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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. To figure the end-to-end measurement of a piece of pipe when the end-to-end center measurement is known the...
Prevailing wind speed and direction - environmental concerns - zoning requirements
take-off must be subtracted from the end-to-center measurement.
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.
Quarter

2. What is the welding position 2 - on the electrode mean?
Dog Everything
Before the strainer and fully open.
Tagged and removed from service.
Flat and horizontal positions

3. A rating of 300# refers to a flange's...
14.7psia - always in PSI-A
Pressure Rating
Saturated
Softener

4. What effect does the fill pressure (static) have on a closed loop plumbing system?
7.48
The system temperature - thermal and dynamic movement of the pipe and vibration.
2 3/8'(inch)
None

5. What is the expansion and compression of water vapor in a pump?
Equalizing line
The flux is in the filler material
Continuously
Cavitation

6. There are __________ cubic inches in a gallon.
231
Never
Large end to smaller end to center(bull)
180

7. The color code for type '(inch)K'(inch) copper is?
Expansion loop.
Green
4 to 20 milliamps
Ammonia

8. Why can flux be omitted in a brazed joint?
.01745 - 3.1416 - and .7854
14.7 psia
The flux is in the filler material
231

9. What does the evaporator do?
On low side of the system and expands liquid to low pressure gas.
62.4 pounds
Ball joint - Bellows Joint and Packed Joint
maximum rated capacity

10. 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...
Capillary action
All position
The tensile strength of the rod in PSI times 1 -000
Ball joint - Bellows Joint and Packed Joint

11. Steam condensate lines should be installed on...
Roller hangers
Before the strainer and fully open.
The pump creates a differential in pressure that moves the water.
Hydraulics

12. An ejector pump is typically used to pump __________.
sewage
14'(inch)
set point
Valve

13. A single line drawing of a piping system represents the...
the employer
Height * .433 = psig
true isometric
Center of the pipe

14. What should the outside attendant do to rescue a worker who shows physiological effects of exposure in a confined space?
.0361
Pressure rating
Notify response team and allow them to rescue.
Backflow preventer

15. When gripping a pipe with a pipe wrench - the wrench should be adjusted so the pipe is...
near the middle of the jaws
Large end to smaller end to center(bull)
Never
180

16. One gallon of water weighs?
180
(Total Height - Elevation) * .433 = psig
piping
8.33 pounds

17. The density of water is...
62.4
Spiral Wound
Crimson... think aCRimson
Blue... think b-LLLLue

18. When ordering ACR copper specify the size by...
OD
Raise the load
All the way to the shoulder
Vaporization

19. What size hole should be cut into a main to saddle ON a smaller pipe?
25 feet
The type of coating and current
Purge the line when brazing
The same ID as the branch

20. The specific weight of mercury is...
Its cheaper!
Segmental
.0361
radius squared times PI

21. Formula for a cubic foot of an unknown substances weight?
2 3/8'(inch)
After cutting
Blue... think b-LLLLue
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

22. When selecting a hanger for a piping system you should consider...
The system temperature - thermal and dynamic movement of the pipe and vibration.
.01745 - 3.1416 - and .7854
Spiral Wound
To reduce the pressure from the cylinders to safe and workable pressures

23. A schematic drawing is...
Not to scale - does not show locations of equipment. It shows pipe size and flow.
Snubber
Immersion sensor
840

24. What is the purpose of the expansion joint in a steam system?
Coating
1:48 - because 1/4 of an inch is 1/48th of a foot
The type of coating and current
To provide movement cause from a change in temperature

25. A rating of 150# refers to a flange's...
Schedule 10
Type K
The tubing has been cleaned for oxygen service
Pressure rating

26. 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.
OD
Body belts
Clove hitch with a half hitch
foot valve

27. The color code for type K copper is...
Green... think KKelly GREEN
After cutting
Softener
cool and lubricate the die

28. When is it safe to remove the old packing from a valve that is under pressure?
In a pressure gauge
Steam
NEVER!
2.31ft

29. The treatment of liquids at rest is known as...
Above the main
Sch 80 Steel pipe
Provide oxygen barrier - stabilize and direct the force of the arc and to gather impurities in the form of slag.
Hydrostatics

30. A bushing is NOT a good replacement for a reducer because...
Its cheaper!
Remove the packing
Clean all surfaces
15 Feet

31. What are the main differences between soldering and brazing?
dry expansion
The temperature that the joints are made - the flux and temperatures of the system
an eccentric reducer flat on top
Expansion Device

32. Which of the following has the largest inside diameter?
Segmental
Schedule 10
Flux
The same ID as the branch

33. An increase in pressure will cause the boiling point of water to ________...
Controller
blow the valves for a moment
250 degrees
Increase

34. Which one of the following alloys does not require flux when brazing copper to copper joints?
no valves permitted
pi * radius squared
BCuP - Stands for Brazed Copper Phosphorus
Forced convection - because the FAN forces convection!

35. Which of the following types of clamps are used to dampen a pipe's movement?
Flash Tank
Sch 40
The flow of a liquid into a small space
Snubber

36. How high must you extend a ladder above the roof or deck?

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37. Which of the following constants are used when working with circles and areas?
.01745 - 3.1416 - and .7854
.135 cu ft
Clove hitch with a half hitch
To provide movement cause from a change in temperature

38. To determine the set on a 45 degree offset you would multiply the travel by...
Depends on the desired action if the disc or plug becomes detatched from the stem. (Fail open or Fail closed)
2 3/8'(inch)
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
.707

39. The 6G welding position is...
With the weld at a 45 degree angle
Vaporization
discharge
180

40. Name the three methods of transferring heat.
.7854 x D squared
Remove any paint or rust.
Solder joints
Conduction - convection and radiant.

41. A dielectric fitting should be used on...
steel to copper joints
Ground Fault Circuit Interrupter
Bumping
Ball joint - Bellows Joint and Packed Joint

42. What should be done first when preparing a copper joint?
Clean all surfaces
A pry bar
2.31ft
Remove the packing

43. A gallon of water weighs...
Clove hitch with a half hitch
8.33lbs
1 foot
The flux is in the filler material

44. The centerline of piping in a horizontal plane on an isometric drawing is most generally drawn at __________ degrees from the horizontal.
Softener
30 Degrees
Groove
Discharge

45. To view the west elevation the viewer's perspective is from the...
West of the building
1728
Notify response team and allow them to rescue.
After cutting

46. If the architectural scale is 1/4'(inch) equals 1 foot - the ratio would be...
1:48 - because 1/4 of an inch is 1/48th of a foot
1.5
Clean all surfaces
no valves permitted

47. What does a condenser do?
.7854 x D squared
tangent 1/2 angle x radius
On high side of the system and turns gas to liquid.
To chemically prepare the pieces for soldering

48. Which of the following is NOT a reason for using cutting oil when threading pipe?
no valves permitted
Flat position only
To protect the threads from rust.
All the way to the shoulder

49. OD for 6'(inch)

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50. What type of copper tubing joint requires use of a ferrule?
Latent
compression
Neutral
Globe