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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. In one cubic foot there are _________ cubic inches.
The system temperature - thermal and dynamic movement of the pipe and vibration.
Backflow preventer
Steam
1728

2. The combining of more than one metal is...
Alloying
return fitting
Pneumatics
Large end to smaller end to center(bull)

3. The color code for ACR copper is...
Not to scale - does not show locations of equipment. It shows pipe size and flow.
3.1416
Crimson... think aCRimson
8.33lbs

4. What type of valve should be used to bypass a control valve?
Too fast of a travel rate
near the middle of the jaws
Loosen the far bolts first
Globe valve

5. The centerline of piping in a horizontal plane on an isometric drawing is most generally drawn at __________ degrees from the horizontal.
discharge
Schedule 10
steel to copper joints
30 Degrees

6. 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?
To chemically prepare the pieces for soldering
Insure progressively tighter fit
.0361
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.

7. The face to center measurement of any welded angle fitting equals...
tangent 1/2 angle x radius
Spiral Wound
Center of the pipe
2.31ft

8. When a pipe size is decreased by half - the carrying capacity of the pipe decreases by...
Quarter
Ammonia
10 feet
Bight - running end and standing part

9. What type of copper is recommended for refrigeration?
Continuously
3 to 15 psi
180
Type K

10. An oil separator is required on systems using...
Valve
Ammonia
The same OD as the branch
62.4lbs

11. Why can flux be omitted in a brazed joint?
The flux is in the filler material
250 degrees
Flat and horizontal positions
Saturated

12. If the architectural scale is 1/4'(inch) equals 1 foot - the ratio would be...
15 Feet
1:48 - because 1/4 of an inch is 1/48th of a foot
Remote bulb
Too fast of a travel rate

13. What are the main differences between soldering and brazing?
The temperature that the joints are made - the flux and temperatures of the system
Pressuretrol
Eccentric reducer (flat on top)
sewage

14. The device that controls the pressure in a low pressure steam boiler is called a...
The impeller
The flux burns and the joint becomes ineffective
Pressuretrol
falls

15. The specific weight of mercury is...
Thermostatic - Thermodynamic and Mechanical
Flat position only
.0361
.135 cu ft

16. How much does 1 cubic foot of air weigh?
.075lbs
The same ID as the branch
Segmental
Valve

17. One gallon of water weighs?
Positive
Basket
Remove the packing
8.33 pounds

18. Horizontal steam supply piping should be reduced in size by using...
Raise the load
Softens it
Eccentric reducer (flat on top)
7.0

19. The specific gravity of a gas is relative to the specific weight of _______________ - which has a specific gravity of one.
orthographic
Sensor
Air
Pipe penetration

20. A mixing valve has ___ inlets and ___ outlets.
Basket
The type of coating and current
2 and 1
In the direction of flow

21. What type of Copper tubing is not identified by color on the tubing itself?
Insure progressively tighter fit
Not to scale - does not show locations of equipment. It shows pipe size and flow.
soft tempered
Eccentric reducers - flat on top

22. A thermostatic steam trap that fails in the closed position would cause a heating unit to become...
Waterlogged
62.4lbs
Raise the load
Up and Down

23. Guides are used near...
Large volumes of condensate flash back to liquid in the tank so it removes trapped steam from the condensate.
Loosen the far bolts first
Anchors
The same ID as the branch

24. A __________ displacement pump discharges a definite quantity of liquid for each cycle.
Positive
radius squared times PI
Forced convection - because the FAN forces convection!
1

25. To sense the temperature remotely from the thermostat location you would use...
5 9/16'(inch)
BCuP - Stands for Brazed Copper Phosphorus
.707
Remote bulb

26. Which of the following types of clamps are used to dampen a pipe's movement?
.075lbs
The flow of a liquid into a small space
14'(inch)
Snubber

27. When gripping a pipe with a pipe wrench - the wrench should be adjusted so the pipe is...
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.
Strainer
6 5/8'(inch)
near the middle of the jaws

28. The treatment of liquids at rest is known as...
14'(inch)
Flat and horizontal positions
the core
Hydrostatics

29. Calculate head pressure of a vertical pipe at specific elevations.
Mechanical/Thermostatic
(Total Height - Elevation) * .433 = psig
MAPP - acetylene - and propane
Saturated

30. What is typically a final control element?
Roller hangers
Valve
tangent 1/2 angle x radius
9

31. Why is it necessary to use roller hangers?
Sch 40
Vaporization
To allow for thermal movement
Above the main

32. What is capillary action?
The flow of a liquid into a small space
Waterlogged
handle will bend
14.7psia - always in PSI-A

33. Which of the following is NOT acceptable as part of a personal fall arrest system?
Body belts
Hydrostatics
15 Feet
ALWAYS

34. What causes water hammer?
Multiply the length of the hypotenuse of the roll and the set by 1.414
Insufficient condensate drainage
100% of the rated capacity
Prevailing wind speed and direction - environmental concerns - zoning requirements

35. A device that mechanically attaches to the side of a flange on a beam is called a...
A pry bar
On low side of the system and expands liquid to low pressure gas.
Beam clamp
2 and 1

36. What does GFCI stand for?
Globe
.0361
The temperature that the joints are made - the flux and temperatures of the system
Ground Fault Circuit Interrupter

37. What is the formula to calculate thermal expansion?

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38. The pipe that connects the steam header to the boiler return connection is the...
Arrange a wire rope clamp so that the dead end has the U bolts
Equalizing line
8.33 pounds
Multiply the length of the hypotenuse of the roll and the set by 1.414

39. To assemble a 4 bolt flange...
14'(inch)
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.
Flux
10 feet

40. What is the welding position 3 - on the electrode mean?
The flux burns and the joint becomes ineffective
piping
Mechanical return is used.
Flat position only

41. OD for 2'(inch)

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42. The color code for type M copper is...
Red.. think M&M is RED
Equalizing line
pi * radius squared
The flux burns and the joint becomes ineffective

43. Soldered joints should never be used on systems above...
3 1/2'(inch)
The pump creates a differential in pressure that moves the water.
250 degrees
the employer

44. Formula for area of a circle?
Fuel - Heat - Oxygen
Alloying
pi * radius squared
.491lbs

45. What type of hanger uses a spring that splits the rod?
The stud bolt is stronger than a machine bolt of the same size and material.
Groove
5 9/16'(inch)
Spring hanger

46. Which of the elements of a wire rope aid in absorbing '(inch)Shock Loads'(inch)?
Spring hanger
Argon
The stud bolt is stronger than a machine bolt of the same size and material.
the core

47. To view the west elevation the viewer's perspective is from the...
West of the building
3.1416
The pump creates a differential in pressure that moves the water.
.0361

48. To fabricate a 60 degree elbow from a 90 you would...
Cavitation
Level the 90 in horizontal position determine inside arc - backside arc and face to center dimensions for 60 degree elbow - mark and cut
Flash Tank
Eccentric reducer (flat on top)

49. The color code for type L copper is...
1728
To protect the threads from rust.
Blue... think b-LLLLue
Large volumes of condensate flash back to liquid in the tank so it removes trapped steam from the condensate.

50. The function of a steam trap is to prevent the flow of ________________ - while allowing condensate and non-condensable gases to pass through.
soft tempered
Waterlogged
Sch 80 Steel pipe
Steam