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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. What type of flame should be used to cut carbon steel?
Neutral
Bight - running end and standing part
take-off must be subtracted from the end-to-center measurement.
foot valve

2. What type of expansion joint does NOT utilize mechanical movement?
14.7psia - always in PSI-A
Guide - Anchor - Guide
Its cheaper!
Expansion loop.

3. OD for 4'(inch)

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4. OD for 6'(inch)

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5. Which of the elements of a wire rope aid in absorbing '(inch)Shock Loads'(inch)?
handle will bend
the core
maximum rated capacity
Multiply the length of the hypotenuse of the roll and the set by 1.414

6. The last digit on a welding electrode refers to the __________ of the electrode.
Coating
Up and Down
Clove hitch with a half hitch
Beam clamp

7. To determine the travel for a 45 degree rolling offset you would...
4 to 20 milliamps
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)
Multiply the length of the hypotenuse of the roll and the set by 1.414
On low side of the system and expands liquid to low pressure gas.

8. What causes water to move in a Hydronic system?
The pump creates a differential in pressure that moves the water.
1 5/16'(inch)
Alloying
In the hot water heating pumps discharge piping.

9. What is the purpose of the expansion joint in a steam system?
To chemically prepare the pieces for soldering
.491lbs
To provide movement cause from a change in temperature
15 Feet

10. OD for 2'(inch)

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11. The color code for type L copper is...
840
Blue... think b-LLLLue
Steam
Protection for loss of water in the boiler.

12. If the architectural scale is 1/4'(inch) equals 1 foot - the ratio would be...
13/16'(inch)
.625
1:48 - because 1/4 of an inch is 1/48th of a foot
Basket

13. A cooling tower must have a ________ or be open-site.
Flash Tank
Conduction - convection and radiant.
Backflow preventer
To allow for thermal movement

14. When a liquid changes immediately to a vapor it is called...
1728
Flash Tank
Flashing
Water

15. A device that mechanically attaches to the side of a flange on a beam is called a...
Beam clamp
The stud bolt is stronger than a machine bolt of the same size and material.
Magnesium
Tagged and removed from service.

16. How many 2'(inch) pipes can be supplied from a 6'(inch) header?
handle will bend
The flux is in the filler material
13/16'(inch)
9

17. What is the formula to calculate thermal expansion?

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18. The best knot to use when lifting pipe vertically is the...
Increase
All the way to the shoulder
The pump creates a differential in pressure that moves the water.
Clove hitch with a half hitch

19. What is the welding position 3 - on the electrode mean?
231
Flat position only
Green
Level the 90 in horizontal position determine inside arc - backside arc and face to center dimensions for 60 degree elbow - mark and cut

20. When should you ream the end of a pipe?
After cutting
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
200 lbs
Hydrostatics

21. The change in state from solid to liquid is known as...
2 and 1
Fusion
4 times
Pressuretrol

22. A Hartford loop is used for...
Alloying
Loosen the far bolts first
1
Protection for loss of water in the boiler.

23. What does the term '(inch)never saddle a dead horse'(inch) mean?
Point at the base and sweep the base with the extinguisher
Multiply the length of the hypotenuse of the roll and the set by 1.414
.625
Arrange a wire rope clamp so that the dead end has the U bolts

24. What do the first two digits mean in E7018 electrodes?
Equalizing line
Hydrostatic
The tensile strength of the rod in PSI times 1 -000
Choked position

25. The color code for type K copper is...
Fuse
Green... think KKelly GREEN
return fitting
compression

26. When changing pipe sizes in the horizontal supply or return lines of a two-pipe hot water heating system use...
Eccentric reducers - flat on top
Dry expansion type
NEVER!
30 Degrees

27. What would be the result of an incorrectly installed orifice plate?
Erratic readings
Depends on the desired action if the disc or plug becomes detatched from the stem. (Fail open or Fail closed)
Hazard prevention and control.
Tagged and removed from service.

28. The pipe fitting that makes a 180 degree turn is called a/an?
Raise the load
Strainer
return fitting
After cutting

29. A sling is weakest in which position?
steel to copper joints
1.5
Choked position
the employer

30. When arranging weld coupons for testing position 6G...
Axis of pipe should be on a 45 degree
Insure progressively tighter fit
Notify response team and allow them to rescue.
Sensor

31. The amount of heat it takes to raise one pound of water one degree Fahrenheit is known as a...
Point at the base and sweep the base with the extinguisher
1.5
Dry expansion type
BUT

32. What does GFCI stand for?
Ground Fault Circuit Interrupter
14.7psia - always in PSI-A
Raise the load
Globe valve

33. Which of the following is an essential element necessary to produce an ordinary fire?
Fuse
To chemically prepare the pieces for soldering
take-off must be subtracted from the end-to-center measurement.
Fuel - Heat - Oxygen

34. Which of the following is NOT a reason to use stud bolts instead of machine bolts for bolting flanged piping joints?
Ammonia
The stud bolt is stronger than a machine bolt of the same size and material.
.491lbs
maximum rated capacity

35. The pressure exerted by a liquid at rest is...
Eccentric reducers - flat on top
.7854 x D squared
Hydrostatic
Protection for loss of water in the boiler.

36. Where should the high pressure condensate be piped to before entering the receiver?
Purge the line when brazing
Globe
Flash Tank
Pneumatics

37. When using a cable come-a-long - what safety device will indicate overloading?
75 degrees - also 4 to 1
handle will bend
Hazard prevention and control.
Insufficient condensate drainage

38. The device that controls the pressure in a low pressure steam boiler is called a...
Mechanical/Thermostatic
All the way to the shoulder
Groove
Pressuretrol

39. Which of the following types of copper tube has the smallest wall thickness?
true isometric
1.25'(inch)
DWV
Thermostatic - Thermodynamic and Mechanical

40. One foot of water exerts...
8.33 pounds
The flux burns and the joint becomes ineffective
.433psi
Backflow preventer

41. Steam supply using parallel flow is...
steam and condensate flowing in the same direction
Basket
The stud bolt is stronger than a machine bolt of the same size and material.
Pipe penetration

42. 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.
bowline on a bight
The science of heat transfer using water.
840
Sch 40

43. A vertical line in an isometric drawing represents...
6 5/8'(inch)
Up and Down
14.7psia - always in PSI-A
Beam clamp

44. Calculate head pressure of a vertical pipe at specific elevations.
tangent 1/2 angle x radius
dry expansion
Condensate pump size
(Total Height - Elevation) * .433 = psig

45. What does the G stand for in the 2G - 5G and 6G weld positions?
Groove
14.7 psia
5 9/16'(inch)
Pressure Rating

46. To fabricate a 60 degree elbow from a 90 you would...
62.4lbs
Pipe strain
Bight - running end and standing part
Level the 90 in horizontal position determine inside arc - backside arc and face to center dimensions for 60 degree elbow - mark and cut

47. The function of a steam trap is to prevent the flow of ________________ - while allowing condensate and non-condensable gases to pass through.
Large volumes of condensate flash back to liquid in the tank so it removes trapped steam from the condensate.
lower hook
The flow of a liquid into a small space
Steam

48. What are the three rope parts used in tying knots and hitches?
Beam clamp
In the hot water heating pumps discharge piping.
Bight - running end and standing part
1 5/16'(inch)

49. Which is the correct formula for the area of a circle?
The Evaporator
Fuel - Heat - Oxygen
Snubber
.7854 x D squared

50. What effect does the fill pressure (static) have on a closed loop plumbing system?
None
Dog Everything
7.0
Quarter

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Plumbing Certification

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