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 control point adjustment on a receiver is used to change the _______________.
soft tempered
set point
180
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.

2. If a horizontal pipe connecting to the suction side of a pump requires a reducer - it should be connected with...
36'(inch)
Allow moisture to escape
Solder joints
an eccentric reducer flat on top

3. What does the term '(inch)never saddle a dead horse'(inch) mean?
Arrange a wire rope clamp so that the dead end has the U bolts
Controller
Erratic readings
840

4. A single line drawing of a piping system represents the...
14.7psia - always in PSI-A
Center of the pipe
Vaporization
2.31ft

5. The specific weight of air and water is...
Flux
.491lbs
Pneumatics
1

6. What should be done to prepare a flange for the gasket installation?
Raise the load
Air Bound
NEVER!
Remove any paint or rust.

7. The combining of more than one metal is...
Hydrostatic
compression
an eccentric reducer flat on top
Alloying

8. One atmosphere is equal to...
The pump creates a differential in pressure that moves the water.
Purge the line when brazing
14.7psia - always in PSI-A
Strainer

9. The specific gravity of a liquid can only be measured using the following instrument...
hydrometer
1:48 - because 1/4 of an inch is 1/48th of a foot
foot valve
Hydrostatic

10. The best method to ensure that a plastic joint is made properly - you should...
3.1416
After cutting
Insert pipe into fitting and turn 1/4 turn and hold
All position

11. When a pipe size is decreased by half - the carrying capacity of the pipe decreases by...
1
.135 cu ft
Quarter
The same ID as the branch

12. What has the largest effect on pump alignment?
Pipe strain
Axis of pipe should be on a 45 degree
Height * .433 = psig
The tensile strength of the rod in PSI times 1 -000

13. The letters MSDS stand for...
5 9/16'(inch)
Neutral
Material Safety Data Sheet
Latent

14. Which of the following is NOT a reason to use stud bolts instead of machine bolts for bolting flanged piping joints?
The stud bolt is stronger than a machine bolt of the same size and material.
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
2.31ft
34 feet

15. What size hole should be cut into a main to saddle IN a smaller pipe?
Red.. think M&M is RED
near the middle of the jaws
Multiply the length of the hypotenuse of the roll and the set by 1.414
The same OD as the branch

16. When ordering ACR copper specify the size by...
1/2 BTU
Flat and horizontal positions
OD
zinc

17. To determine the set on a 45 degree offset you would multiply the travel by...
maximum rated capacity
Roller hangers
.707
pi * radius squared

18. Zinc chills or metal fume fever are caused from welding on __________ steel.
.7854 x D squared
galvanized
Hazard prevention and control.
When a large volume of condensate is generated

19. Capillary action is used in...
Crimson... think aCRimson
Solder joints
compression
Backflow preventer

20. The 6G welding position is...
Too fast of a travel rate
With the weld at a 45 degree angle
Primer
the employer

21. OD for 1/2'(inch)

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22. When should a person designated as an attendant attempt to rescue a worker that is trapped?
Never
Type K
200 lbs
3 to 15 psi

23. A rating of 150# refers to a flange's...
Pressure rating
Forced convection - because the FAN forces convection!
Segmental
5 9/16'(inch)

24. All of the following are process control elements EXCEPT...
piping
Green... think KKelly GREEN
Cavitation
Flooded

25. A fan coil uses ______ to distribute heating or cooling to the space.
Solder joints
On high side of the system and turns gas to liquid.
Forced convection - because the FAN forces convection!
14.7psia - always in PSI-A

26. Which of the following types of clamps are used to dampen a pipe's movement?
Snubber
The same OD as the branch
8.33lbs
25 feet

27. The specific weight of mercury is...
The system temperature - thermal and dynamic movement of the pipe and vibration.
Fuse
4 1/2'(inch)
.0361

28. What type of copper is recommended for refrigeration?
Bumping
Type K
5 9/16'(inch)
9

29. What is used to soften PVC and remove the gloss?
Primer
Flat and horizontal positions
25 feet
sewage

30. To determine the travel for a 45 degree rolling offset you would...
Schedule 10
Positive
Point at the base and sweep the base with the extinguisher
Multiply the length of the hypotenuse of the roll and the set by 1.414

31. What is the best gasket to use on a flanged joint on medium pressure steam?
Type K
The same ID as the branch
Insufficient condensate drainage
Spiral Wound

32. When arranging weld coupons for testing position 6G...
Axis of pipe should be on a 45 degree
lower hook
180
15 PSI

33. To assemble a 4 bolt flange...
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.
The flow of a liquid into a small space
Absolute
Pipe penetration

34. OD for 3'(inch)

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35. What does the crane signal with the index finger pointed forward in a swirling motion signal?
14'(inch)
Raise the load
maximum rated capacity
180

36. Which of the following constants are used when working with circles and areas?
Type K
To protect the threads from rust.
14.7psia - always in PSI-A
.01745 - 3.1416 - and .7854

37. Which of the following is the decimal equivalent of 5/8'(inch)
.625
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
Green... think KKelly GREEN
Hydrostatic

38. The anode rod used in a hot water heater to protect it from corrosion is made of...
Magnesium
sewage
1
Raise the load

39. The pipe that connects the steam header to the boiler return connection is the...
The flux burns and the joint becomes ineffective
Equalizing line
212 degrees F
BUT

40. On a centrifugal pump what is rotated by the motor?
The system temperature - thermal and dynamic movement of the pipe and vibration.
Vaporization
The impeller
1.25'(inch)

41. What is the main reason for the taper on a pipe thread?
set point
Insure progressively tighter fit
75 degrees - also 4 to 1
Increase the pressure when the temperature increases

42. The last digit on a welding electrode refers to the __________ of the electrode.
Coating
return fitting
Multiply the length of the hypotenuse of the roll and the set by 1.414
MAPP - acetylene - and propane

43. One cubic foot of water weighs?
62.4 pounds
Valve
14.7 psia
4 1/2'(inch)

44. Horizontal steam supply piping should be reduced in size by using...
Eccentric reducer (flat on top)
200 lbs
8.33 pounds
steel to copper joints

45. What is the welding position 1 - on the electrode mean?
Raise the load
Purge the line when brazing
All position
Flash Tank

46. Which component in a closed control loop is the primary element?
return fitting
The tubing has been cleaned for oxygen service
Sensor
Axis of pipe should be on a 45 degree

47. Calculate head pressure in a section of vertical pipe?
Flooded
Height * .433 = psig
8 5/8'(inch)
8.33 pounds

48. You should never blow your clothes off with oxygen because oxygen is a/an
Solder joints
Increase
supporter of combustion
Prevailing wind speed and direction - environmental concerns - zoning requirements

49. The density of water is...
62.4
Flux
Bight - running end and standing part
maximum rated capacity

50. When loosening the bolts on a flange one should...
Loosen the far bolts first
Mechanical/Thermostatic
Insufficient condensate drainage
Schedule 10