steel pipe
Crimson... think aCRimson
Climbing the cross braces.
Increase the pressure when the temperature increases

20. What causes pressure drop?
Depends on the desired action if the disc or plug becomes detatched from the stem. (Fail open or Fail closed)
Two Hole
Absolute
Increase in friction

21. A vent is not needed on a condensate receiver when...
Ammonia
34 feet
Mechanical return is used.
Equalizing line

22. What are the main differences between soldering and brazing?
2 and 1
The temperature that the joints are made - the flux and temperatures of the system
2.31ft
.0361

23. What is installed after the isolation valve and before the trap union on a standard trap assembly?
Insufficient condensate drainage
Hydrostatics
Axis of pipe should be on a 45 degree
Strainer

24. A condensate receiver is used when...
All the way to the shoulder
5 9/16'(inch)
When a large volume of condensate is generated
6 5/8'(inch)

25. OD for 4'(inch)

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26. Ladders with visible defects - such as broken rungs - cracked side rails - or broken steps must be...
Tagged and removed from service.
.01745 - 3.1416 - and .7854
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)
Equalizing line

27. What is the standard for an electronic signal?
Raise the load
Climbing the cross braces.
4 to 20 milliamps
Groove

28. If you double pipe size the carrying capacity is increased...
Steam
4 times
.01745 - 3.1416 - and .7854
The Evaporator

29. Why is it necessary to use flux on a soldered joint?
Absolute
To chemically prepare the pieces for soldering
Pressure Rating
ALWAYS

30. A _______________ reamer should NOT be used with power operated pipe threading equipment
Spiral
8.33 pounds
near the middle of the jaws
Dog Everything

31. Which of the following is an essential element necessary to produce an ordinary fire?
galvanized
Fuel - Heat - Oxygen
The flow of a liquid into a small space
4 times

32. The face to center measurement of any welded angle fitting equals...
The flux is in the filler material
(Total Height - Elevation) * .433 = psig
15 Feet
tangent 1/2 angle x radius

33. What is the welding position 1 - on the electrode mean?
All position
Arrange a wire rope clamp so that the dead end has the U bolts
8.33lbs
Tagged and removed from service.

34. A rating of 300# refers to a flange's...
2 3/8'(inch)
dry expansion
Pressure Rating
Hydrostatics

35. What occurs in a flash tank?
Flooded
Large volumes of condensate flash back to liquid in the tank so it removes trapped steam from the condensate.
Bumping
Strainer

36. Which of the following is the decimal equivalent of 5/8'(inch)
5 9/16'(inch)
tangent 1/2 angle x radius
.625
4 times

37. If a pump is operating under static suction lift conditions - a __________ may be installed in the suction line to avoid losing the pump's prime each time the pump shuts off.
Backflow preventer
West of the building
foot valve
None

38. What does the term '(inch)never saddle a dead horse'(inch) mean?
Flash Tank
Arrange a wire rope clamp so that the dead end has the U bolts
The same OD as the branch
Discharge

39. What causes water hammer?
Insufficient condensate drainage
8 5/8'(inch)
In the hot water heating pumps discharge piping.
250 degrees

40. What is the specific gravity of water?
Globe
1
discharge
When a large volume of condensate is generated

41. When leaning a ladder against an object - the ladder should be at an approximate angle of __________ degrees.
The science of heat transfer using water.
36'(inch)
BUT
75 degrees - also 4 to 1

42. What is used to soften PVC and remove the gloss?
an eccentric reducer flat on top
Flash Tank
Solder joints
Primer

43. How much does 1 cubic foot of air weigh?
Air
Segmental
.075lbs
The science of heat transfer using water.

44. What is the welding position 2 - on the electrode mean?
the employer
Flat and horizontal positions
Allow moisture to escape
.7854 x D squared

45. A tag line should be used on a crane lift...
1 5/16'(inch)
The type of coating and current
ALWAYS
15 PSI

46. A gallon of water weighs...
.0361
The pump creates a differential in pressure that moves the water.
8.33lbs
Equalizing line

47. One cubic foot of water weighs?
Pipe strain
Spiral Wound
Forced convection - because the FAN forces convection!
62.4 pounds

48. The centerline of piping in a horizontal plane on an isometric drawing is most generally drawn at __________ degrees from the horizontal.
30 Degrees
Roller hangers
8.33 pounds
Remove the packing

49. The density of 1 cubic inch of Mercury is...
.491lbs
pi * radius squared
1:48 - because 1/4 of an inch is 1/48th of a foot
Fuse

50. What is the formula to figure the area of a circle?
.707 x Travel
34 feet
2nd gear divided by primary gear. Example: A machine has a primary pulley of 6'(inch) and a secondary pulley of 24'(inch). Formula is 24/6=4 - so the ratio is 4 to 1
radius squared times PI

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Plumbing Certification

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