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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. Why is it necessary to use roller hangers?
To allow for thermal movement
Air
supporter of combustion
Coating

2. What do the first two digits mean in E7018 electrodes?
(Total Height - Elevation) * .433 = psig
Air
The tensile strength of the rod in PSI times 1 -000
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

3. What should be done first when preparing a copper joint?
Center of the pipe
14.7psia - always in PSI-A
Arrange a wire rope clamp so that the dead end has the U bolts
Clean all surfaces

4. Steam condensate lines should use...
Sch 80 Steel pipe
212 degrees F
Raise the load
Pressuretrol

5. What size hole should be cut into a main to saddle IN a smaller pipe?
Schedule 10
The same OD as the branch
the type of coating and current
Flat position only

6. Guides are used near...
Anchors
set point
The temperature that the joints are made - the flux and temperatures of the system
10 feet

7. The density of 1 cubic inch of Mercury is...
Increase in friction
.491lbs
Increase the pressure when the temperature increases
Waterlogged

8. Steam condensate lines should be installed on...
Spiral
Roller hangers
To protect the threads from rust.
Remove the packing

9. The smallest nominal size DWV copper tube is...

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10. A Hartford loop is used for...
Primer
Blue... think b-LLLLue
The system temperature - thermal and dynamic movement of the pipe and vibration.
Protection for loss of water in the boiler.

11. What is the minimum safe clearance between cranes and energized power lines operating at 50kV or below?
840
Remote bulb
Increase
10 feet

12. What effect does the fill pressure (static) have on a closed loop plumbing system?
None
Spiral Wound
When a large volume of condensate is generated
an eccentric reducer flat on top

13. The last two digits on an E-6010 electrode specify
dry expansion
The type of coating and current
soft tempered
Act as a safety device to shut off the motor if the operator's foot is removed from the switch.

14. What is the welding position 1 - on the electrode mean?
Hazard prevention and control.
Positive
The stud bolt is stronger than a machine bolt of the same size and material.
All position

15. What is the main reason for the taper on a pipe thread?
cool and lubricate the die
Insure progressively tighter fit
15 Feet
Expansion loop.

16. What is on the low side of the vapor compression cycle?
8.33 pounds
The temperature that the joints are made - the flux and temperatures of the system
blow the valves for a moment
The Evaporator

17. What causes pressure drop?
Increase in friction
None
Magnesium
OD

18. When brazing for medical gas or refrigeration always...
13/16'(inch)
steam and condensate flowing in the same direction
Purge the line when brazing
3 1/2'(inch)

19. If a horizontal pipe connecting to the suction side of a pump requires a reducer - it should be connected with...
Anchors
Insure progressively tighter fit
an eccentric reducer flat on top
Before the strainer and fully open.

20. The color code for type M copper is...
Red.. think M&M is RED
Spiral
near the middle of the jaws
Tagged and removed from service.

21. The face to center measurement of any welded angle fitting equals...
tangent 1/2 angle x radius
Continuously
Dog Everything
.707 x Travel

22. What are 3 fuel gases used for heating pipe or tubing?
Allow moisture to escape
The system temperature - thermal and dynamic movement of the pipe and vibration.
set point
MAPP - acetylene - and propane

23. What is the weakest part of a chain hoist?
After cutting
The flux burns and the joint becomes ineffective
orthographic
lower hook

24. How much heat is required to raise 1/2 pound of water 1 degree F?
Spiral
Before the strainer and fully open.
1/2 BTU
Increase the pressure when the temperature increases

25. The specific gravity of a liquid can only be measured using the following instrument...
Forced convection - because the FAN forces convection!
Globe valve
Snubber
hydrometer

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

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27. How much does 1 cubic foot of air weigh?
Remote bulb
.075lbs
The type of coating and current
Before the strainer and fully open.

28. A concentric reducer could be used to connect to a horizontal pump _______________ line.
8.33 pounds
Flat position only
discharge
Insert pipe into fitting and turn 1/4 turn and hold

29. OD for 1/2'(inch)

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30. Factors in considering the site selection for a new cooling tower.
dry expansion
The temperature that the joints are made - the flux and temperatures of the system
Ammonia
Prevailing wind speed and direction - environmental concerns - zoning requirements

31. A gallon of water weighs...
Insufficient condensate drainage
8.33lbs
Quarter
5 9/16'(inch)

32. Which of the following is a key element of a comprehensive safety and health program?
The type of coating and current
Set point
Increase the pressure when the temperature increases
Hazard prevention and control.

33. A rating of 150# refers to a flange's...
Sch 40
Pressure rating
Axis of pipe should be on a 45 degree
.7854 x D squared

34. To determine the set on a 45 degree offset you would multiply the travel by...
Softener
.707
Act as a safety device to shut off the motor if the operator's foot is removed from the switch.
Sensor

35. What is typically a final control element?
8.33 pounds
Valve
Immersion sensor
Groove

36. What is installed after the isolation valve and before the trap union on a standard trap assembly?
Not to scale - does not show locations of equipment. It shows pipe size and flow.
protect worker safety and health
the employer
Strainer

37. An increase in pressure will cause the boiling point of water to ________...
.625
Increase
2 and 1
Flashing

38. When selecting a hanger for a piping system you should consider...
Not to scale - does not show locations of equipment. It shows pipe size and flow.
The system temperature - thermal and dynamic movement of the pipe and vibration.
2 3/8'(inch)
foot valve

39. You should never blow your clothes off with oxygen because oxygen is a/an
Pressure Rating
protect worker safety and health
1.25'(inch)
supporter of combustion

40. A mixing valve has ___ inlets and ___ outlets.
2 and 1
Pipe strain
The same OD as the branch
Dry expansion type

41. Since _______________ is virtually incompressible - pressure has little effect on its volume.
Increase
Water
Fusion
BUT

42. One gallon of water occupies how many cubic feet?
Sch 80 Steel pipe
Choked position
.135 cu ft
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

43. The change in state from solid to liquid is known as...
2 and 1
10 feet
Fusion
Magnesium

44. What should be done to prepare a flange for the gasket installation?
Remove any paint or rust.
supporter of combustion
the type of coating and current
Snubber

45. One atmosphere is equal to...
Bumping
Level the 90 in horizontal position determine inside arc - backside arc and face to center dimensions for 60 degree elbow - mark and cut
14.7psia - always in PSI-A
Green... think KKelly GREEN

46. What is the sum of all angles in a triangle?
A pry bar
180
36'(inch)
30 Degrees

47. When lifting objects with sharp edges you should use a...
7.48
Softener
Anchors
maximum rated capacity

48. When a loop is needed at any point between ends of a rope - the proper knot to tie is the...
blow the valves for a moment
bowline on a bight
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
Air Bound

49. Which of the following constants are used when working with circles and areas?
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.
8 5/8'(inch)
62.4
.01745 - 3.1416 - and .7854

50. 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?
1 5/16'(inch)
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.
Up and Down
Above the main