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Test your basic knowledge |
Plumbing Certification
Start Test
Study First
Subject
:
certifications
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. With a high pressure valve you should never _____ under pressure.
Remove the packing
Purge the line when brazing
250 degrees
Roller hangers
2. To properly align a flange you must perform what is commonly called a ______ hole...
Two Hole
1
15 PSI
Forced convection - because the FAN forces convection!
3. What is the formula to calculate thermal expansion?
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4. What size hole should be cut into a main to saddle ON a smaller pipe?
Increase in friction
Too fast of a travel rate
The tubing has been cleaned for oxygen service
The same ID as the branch
5. What type of Copper tubing is not identified by color on the tubing itself?
Beam clamp
soft tempered
10 feet
Basket
6. Oil is used on a pipe machine to...
cool and lubricate the die
8.33 pounds
The flux is in the filler material
100% of the rated capacity
7. Exits from a trench 150' long and 4' deep must be located within how many feet of a worker in the trench?
Tagged and removed from service.
BUT
.491lbs
25 feet
8. What type of flame should be used to cut carbon steel?
Fuse
Pressure Rating
Neutral
Thermostatic - Thermodynamic and Mechanical
9. The centerline of piping in a horizontal plane on an isometric drawing is most generally drawn at __________ degrees from the horizontal.
Expansion loop.
6 5/8'(inch)
30 Degrees
take-off must be subtracted from the end-to-center measurement.
10. What are the main differences between soldering and brazing?
Not to scale - does not show locations of equipment. It shows pipe size and flow.
Valve
Purge the line when brazing
The temperature that the joints are made - the flux and temperatures of the system
11. What should be done first when preparing a copper joint?
Clean all surfaces
Controller
Hydrostatic
Arrange a wire rope clamp so that the dead end has the U bolts
12. The type of drawing that views a building by looking directly at the front - top and side is referred to as a/an ___________ drawing.
Fusion
orthographic
Pressure rating
Backflow preventer
13. What is used to soften PVC and remove the gloss?
Primer
Alloying
Guide - Anchor - Guide
foot valve
14. What are 3 fuel gases used for heating pipe or tubing?
62.4 pounds
MAPP - acetylene - and propane
near the middle of the jaws
Green... think KKelly GREEN
15. What is the expansion and compression of water vapor in a pump?
Cavitation
Eccentric reducer (flat on top)
Expansion loop.
Thermostatic - Thermodynamic and Mechanical
16. Theoretically - a pump can raise water by suction approximately __________ feet vertically.
When a large volume of condensate is generated
34 feet
Its cheaper!
9
17. The 6G welding position is...
Not to scale - does not show locations of equipment. It shows pipe size and flow.
With the weld at a 45 degree angle
Climbing the cross braces.
5 9/16'(inch)
18. A vent is not needed on a condensate receiver when...
Set point
Mechanical return is used.
.075lbs
Saturated
19. What does a + plus sign mean?
Coating
Flooded
Clove hitch with a half hitch
Pipe penetration
20. The function of a steam trap is to prevent the flow of ________________ - while allowing condensate and non-condensable gases to pass through.
Steam
Mechanical return is used.
.0361
Purge the line when brazing
21. What type of expansion joint utilizes mechanical movement?
To provide movement cause from a change in temperature
Ball joint - Bellows Joint and Packed Joint
Fuel - Heat - Oxygen
Increase
22. When should a person designated as an attendant attempt to rescue a worker that is trapped?
Never
Solder joints
Absolute
.707 x Travel
23. To determine the face to center measurement of a long radius 90 degree elbow - multiply the pipe size by...
25' from any worker
Flat position only
near the middle of the jaws
1.5
24. What does the stamp Oxy-Med stand for on copper tubing?
Ammonia
Before the strainer and fully open.
Air
The tubing has been cleaned for oxygen service
25. The specific gravity of a liquid can only be measured using the following instrument...
hydrometer
Crimson... think aCRimson
Argon
West of the building
26. The smallest nominal size DWV copper tube is...
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27. Ladders with visible defects - such as broken rungs - cracked side rails - or broken steps must be...
sewage
Thermostatic - Thermodynamic and Mechanical
2.31ft
Tagged and removed from service.
28. Which of the following is NOT acceptable as part of a personal fall arrest system?
Water
100% of the rated capacity
Yellow.. think Dee Double U is yelloWWW
Body belts
29. A float and thermostatic trap is a...
25' from any worker
Climbing the cross braces.
galvanized
Mechanical/Thermostatic
30. To assemble a 4 bolt flange...
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.
return fitting
In a pressure gauge
25 feet
31. Which of the following is the decimal equivalent of 5/8'(inch)
.625
The science of heat transfer using water.
maximum rated capacity
2.31ft
32. What is the purpose for a weep hole in a saddle pad?
soft tempered
Hydrostatics
Dry expansion type
Allow moisture to escape
33. The symbol for pi is equivalent to...
galvanized
Controller
3.1416
.625
34. In a refrigeration system a condensable gas is...
250 degrees
Dry expansion type
Tagged and removed from service.
Ammonia
35. The density of water is...
62.4
.433psi
2.31ft
.7854 x D squared
36. A fan coil uses ______ to distribute heating or cooling to the space.
Cavitation
Air Bound
Forced convection - because the FAN forces convection!
When a large volume of condensate is generated
37. An abrasive wheel should never run faster than it...
maximum rated capacity
In the direction of flow
Schedule 10
13/16'(inch)
38. Standard atmospheric pressure at sea level is _____...
14.7 psia
231
Tagged and removed from service.
8.33lbs
39. The specific weight of air and water is...
1
Never
Valve
The pump creates a differential in pressure that moves the water.
40. The amount of heat necessary bring about a change of state from solid to liquid or liquid to gas is known as _______________ heat.
4 1/2'(inch)
Softens it
radius squared times PI
Latent
41. A bushing is NOT a good replacement for a reducer because...
3.1416
Quarter
Its cheaper!
25' from any worker
42. When ordering ACR copper specify the size by...
foot valve
Point at the base and sweep the base with the extinguisher
OD
The type of coating and current
43. In one cubic foot there are _________ cubic inches.
take-off must be subtracted from the end-to-center measurement.
1728
.135 cu ft
Two Hole
44. What is the main reason for the taper on a pipe thread?
Immersion sensor
Height * .433 = psig
The flux is in the filler material
Insure progressively tighter fit
45. The device that controls the pressure in a low pressure steam boiler is called a...
8.33lbs
Conduction - convection and radiant.
Pressuretrol
the core
46. The sum of atmospheric and gauge pressure is known as __________ pressure.
Protection for loss of water in the boiler.
Absolute
Large volumes of condensate flash back to liquid in the tank so it removes trapped steam from the condensate.
15 PSI
47. Which type of orifice plate is designed to measure flow of liquids containing solids?
Segmental
The flux burns and the joint becomes ineffective
After cutting
To allow for thermal movement
48. What should be done to prepare a flange for the gasket installation?
blow the valves for a moment
Remove any paint or rust.
In a pressure gauge
take-off must be subtracted from the end-to-center measurement.
49. What size hole should be cut into a main to saddle IN a smaller pipe?
Spiral Wound
The same OD as the branch
Softens it
Expansion loop.
50. Horizontal steam supply piping should be reduced in size by using...
The impeller
13/16'(inch)
Eccentric reducer (flat on top)
Latent