Test your basic knowledge |

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. When arranging weld coupons for testing position 6G...
Sch 80 Steel pipe
Axis of pipe should be on a 45 degree
Magnesium
Anchors

2. Ladders with visible defects - such as broken rungs - cracked side rails - or broken steps must be...
MAPP - acetylene - and propane
Mechanical return is used.
Water
Tagged and removed from service.

3. What is Hydronics?
2 and 1
The science of heat transfer using water.
15 PSI
1.25'(inch)

4. When using a cable come-a-long - what safety device will indicate overloading?
handle will bend
(Total Height - Elevation) * .433 = psig
Insufficient condensate drainage
supporter of combustion

5. To determine the travel for a 45 degree rolling offset you would...
Beam clamp
Multiply the length of the hypotenuse of the roll and the set by 1.414
Bumping
Mechanical/Thermostatic

6. OD for 5'(inch)

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7. An abrasive wheel should never run faster than it...
Allow moisture to escape
set point
Pneumatics
maximum rated capacity

8. Formula for area of a circle?
The science of heat transfer using water.
Level the 90 in horizontal position determine inside arc - backside arc and face to center dimensions for 60 degree elbow - mark and cut
Fuel - Heat - Oxygen
pi * radius squared

9. The color code for DWV copper is...
Green
1.5
All the way to the shoulder
Yellow.. think Dee Double U is yelloWWW

10. What type of valve should be used to bypass a control valve?
34 feet
Increase
Yellow.. think Dee Double U is yelloWWW
Globe valve

11. A condensate receiver is used when...
Coating
When a large volume of condensate is generated
Material Safety Data Sheet
Set point

12. Where should the pressure enter a globe valve?
Depends on the desired action if the disc or plug becomes detatched from the stem. (Fail open or Fail closed)
Roller hangers
Increase in friction
Air Bound

13. What type of expansion joint does NOT utilize mechanical movement?
discharge
Expansion loop.
5 9/16'(inch)
true isometric

14. Steam condensate lines should use...
Saturated
Expansion loop.
Sch 80 Steel pipe
sewage

15. A __________ displacement pump discharges a definite quantity of liquid for each cycle.
no valves permitted
Sch 80 Steel pipe
Positive
Anchors

16. When selecting a hanger for a piping system you should consider...
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)
compression
The system temperature - thermal and dynamic movement of the pipe and vibration.
return fitting

17. Why is it necessary to use flux on a soldered joint?
Valve
To chemically prepare the pieces for soldering
Hydrostatics
In the hot water heating pumps discharge piping.

18. What is the main reason for the taper on a pipe thread?
Flooded
Clove hitch with a half hitch
200 lbs
Insure progressively tighter fit

19. What is the standard for an electronic signal?
Remove any paint or rust.
Sch 80 Steel pipe
Protection for loss of water in the boiler.
4 to 20 milliamps

20. The function of a steam trap is to prevent the flow of ________________ - while allowing condensate and non-condensable gases to pass through.
Steam
The stud bolt is stronger than a machine bolt of the same size and material.
Body belts
Blue... think b-LLLLue

21. Factors in considering the site selection for a new cooling tower.
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.
Prevailing wind speed and direction - environmental concerns - zoning requirements
Crimson... think aCRimson
Act as a safety device to shut off the motor if the operator's foot is removed from the switch.

22. The change in state from solid to liquid is known as...
DWV
Fusion
The tensile strength of the rod in PSI times 1 -000
Solder joints

23. The last two digits on an E-6010 electrode specify
Up and Down
set point
The type of coating and current
To provide movement cause from a change in temperature

24. The pressure exerted by a liquid at rest is...
14.7psia - always in PSI-A
1
Hydrostatic
maximum rated capacity

25. The best method to ensure that a plastic joint is made properly - you should...
13/16'(inch)
Insert pipe into fitting and turn 1/4 turn and hold
orthographic
falls

26. The letters MSDS stand for...
.625
Clean all surfaces
Purge the line when brazing
Material Safety Data Sheet

27. What does the term '(inch)never saddle a dead horse'(inch) mean?
Pressure rating
Arrange a wire rope clamp so that the dead end has the U bolts
Vaporization
840

28. What does the crane signal with the index finger pointed forward in a swirling motion signal?
Raise the load
(Total Height - Elevation) * .433 = psig
75 degrees - also 4 to 1
Cavitation

29. Which of the following types of clamps are used to dampen a pipe's movement?
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)
Snubber
Depends on the desired action if the disc or plug becomes detatched from the stem. (Fail open or Fail closed)
None

30. What does the stamp Oxy-Med stand for on copper tubing?
Argon
Thermostatic - Thermodynamic and Mechanical
Depends on the desired action if the disc or plug becomes detatched from the stem. (Fail open or Fail closed)
The tubing has been cleaned for oxygen service

31. How much does 1 cubic foot of air weigh?
DWV
no valves permitted
.075lbs
protect worker safety and health

32. OD for 1'(inch)

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33. What is the best valve for throttling?
protect worker safety and health
Globe
Fuel - Heat - Oxygen
Erratic readings

34. What should the outside attendant do to rescue a worker who shows physiological effects of exposure in a confined space?
Notify response team and allow them to rescue.
supporter of combustion
The same ID as the branch
Eccentric reducers - flat on top

35. Which one of the following measures and takes action?
Controller
sewage
Forced convection - because the FAN forces convection!
To chemically prepare the pieces for soldering

36. Horizontal steam supply piping should be reduced in size by using...
34 feet
Backflow preventer
protect worker safety and health
Eccentric reducer (flat on top)

37. What are the three rope parts used in tying knots and hitches?
Point thumb up
The flux is in the filler material
Bight - running end and standing part
The tubing has been cleaned for oxygen service

38. What is the purpose for a weep hole in a saddle pad?
Allow moisture to escape
4 to 20 milliamps
The Evaporator
protect worker safety and health

39. The most that a crane should be loaded is...
Multiply the length of the hypotenuse of the roll and the set by 1.414
When a large volume of condensate is generated
100% of the rated capacity
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

40. Before attaching regulators to an oxygen cylinder...
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)
After cutting
blow the valves for a moment
Flat and horizontal positions

41. What type of sensor is directly in the process stream?
Increase in friction
Positive
The flux burns and the joint becomes ineffective
Immersion sensor

42. The weight of 1 cubic foot of water is...
set point
Fuel - Heat - Oxygen
bowline on a bight
62.4lbs

43. Why can flux be omitted in a brazed joint?
Green... think KKelly GREEN
The flux is in the filler material
The system temperature - thermal and dynamic movement of the pipe and vibration.
Climbing the cross braces.

44. The type of drawing that views a building by looking directly at the front - top and side is referred to as a/an ___________ drawing.
The type of coating and current
Arrange a wire rope clamp so that the dead end has the U bolts
orthographic
2.31ft

45. What is the formula to figure take off on a 45 degree elbow?

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46. A guard rail system must withstand a minimum force of __________ pounds.
Insufficient condensate drainage
The type of coating and current
200 lbs
Alloying

47. What causes water hammer?
In the hot water heating pumps discharge piping.
set point
Insufficient condensate drainage
Raise the load

48. In one cubic foot there are _________ cubic inches.
To provide movement cause from a change in temperature
Down Stream
62.4lbs
1728

49. What does the evaporator do?
On low side of the system and expands liquid to low pressure gas.
To provide movement cause from a change in temperature
.135 cu ft
840

50. The specific gravity of a gas is relative to the specific weight of _______________ - which has a specific gravity of one.
Pipe strain
falls
Softens it
Air