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. A fan coil uses ______ to distribute heating or cooling to the space.
ALWAYS
Expansion Device
The same ID as the branch
Forced convection - because the FAN forces convection!


2. OD for 8'(inch)

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3. Annealing copper...
To protect the threads from rust.
handle will bend
Softens it
Saturated


4. How often should the atmosphere be tested in a confined space?
Continuously
On low side of the system and expands liquid to low pressure gas.
Up and Down
Valve


5. The combining of more than one metal is...
Point thumb up
Alloying
set point
Too fast of a travel rate


6. A concentric reducer could be used to connect to a horizontal pump _______________ line.
set point
Discharge
5 9/16'(inch)
Above the main


7. Which of the following is an essential element necessary to produce an ordinary fire?
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
Point at the base and sweep the base with the extinguisher
Arrange a wire rope clamp so that the dead end has the U bolts


8. The purpose of the foot switch on a power-operated pipe cutting and threading machine is to?

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9. What is used to soften PVC and remove the gloss?
Mechanical return is used.
Argon
Latent
Primer


10. If a pump is operating under static suction lift conditions - a __________ may be installed in the suction line to avoid losing the pump's prime each time the pump shuts off.
.707
Increase the pressure when the temperature increases
take-off must be subtracted from the end-to-center measurement.
foot valve


11. A mixing valve has ___ inlets and ___ outlets.
2 3/8'(inch)
Insert pipe into fitting and turn 1/4 turn and hold
the type of coating and current
2 and 1


12. Which of the following is NOT a reason for using cutting oil when threading pipe?
To protect the threads from rust.
Hydrostatics
34 feet
To reduce the pressure from the cylinders to safe and workable pressures


13. The last digit on a welding electrode refers to the __________ of the electrode.
Coating
The flux is in the filler material
1.25'(inch)
15 PSI


14. What are 3 fuel gases used for heating pipe or tubing?
Hydrostatics
Equalizing line
14'(inch)
MAPP - acetylene - and propane


15. The pipe size of a pipe changes from the ID to the OD on what pipe size?

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16. A thermostatic steam trap that fails in the closed position would cause a heating unit to become...
Pipe strain
Waterlogged
pi * radius squared
Ball joint - Bellows Joint and Packed Joint


17. When gripping a pipe with a pipe wrench - the wrench should be adjusted so the pipe is...
Pipe strain
near the middle of the jaws
250 degrees
Schedule 10


18. With a high pressure valve you should never _____ under pressure.
On low side of the system and expands liquid to low pressure gas.
Remove the packing
Segmental
Increase the pressure when the temperature increases


19. The ______ is used to protect the weld puddle from contamination in the SMAW process.
Remove the packing
6 5/8'(inch)
1728
Flux


20. All of the following are process control elements EXCEPT...
Its cheaper!
75 degrees - also 4 to 1
piping
Discharge


21. A concentric reducer could be used to connect to a horizontal pump _______________ line.
discharge
Solder joints
The same ID as the branch
Bumping


22. Which rigging configuration has the greatest sling strength?
The tubing has been cleaned for oxygen service
Coating
.075lbs
Basket


23. What occurs in a flash tank?
Condensate pump size
Remove any paint or rust.
Eccentric reducers - flat on top
Large volumes of condensate flash back to liquid in the tank so it removes trapped steam from the condensate.


24. What does a condenser do?
Conduction - convection and radiant.
Positive
Tagged and removed from service.
On high side of the system and turns gas to liquid.


25. A schematic drawing is...
orthographic
Not to scale - does not show locations of equipment. It shows pipe size and flow.
8.33lbs
.7854 x D squared


26. What causes water hammer?
Insufficient condensate drainage
Primer
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)
Crimson... think aCRimson


27. To properly align a flange you must perform what is commonly called a ______ hole...
Expansion loop.
Discharge
Two Hole
Spiral


28. What is the standard for an electronic signal?
Arrange a wire rope clamp so that the dead end has the U bolts
DWV
4 to 20 milliamps
14.7psia - always in PSI-A


29. A cooling tower must have a ________ or be open-site.
the employer
To provide movement cause from a change in temperature
Backflow preventer
To reduce the pressure from the cylinders to safe and workable pressures


30. Use of air as a power source is known as...
Pneumatics
The stud bolt is stronger than a machine bolt of the same size and material.
Manometer
supporter of combustion


31. When is it safe to remove the old packing from a valve that is under pressure?
Down Stream
NEVER!
.491lbs
Pressure Rating


32. OD for 4'(inch)

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33. What is the purpose of the oxygen and acetylene regulators?
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)
BCuP - Stands for Brazed Copper Phosphorus
pi * radius squared
To reduce the pressure from the cylinders to safe and workable pressures


34. The specific weight of air and water is...
To provide movement cause from a change in temperature
1
steel to copper joints
Notify response team and allow them to rescue.


35. Which of the elements of a wire rope aid in absorbing '(inch)Shock Loads'(inch)?
Guide - Anchor - Guide
Purge the line when brazing
the core
34 feet


36. The last two digits on an E-6010 electrode specify...
orthographic
Anchors
the type of coating and current
1.25'(inch)


37. What is the welding position 1 - on the electrode mean?
All position
100% of the rated capacity
3 1/2'(inch)
.0361


38. OD for 5'(inch)

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39. An oil separator is required on systems using...
62.4 pounds
25 feet
Ammonia
bowline on a bight


40. What type of copper is recommended for refrigeration?
9
(Total Height - Elevation) * .433 = psig
Pipe penetration
Type K


41. How many 2'(inch) pipes can be supplied from a 6'(inch) header?
Depends on the desired action if the disc or plug becomes detatched from the stem. (Fail open or Fail closed)
250 degrees
Mechanical/Thermostatic
9


42. OD for 3'(inch)

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43. What type of valve should be used to bypass a control valve?
Steam
Neutral
To allow for thermal movement
Globe valve


44. The symbol for pi is equivalent to...
3.1416
falls
steam and condensate flowing in the same direction
13/16'(inch)


45. How much heat is required to raise 1/2 pound of water 1 degree F?
9
Absolute
The stud bolt is stronger than a machine bolt of the same size and material.
1/2 BTU


46. A vertical line in an isometric drawing represents...
NEVER!
Up and Down
8.33lbs
2 and 1


47. What is installed after the isolation valve and before the trap union on a standard trap assembly?
.491lbs
62.4 pounds
BUT
Strainer


48. To determine the travel for a 45 degree rolling offset you would...
212 degrees F
Multiply the length of the hypotenuse of the roll and the set by 1.414
Flat and horizontal positions
Sensor


49. A condensate receiver is used when...
Increase the pressure when the temperature increases
When a large volume of condensate is generated
Level the 90 in horizontal position determine inside arc - backside arc and face to center dimensions for 60 degree elbow - mark and cut
protect worker safety and health


50. A system which the refrigerant is in the shell and cools the fluid in the tubes is...
Too fast of a travel rate
75 degrees - also 4 to 1
2 3/8'(inch)
Flooded