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. The best method to ensure that a plastic joint is made properly - you should...
Insert pipe into fitting and turn 1/4 turn and hold
blow the valves for a moment
6 5/8'(inch)
With the weld at a 45 degree angle


2. One pound of water pressure is equal to...
Provide oxygen barrier - stabilize and direct the force of the arc and to gather impurities in the form of slag.
1:48 - because 1/4 of an inch is 1/48th of a foot
2.31ft
To chemically prepare the pieces for soldering


3. How much heat is required to raise 1/2 pound of water 1 degree F?
8.33 pounds
Hydraulics
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)
1/2 BTU


4. To fabricate a 60 degree elbow from a 90 you would...
.7854 x D squared
Insure progressively tighter fit
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.
Level the 90 in horizontal position determine inside arc - backside arc and face to center dimensions for 60 degree elbow - mark and cut


5. OD for 3'(inch)

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6. Zinc chills or metal fume fever are caused from welding on __________ steel.
lower hook
galvanized
Hydraulics
Protection for loss of water in the boiler.


7. To determine the set on a 45 degree offset you would multiply the travel by...
Level the 90 in horizontal position determine inside arc - backside arc and face to center dimensions for 60 degree elbow - mark and cut
.707
The flux is in the filler material
The type of coating and current


8. The ______ is used to protect the weld puddle from contamination in the SMAW process.
Air Bound
Alloying
Point at the base and sweep the base with the extinguisher
Flux


9. What type of hanger uses a spring that splits the rod?
75 degrees - also 4 to 1
Beam clamp
.01745 - 3.1416 - and .7854
Spring hanger


10. What should the outside attendant do to rescue a worker who shows physiological effects of exposure in a confined space?
steel to copper joints
Notify response team and allow them to rescue.
Center of the pipe
4 to 20 milliamps


11. What does a condenser do?
On high side of the system and turns gas to liquid.
piping
Tagged and removed from service.
14.7 psia


12. What is the formula to calculate thermal expansion?

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13. What type of copper tubing joint requires use of a ferrule?
Segmental
1.25'(inch)
set point
compression


14. What does a + plus sign mean?
4 to 20 milliamps
Dog Everything
Pipe penetration
steam and condensate flowing in the same direction


15. The last digit on a welding electrode refers to the __________ of the electrode.
Purge the line when brazing
Coating
Segmental
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)


16. An increase in pressure will cause the boiling point of water to ________...
Increase
dry expansion
Dog Everything
Thermostatic - Thermodynamic and Mechanical


17. What is the sum of all angles in a triangle?
Vaporization
14.7 psia
180
Increase


18. What is the best valve for throttling?
Globe
Ammonia
5 9/16'(inch)
4 to 20 milliamps


19. If the architectural scale is 1/4'(inch) equals 1 foot - the ratio would be...
1:48 - because 1/4 of an inch is 1/48th of a foot
sewage
compression
Manometer


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

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21. Where is a bourdon tube found?
5 9/16'(inch)
The pump creates a differential in pressure that moves the water.
In a pressure gauge
Large volumes of condensate flash back to liquid in the tank so it removes trapped steam from the condensate.


22. If you double pipe size the carrying capacity is increased...
4 times
dry expansion
9
Continuously


23. In a Hydronic heating system - units at the top of the system not heating are likely to be...
Air Bound
Flux
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.
the employer


24. When gripping a pipe with a pipe wrench - the wrench should be adjusted so the pipe is...
(Total Height - Elevation) * .433 = psig
near the middle of the jaws
dry expansion
Hazard prevention and control.


25. With a high pressure valve you should never _____ under pressure.
Remove the packing
Blue... think b-LLLLue
1 5/16'(inch)
Segmental


26. How do you determine gear ratios?

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27. The color code for type K copper is...
West of the building
Green... think KKelly GREEN
Body belts
Magnesium


28. What is the function of the covering on the electrodes during the process of '(inch)Shielded Metal Arc Welding'(inch)?
the core
With the weld at a 45 degree angle
steel to copper joints
Provide oxygen barrier - stabilize and direct the force of the arc and to gather impurities in the form of slag.


29. An oil separator is required on systems using...
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
Mechanical/Thermostatic
Its cheaper!
Ammonia


30. The weight of 1 cubic foot of water is...
Flash Tank
Controller
Primer
62.4lbs


31. A condensate receiver is used when...
3 1/2'(inch)
When a large volume of condensate is generated
2.31ft
The temperature that the joints are made - the flux and temperatures of the system


32. The amount of heat it takes to raise one pound of water one degree Fahrenheit is known as a...
15 Feet
BUT
8.33lbs
Body belts


33. An abrasive wheel should never run faster than it...
Clove hitch with a half hitch
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.
maximum rated capacity
MAPP - acetylene - and propane


34. How far should a copper tube be inserted into a cup for a brazed joint?
Body belts
Pressure rating
840
All the way to the shoulder


35. The specific weight of air and water is...
zinc
DWV
840
1


36. OD for 5'(inch)

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37. When changing pipe sizes in the horizontal supply or return lines of a two-pipe hot water heating system use...
1
Hazard prevention and control.
Eccentric reducers - flat on top
Point at the base and sweep the base with the extinguisher


38. What do the first two digits mean in E7018 electrodes?
Hydraulics
The tensile strength of the rod in PSI times 1 -000
Hydrostatics
maximum rated capacity


39. What effect does the fill pressure (static) have on a closed loop plumbing system?
Alloying
the employer
Groove
None


40. When loosening the bolts on a flange one should...
When a large volume of condensate is generated
Dog Everything
Loosen the far bolts first
cool and lubricate the die


41. The best knot to use when lifting pipe vertically is the...
The Evaporator
take-off must be subtracted from the end-to-center measurement.
Choked position
Clove hitch with a half hitch


42. Why is it necessary to use flux on a soldered joint?
Air
Red.. think M&M is RED
To chemically prepare the pieces for soldering
Protection for loss of water in the boiler.


43. What is not a requirement to size the steam trap on a heating unit?
steel to copper joints
Condensate pump size
1
The tensile strength of the rod in PSI times 1 -000


44. Which of the elements of a wire rope aid in absorbing '(inch)Shock Loads'(inch)?
the core
(Total Height - Elevation) * .433 = psig
After cutting
protect worker safety and health


45. OD for 8'(inch)

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46. Which of the following is the decimal equivalent of 5/8'(inch)
The flux is in the filler material
25' from any worker
Flash Tank
.625


47. To view the west elevation the viewer's perspective is from the...
.135 cu ft
Primer
Flashing
West of the building


48. The type of drawing that most closely resembles an object as the eye would see it is referred to as a/an __________ drawing.
Large end to smaller end to center(bull)
the employer
Insure progressively tighter fit
true isometric


49. Which way should the bevel face on an orifice plate?
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.
Down Stream
Latent
ALWAYS


50. What size hole should be cut into a main to saddle ON a smaller pipe?
Quarter
The same ID as the branch
Vaporization
To chemically prepare the pieces for soldering