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. What does the stamp Oxy-Med stand for on copper tubing?
The tubing has been cleaned for oxygen service
an eccentric reducer flat on top
1.25'(inch)
Latent

2. A mixing valve has ___ inlets and ___ outlets.
Provide oxygen barrier - stabilize and direct the force of the arc and to gather impurities in the form of slag.
2 and 1
Primer
Cavitation

3. If the travel of a 45 degree offset is known - what formula can be used to find the advance?
.707 x Travel
.0361
15 PSI
Schedule 10

4. OSHA was enacted to...
protect worker safety and health
Flooded
Before the strainer and fully open.
Spring hanger

5. What is installed after the isolation valve and before the trap union on a standard trap assembly?
Strainer
discharge
Alloying
8 5/8'(inch)

6. How far should a copper tube be inserted into a cup for a brazed joint?
212 degrees F
hydrometer
All the way to the shoulder
Globe valve

7. A cooling tower must have a ________ or be open-site.
2.31ft
Backflow preventer
On high side of the system and turns gas to liquid.
Strainer

8. A fan coil uses ______ to distribute heating or cooling to the space.
Flat and horizontal positions
Depends on the desired action if the disc or plug becomes detatched from the stem. (Fail open or Fail closed)
Forced convection - because the FAN forces convection!
Choked position

9. The treatment of liquids at rest is known as...
Fuse
Flashing
Beam clamp
Hydrostatics

10. An increase in pressure will cause the boiling point of water to ________...
4 1/2'(inch)
25 feet
Spring hanger
Increase

11. Why can flux be omitted in a brazed joint?
The flux is in the filler material
To reduce the pressure from the cylinders to safe and workable pressures
All position
3 1/2'(inch)

12. The change in state from a liquid to gas is known as...
the type of coating and current
Vaporization
6 5/8'(inch)
Multiply the length of the hypotenuse of the roll and the set by 1.414

13. To properly align a flange you must perform what is commonly called a ______ hole...
Protection for loss of water in the boiler.
Two Hole
10 feet
1 5/16'(inch)

14. The treatment of liquids in motion is known as...
Backflow preventer
Positive
The flow of a liquid into a small space
Hydraulics

15. A diamond on an instrumentation loop diagram encloses information concerning...
Steam
Coating
Set point
Ammonia

16. Which of the following is a key element of a comprehensive safety and health program?
Softener
7.0
Increase in friction
Hazard prevention and control.

17. OD for 3'(inch)

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18. There are __________ cubic inches in a gallon.
231
1
Steam
The stud bolt is stronger than a machine bolt of the same size and material.

19. In a Hydronic heating system - units at the top of the system not heating are likely to be...
Tagged and removed from service.
Air Bound
The same OD as the branch
no valves permitted

20. What is on the low side of the vapor compression cycle?
Conduction - convection and radiant.
The Evaporator
set point
212 degrees F

21. OD for 1/2'(inch)

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22. What does GFCI stand for?
The same ID as the branch
Ground Fault Circuit Interrupter
steel to copper joints
Pipe penetration

23. What is the formula to figure the area of a circle?
West of the building
Flash Tank
The science of heat transfer using water.
radius squared times PI

24. What is typically a final control element?
dry expansion
Guide - Anchor - Guide
Conduction - convection and radiant.
Valve

25. The main cause of undercutting is...
The tubing has been cleaned for oxygen service
protect worker safety and health
Too fast of a travel rate
Remote bulb

26. In a refrigeration system a condensable gas is...
Never
2 3/8'(inch)
Steam
Ammonia

27. The combining of more than one metal is...
Alloying
maximum rated capacity
Protection for loss of water in the boiler.
Arrange a wire rope clamp so that the dead end has the U bolts

28. What is the minimum safe clearance between cranes and energized power lines operating at 50kV or below?
10 feet
In the hot water heating pumps discharge piping.
Globe
Bumping

29. OD for 8'(inch)

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30. Which of the following is NOT a reason for using cutting oil when threading pipe?
Waterlogged
Allow moisture to escape
Red.. think M&M is RED
To protect the threads from rust.

31. The pipe that connects the steam header to the boiler return connection is the...
near the middle of the jaws
Level the 90 in horizontal position determine inside arc - backside arc and face to center dimensions for 60 degree elbow - mark and cut
1
Equalizing line

32. In one cubic foot there are _________ cubic inches.
4 times
1728
Air Bound
Basket

33. A schematic drawing is...
3.1416
Not to scale - does not show locations of equipment. It shows pipe size and flow.
Flooded
14.7 psia

34. What type of valve should be used to bypass a control valve?
Point thumb up
Two Hole
Controller
Globe valve

35. To stop all crane movement the ______ signal should be used.
BUT
Provide oxygen barrier - stabilize and direct the force of the arc and to gather impurities in the form of slag.
Dog Everything
Flux

36. Horizontal steam supply piping should be reduced in size by using...
Eccentric reducer (flat on top)
Pipe strain
Anchors
Crimson... think aCRimson

37. How often should the atmosphere be tested in a confined space?
1 foot
Controller
Continuously
In the direction of flow

38. One pound of water pressure is equal to...
Flux
ALWAYS
2.31ft
Snubber

39. To assemble a 4 bolt flange...
1.5
200 lbs
A pry bar
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.

40. When using a cable come-a-long - what safety device will indicate overloading?
.0361
handle will bend
Water
All the way to the shoulder

41. The device that controls the pressure in a low pressure steam boiler is called a...
Pressuretrol
Body belts
Loosen the far bolts first
100% of the rated capacity

42. When selecting a hanger for a piping system you should consider...
galvanized
Backflow preventer
The system temperature - thermal and dynamic movement of the pipe and vibration.
Ammonia

43. The letters MSDS stand for...
Material Safety Data Sheet
lower hook
2 and 1
NEVER!

44. What is the welding position 2 - on the electrode mean?
Ground Fault Circuit Interrupter
15 PSI
6 5/8'(inch)
Flat and horizontal positions

45. What type of Copper tubing is not identified by color on the tubing itself?
Point at the base and sweep the base with the extinguisher
soft tempered
Large end to smaller end to center(bull)
Pneumatics

46. What is used to soften PVC and remove the gloss?
near the middle of the jaws
Fusion
When a large volume of condensate is generated
Primer

47. What is the standard pressure range for a pneumatic signal?
3 to 15 psi
All the way to the shoulder
compression
Large end to smaller end to center(bull)

48. A condensate receiver is used when...
Before the strainer and fully open.
When a large volume of condensate is generated
14'(inch)
orthographic

49. When ordering ACR copper specify the size by...
Above the main
cool and lubricate the die
OD
true isometric

50. The only entity that has the responsibility and authority to appoint the competent person is...
Alloying
blow the valves for a moment
the employer
handle will bend