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. OD for 2'(inch)

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2. What are the three rope parts used in tying knots and hitches?
A pry bar
Snubber
Bight - running end and standing part
handle will bend


3. Which of the following constants are used when working with circles and areas?
Magnesium
Yellow.. think Dee Double U is yelloWWW
1.25'(inch)
.01745 - 3.1416 - and .7854


4. How often should the atmosphere be tested in a confined space?
Fuse
Continuously
Point at the base and sweep the base with the extinguisher
Guide - Anchor - Guide


5. When loosening the bolts on a flange one should...
Material Safety Data Sheet
Loosen the far bolts first
.707 x Travel
6 5/8'(inch)


6. Which of the following is the decimal equivalent of 5/8'(inch)
Softens it
.625
The science of heat transfer using water.
Eccentric reducer (flat on top)


7. A mixing valve has ___ inlets and ___ outlets.
2 and 1
Eccentric reducers - flat on top
Tagged and removed from service.
When a large volume of condensate is generated


8. What causes pressure drop?
Increase in friction
The tubing has been cleaned for oxygen service
.0361
Choked position


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

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10. What is the minimum thickness for threading PVC pipe?
Sch 40
On high side of the system and turns gas to liquid.
Spiral Wound
With the weld at a 45 degree angle


11. When ordering ACR copper specify the size by...
OD
Alloying
Choked position
Height * .433 = psig


12. To raise the boom of a crane you would...
Point thumb up
Spiral
After cutting
Blue... think b-LLLLue


13. To figure the end-to-end measurement of a piece of pipe when the end-to-end center measurement is known the...
Dry expansion type
Notify response team and allow them to rescue.
Flashing
take-off must be subtracted from the end-to-center measurement.


14. If the travel of a 45 degree offset is known - what formula can be used to find the advance?
.707 x Travel
To chemically prepare the pieces for soldering
Pipe strain
Snubber


15. Which is the correct formula for the area of a circle?
1
.7854 x D squared
Arrange a wire rope clamp so that the dead end has the U bolts
Green... think KKelly GREEN


16. The treatment of liquids at rest is known as...
Hydrostatics
Dog Everything
After cutting
212 degrees F


17. The color code for type '(inch)K'(inch) copper is?
Level the 90 in horizontal position determine inside arc - backside arc and face to center dimensions for 60 degree elbow - mark and cut
6 5/8'(inch)
Green
Hydrostatic


18. A thermostatic steam trap that fails in the closed position would cause a heating unit to become...
Waterlogged
.0361
Multiply the specific weight by the weight of 1 cubic foot of water which is 62.4lbs. Specific weight x 62.4 = 1 cu ft weight. Example: Specific weight = 4.8 - 4.8 * 62.4 = 299lbs per cu ft
3.1416


19. Annealing copper...
Softens it
After cutting
4 1/2'(inch)
Down Stream


20. If the architectural scale is 1/4'(inch) equals 1 foot - the ratio would be...
1728
Increase
200 lbs
1:48 - because 1/4 of an inch is 1/48th of a foot


21. Which of the following methods of access to a scaffold is prohibited?
1.5
Climbing the cross braces.
Notify response team and allow them to rescue.
6 5/8'(inch)


22. When is it safe to remove the old packing from a valve that is under pressure?
1728
The temperature that the joints are made - the flux and temperatures of the system
Bumping
NEVER!


23. What causes water to move in a Hydronic system?
The Evaporator
Raise the load
Condensate pump size
The pump creates a differential in pressure that moves the water.


24. The best knot to use when lifting pipe vertically is the...
100% of the rated capacity
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)
Clove hitch with a half hitch
The tubing has been cleaned for oxygen service


25. Which way should the bevel face on an orifice plate?
Down Stream
the core
Green
30 Degrees


26. A __________ displacement pump discharges a definite quantity of liquid for each cycle.
the core
Waterlogged
Positive
2 and 1


27. What should be done first when preparing a copper joint?
Fuel - Heat - Oxygen
14.7 psia
Thermostatic - Thermodynamic and Mechanical
Clean all surfaces


28. Ladders with visible defects - such as broken rungs - cracked side rails - or broken steps must be...
Remove the packing
Tagged and removed from service.
Arrange a wire rope clamp so that the dead end has the U bolts
Not to scale - does not show locations of equipment. It shows pipe size and flow.


29. One pound of water pressure is equal to...
OD
.075lbs
62.4
2.31ft


30. When should you ream the end of a pipe?
Center of the pipe
Mechanical return is used.
BCuP - Stands for Brazed Copper Phosphorus
After cutting


31. You should never blow your clothes off with oxygen because oxygen is a/an
The stud bolt is stronger than a machine bolt of the same size and material.
supporter of combustion
Type K
75 degrees - also 4 to 1


32. When a cranes signaler's hand is pointed up with his finger moving in a circle it means to...
In the hot water heating pumps discharge piping.
Raise the load
lower hook
4 1/2'(inch)


33. What is the minimum safe clearance between cranes and energized power lines operating at 50kV or below?
piping
10 feet
Hydrostatic
Red.. think M&M is RED


34. OD for 5'(inch)

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35. The specific weight of mercury is...
Positive
Expansion loop.
near the middle of the jaws
.0361


36. What is typically a final control element?
Valve
Beam clamp
25 feet
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)


37. An up-feed steam heating system has the heating units...
Body belts
Above the main
1.25'(inch)
In the hot water heating pumps discharge piping.


38. Factors in considering the site selection for a new cooling tower.
Prevailing wind speed and direction - environmental concerns - zoning requirements
A pry bar
Beam clamp
Positive


39. The face to center measurement of any welded angle fitting equals...
Alloying
tangent 1/2 angle x radius
Its cheaper!
212 degrees F


40. The leading cause of on-the-job deaths in the construction industry is _______________.
Sch 80 Steel pipe
falls
MAPP - acetylene - and propane
ALWAYS


41. One cubic foot of water weighs?
62.4 pounds
Point thumb up
When a large volume of condensate is generated
tangent 1/2 angle x radius


42. To order a reducing tee you should specify the size by...
Large end to smaller end to center(bull)
Steam
Snubber
Insufficient condensate drainage


43. OD for 1'(inch)

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44. To stop all crane movement the ______ signal should be used.
pi * radius squared
Dog Everything
Sensor
Thermostatic - Thermodynamic and Mechanical


45. The pressure exerted by a liquid at rest is...
Conduction - convection and radiant.
.7854 x D squared
Expansion loop.
Hydrostatic


46. Which of the following types of copper tube has the smallest wall thickness?
Vaporization
1:48 - because 1/4 of an inch is 1/48th of a foot
DWV
Eccentric reducer (flat on top)


47. OD for 8'(inch)

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48. Which rigging configuration has the greatest sling strength?
Basket
Steam
Mechanical/Thermostatic
Flooded


49. A device that mechanically attaches to the side of a flange on a beam is called a...
Beam clamp
Air Bound
5 9/16'(inch)
radius squared times PI


50. What is the formula to figure the area of a circle?
Center of the pipe
Segmental
radius squared times PI
DWV