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. Both soldered and brazed joints are made by heating a properly prepared joint to the proper temperature and the flowing of a filler metal by means of...
Capillary action
Clean all surfaces
1
Sch 40

2. Annealing copper...
1.5
Softens it
Guide - Anchor - Guide
Equalizing line

3. To assemble a 4 bolt flange...
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.
lower hook
Body belts
Allow moisture to escape

4. One pound of water pressure is equal to...
Flooded
Level the 90 in horizontal position determine inside arc - backside arc and face to center dimensions for 60 degree elbow - mark and cut
bowline on a bight
2.31ft

5. The treatment of liquids in motion is known as...
To protect the threads from rust.
the type of coating and current
Hydraulics
zinc

6. When a soldered joint is overheated...
Mechanical/Thermostatic
The flux burns and the joint becomes ineffective
The type of coating and current
1728

7. What is the standard for an electronic signal?
handle will bend
4 to 20 milliamps
return fitting
4 1/2'(inch)

8. The last two digits on an E-6010 electrode specify...
To reduce the pressure from the cylinders to safe and workable pressures
the type of coating and current
.491lbs
3 to 15 psi

9. The last two digits on an E-6010 electrode specify
orthographic
Flash Tank
Protection for loss of water in the boiler.
The type of coating and current

10. What size hole should be cut into a main to saddle IN a smaller pipe?
34 feet
sewage
The same OD as the branch
Ball joint - Bellows Joint and Packed Joint

11. What are the three rope parts used in tying knots and hitches?
Bight - running end and standing part
Hydrostatics
Hazard prevention and control.
4 times

12. A concentric reducer could be used to connect to a horizontal pump _______________ line.
Raise the load
Clove hitch with a half hitch
Discharge
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

13. What are the main differences between soldering and brazing?
BCuP - Stands for Brazed Copper Phosphorus
steel to copper joints
.01745 - 3.1416 - and .7854
The temperature that the joints are made - the flux and temperatures of the system

14. A float and thermostatic trap is a...
The science of heat transfer using water.
200 lbs
Mechanical/Thermostatic
Pneumatics

15. Which of the following types of clamps are used to dampen a pipe's movement?
Snubber
NEVER!
Height * .433 = psig
Bight - running end and standing part

16. What is the welding position 3 - on the electrode mean?
7.48
The science of heat transfer using water.
Flat position only
Segmental

17. Use of air as a power source is known as...
Blue... think b-LLLLue
The temperature that the joints are made - the flux and temperatures of the system
radius squared times PI
Pneumatics

18. Although the model codes usually say the melting point of a brazing alloy must be at least 1000º F - the technical temperature specified by the Copper Development Association and the American Welding Society is __________ degrees Fahrenheit.
Spiral Wound
Globe
Positive
840

19. When ordering ACR copper specify the size by...
Roller hangers
Segmental
Hydrostatic
OD

20. What type of copper is recommended for refrigeration?
To protect the threads from rust.
Type K
Solder joints
The same ID as the branch

21. What causes pressure drop?
Increase in friction
1 foot
.433psi
Flux

22. A schematic drawing is...
2 3/8'(inch)
The tubing has been cleaned for oxygen service
Not to scale - does not show locations of equipment. It shows pipe size and flow.
piping

23. A _______________ reamer should NOT be used with power operated pipe threading equipment
Spiral
4 times
Provide oxygen barrier - stabilize and direct the force of the arc and to gather impurities in the form of slag.
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

24. What is the main reason for the taper on a pipe thread?
Increase the pressure when the temperature increases
Insure progressively tighter fit
Manometer
Material Safety Data Sheet

25. What instrument is best for measuring vacuum?
1 5/16'(inch)
The temperature that the joints are made - the flux and temperatures of the system
Manometer
Erratic readings

26. What occurs in a flash tank?
Argon
A pry bar
Large volumes of condensate flash back to liquid in the tank so it removes trapped steam from the condensate.
Hazard prevention and control.

27. The proper way to extinguish a fire is to...
Flat and horizontal positions
2 3/8'(inch)
Body belts
Point at the base and sweep the base with the extinguisher

28. The smallest nominal size DWV copper tube is...

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29. OD for 4'(inch)

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30. What is the minimum safe clearance between cranes and energized power lines operating at 50kV or below?
Guide - Anchor - Guide
Arrange a wire rope clamp so that the dead end has the U bolts
.707
10 feet

31. What is the formula to figure take off on a 45 degree elbow?

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32. An abrasive wheel should never run faster than it...
piping
Spiral Wound
supporter of combustion
maximum rated capacity

33. The type of drawing that most closely resembles an object as the eye would see it is referred to as a/an __________ drawing.
true isometric
Hydraulics
near the middle of the jaws
Continuously

34. When gripping a pipe with a pipe wrench - the wrench should be adjusted so the pipe is...
the core
Act as a safety device to shut off the motor if the operator's foot is removed from the switch.
near the middle of the jaws
Pneumatics

35. What is capillary action?
Height * .433 = psig
The flow of a liquid into a small space
Mechanical return is used.
Point thumb up

36. What is the minimum thickness for threading PVC pipe?
4 to 20 milliamps
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
After cutting
Sch 40

37. What type of flame should be used to cut carbon steel?
Controller
pi * radius squared
To chemically prepare the pieces for soldering
Neutral

38. When leaning a ladder against an object - the ladder should be at an approximate angle of __________ degrees.
75 degrees - also 4 to 1
15 Feet
Red.. think M&M is RED
Material Safety Data Sheet

39. A single line drawing of a piping system represents the...
Point at the base and sweep the base with the extinguisher
Increase the pressure when the temperature increases
Eccentric reducers - flat on top
Center of the pipe

40. The function of a steam trap is to prevent the flow of ________________ - while allowing condensate and non-condensable gases to pass through.
10 feet
1.25'(inch)
A pry bar
Steam

41. Horizontal steam supply piping should be reduced in size by using...
Eccentric reducer (flat on top)
15 PSI
Manometer
an eccentric reducer flat on top

42. Zinc chills or metal fume fever are caused from welding on __________ steel.
When a large volume of condensate is generated
galvanized
Point at the base and sweep the base with the extinguisher
sewage

43. A triple-duty valve is installed...
In the hot water heating pumps discharge piping.
In the direction of flow
no valves permitted
the core

44. The specific weight of air and water is...
14.7 psia
All position
1
Level the 90 in horizontal position determine inside arc - backside arc and face to center dimensions for 60 degree elbow - mark and cut

45. To determine the set on a 45 degree offset you would multiply the travel by...
Primer
Loosen the far bolts first
blow the valves for a moment
.707

46. What is the maximum pressure for an acetylene hose?
Strainer
orthographic
near the middle of the jaws
15 PSI

47. The best method to ensure that a plastic joint is made properly - you should...
Insure progressively tighter fit
Insert pipe into fitting and turn 1/4 turn and hold
Never
Flux

48. If a horizontal pipe connecting to the suction side of a pump requires a reducer - it should be connected with...
Clove hitch with a half hitch
On high side of the system and turns gas to liquid.
.7854 x D squared
an eccentric reducer flat on top

49. A diamond on an instrumentation loop diagram encloses information concerning...
Set point
75 degrees - also 4 to 1
Remove the packing
Quarter

50. The face to center measurement of any welded angle fitting equals...
tangent 1/2 angle x radius
Pipe penetration
falls
36'(inch)