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. 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
3.1416
Immersion sensor
The tubing has been cleaned for oxygen service

2. What is the main reason for the taper on a pipe thread?
soft tempered
Absolute
Insure progressively tighter fit
Mechanical/Thermostatic

3. Why can flux be omitted in a brazed joint?
The flux is in the filler material
231
Eccentric reducers - flat on top
Latent

4. 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...
To allow for thermal movement
Ground Fault Circuit Interrupter
Capillary action
Argon

5. OD for 4'(inch)

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6. What type of sensor is directly in the process stream?
Type K
Immersion sensor
Point thumb up
Purge the line when brazing

7. Theoretically - a pump can raise water by suction approximately __________ feet vertically.
34 feet
Capillary action
.433psi
Basket

8. What is the minimum thickness for threading PVC pipe?
The same ID as the branch
Sch 40
Bight - running end and standing part
Saturated

9. What is the standard pressure range for a pneumatic signal?
3 1/2'(inch)
cool and lubricate the die
Flash Tank
3 to 15 psi

10. The color code for DWV copper is...
14.7psia - always in PSI-A
Yellow.. think Dee Double U is yelloWWW
Ammonia
Pipe penetration

11. Capillary action is used in...
Solder joints
tangent 1/2 angle x radius
radius squared times PI
1728

12. OD for 5'(inch)

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13. To view the west elevation the viewer's perspective is from the...
.433psi
take-off must be subtracted from the end-to-center measurement.
Remote bulb
West of the building

14. What type of copper is recommended for refrigeration?
an eccentric reducer flat on top
.625
Type K
Green

15. The specific gravity of a liquid can only be measured using the following instrument...
Insufficient condensate drainage
bowline on a bight
hydrometer
1

16. Standard atmospheric pressure at sea level is _____...
Capillary action
Anchors
.707
14.7 psia

17. What does the G stand for in the 2G - 5G and 6G weld positions?
Groove
.707
Prevailing wind speed and direction - environmental concerns - zoning requirements
14.7psia - always in PSI-A

18. When loosening the bolts on a flange one should...
Purge the line when brazing
Loosen the far bolts first
Quarter
Multiply the length of the hypotenuse of the roll and the set by 1.414

19. The treatment of liquids at rest is known as...
14.7 psia
Hydrostatics
Spiral Wound
Beam clamp

20. An ejector pump is typically used to pump __________.
On high side of the system and turns gas to liquid.
sewage
Roller hangers
Spiral Wound

21. The main cause of undercutting is...
Too fast of a travel rate
Remove any paint or rust.
Ground Fault Circuit Interrupter
Above the main

22. How many 2'(inch) pipes can be supplied from a 6'(inch) header?
9
Controller
Increase the pressure when the temperature increases
100% of the rated capacity

23. When should you ream the end of a pipe?
A pry bar
Schedule 10
Roller hangers
After cutting

24. One foot of water exerts...
Hydraulics
Air
13/16'(inch)
.433psi

25. OD for 6'(inch)

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26. When leaning a ladder against an object - the ladder should be at an approximate angle of __________ degrees.
Crimson... think aCRimson
.7854 x D squared
75 degrees - also 4 to 1
Yellow.. think Dee Double U is yelloWWW

27. Why is it necessary to use roller hangers?
Up and Down
the employer
MAPP - acetylene - and propane
To allow for thermal movement

28. When using a cable come-a-long - what safety device will indicate overloading?
Insure progressively tighter fit
8 5/8'(inch)
Beam clamp
handle will bend

29. The weight of 1 cubic foot of water is...
62.4lbs
an eccentric reducer flat on top
4 to 20 milliamps
Clean all surfaces

30. To raise the boom of a crane you would...
handle will bend
1728
Height * .433 = psig
Point thumb up

31. What has the largest effect on pump alignment?
Pipe strain
DWV
1728
Ammonia

32. A vertical line in an isometric drawing represents...
Up and Down
840
2 and 1
Fuel - Heat - Oxygen

33. Annealing copper...
Too fast of a travel rate
Softens it
Dry expansion type
.433psi

34. When a soldered joint is overheated...
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.
return fitting
BUT
The flux burns and the joint becomes ineffective

35. What is the specific gravity of water?
protect worker safety and health
1
Arrange a wire rope clamp so that the dead end has the U bolts
Discharge

36. One gallon of water weighs?
Pipe penetration
Body belts
8.33 pounds
None

37. A bushing is NOT a good replacement for a reducer because...
Multiply the length of the hypotenuse of the roll and the set by 1.414
Forced convection - because the FAN forces convection!
Its cheaper!
supporter of combustion

38. For an extension ladder to be at the correct angle for safe use on a working surface 20ft high. The ladder must be located how many feet away from the base?
protect worker safety and health
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.
8 5/8'(inch)
180

39. When changing pipe sizes in the horizontal supply or return lines of a two-pipe hot water heating system use...
Sch 80 Steel pipe
Eccentric reducers - flat on top
Air Bound
8.33 pounds

40. Steam condensate lines should be installed on...
Tagged and removed from service.
30 Degrees
Flashing
Roller hangers

41. What is on the low side of the vapor compression cycle?
In the hot water heating pumps discharge piping.
The system temperature - thermal and dynamic movement of the pipe and vibration.
Green... think KKelly GREEN
The Evaporator

42. What do the first two digits mean in E7018 electrodes?
To provide movement cause from a change in temperature
The tensile strength of the rod in PSI times 1 -000
lower hook
Too fast of a travel rate

43. What is the formula to figure the area of a circle?
The type of coating and current
sewage
protect worker safety and health
radius squared times PI

44. The symbol for pi is equivalent to...
Type K
3.1416
Increase in friction
840

45. Formula for a cubic foot of an unknown substances weight?
62.4 pounds
Large volumes of condensate flash back to liquid in the tank so it removes trapped steam from the condensate.
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
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

46. In a piping installation allowing for expansion in two directions - how should the anchor(s) and guide(s) be positioned relative to each other?
The flow of a liquid into a small space
Raise the load
Guide - Anchor - Guide
The stud bolt is stronger than a machine bolt of the same size and material.

47. How much heat is required to raise 1/2 pound of water 1 degree F?
The system temperature - thermal and dynamic movement of the pipe and vibration.
1/2 BTU
Discharge
25' from any worker

48. What are the three rope parts used in tying knots and hitches?
Insure progressively tighter fit
MAPP - acetylene - and propane
Dry expansion type
Bight - running end and standing part

49. What size hole should be cut into a main to saddle ON a smaller pipe?
The same ID as the branch
4 1/2'(inch)
Body belts
The science of heat transfer using water.

50. To stop all crane movement the ______ signal should be used.
Center of the pipe
Dog Everything
1 foot
Waterlogged