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...
To allow for thermal movement
Capillary action
Center of the pipe
Ball joint - Bellows Joint and Packed Joint

2. When gripping a pipe with a pipe wrench - the wrench should be adjusted so the pipe is...
Red.. think M&M is RED
Green
Provide oxygen barrier - stabilize and direct the force of the arc and to gather impurities in the form of slag.
near the middle of the jaws

3. Where is a bourdon tube found?
.7854 x D squared
In a pressure gauge
BUT
dry expansion

4. What are the three rope parts used in tying knots and hitches?
The same OD as the branch
Mechanical/Thermostatic
dry expansion
Bight - running end and standing part

5. OD for 1'(inch)

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6. In a typical residential air conditioning system - the evaporator is of the _______________ type - where the liquid refrigerant should be totally vaporized before it reaches the outlet of the evaporator.
3.1416
Dry expansion type
Clean all surfaces
near the middle of the jaws

7. To figure the end-to-end measurement of a piece of pipe when the end-to-end center measurement is known the...
Type K
62.4
take-off must be subtracted from the end-to-center measurement.
30 Degrees

8. Which one of the following measures and takes action?
(Total Height - Elevation) * .433 = psig
The flux burns and the joint becomes ineffective
Insert pipe into fitting and turn 1/4 turn and hold
Controller

9. What type of Copper tubing is not identified by color on the tubing itself?
soft tempered
Point at the base and sweep the base with the extinguisher
Insert pipe into fitting and turn 1/4 turn and hold
The science of heat transfer using water.

10. What has the largest effect on pump alignment?
soft tempered
Flooded
Pipe strain
1.5

11. The face to center measurement of any welded angle fitting equals...
840
maximum rated capacity
Pipe strain
tangent 1/2 angle x radius

12. The sum of atmospheric and gauge pressure is known as __________ pressure.
Spring hanger
Sch 80 Steel pipe
Schedule 10
Absolute

13. The last digit on a welding electrode refers to the __________ of the electrode.
the core
36'(inch)
Coating
orthographic

14. The letters MSDS stand for...
Remove any paint or rust.
Material Safety Data Sheet
2.31ft
Notify response team and allow them to rescue.

15. Capillary action is used in...
Solder joints
Spring hanger
On low side of the system and expands liquid to low pressure gas.
Arrange a wire rope clamp so that the dead end has the U bolts

16. The pressure exerted by a liquid at rest is...
Hydrostatic
Before the strainer and fully open.
cool and lubricate the die
Bumping

17. The pipe size of a pipe changes from the ID to the OD on what pipe size?

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18. The combining of more than one metal is...
250 degrees
Quarter
Alloying
.491lbs

19. A concentric reducer could be used to connect to a horizontal pump _______________ line.
62.4 pounds
The tubing has been cleaned for oxygen service
Pressuretrol
Discharge

20. What is the welding position 2 - on the electrode mean?
Flat and horizontal positions
Vaporization
The pump creates a differential in pressure that moves the water.
Magnesium

21. An up-feed steam heating system has the heating units...
Tagged and removed from service.
Snubber
13/16'(inch)
Above the main

22. A vent is not needed on a condensate receiver when...
Insure progressively tighter fit
Mechanical return is used.
Above the main
Equalizing line

23. When should a person designated as an attendant attempt to rescue a worker that is trapped?
Conduction - convection and radiant.
zinc
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)
Never

24. How often should the atmosphere be tested in a confined space?
.707 x Travel
.01745 - 3.1416 - and .7854
Anchors
Continuously

25. When should you ream the end of a pipe?
After cutting
Neutral
Sch 40
Loosen the far bolts first

26. What should be done first when preparing a copper joint?
Clean all surfaces
The stud bolt is stronger than a machine bolt of the same size and material.
falls
Crimson... think aCRimson

27. On a centrifugal pump what is rotated by the motor?
blow the valves for a moment
1.5
The impeller
Allow moisture to escape

28. The density of 1 cubic inch of Mercury is...
steel to copper joints
8.33lbs
.491lbs
The tensile strength of the rod in PSI times 1 -000

29. Condensate lines should be pitched...
Forced convection - because the FAN forces convection!
Schedule 10
Too fast of a travel rate
In the direction of flow

30. A Hartford loop is used for...
The tubing has been cleaned for oxygen service
Globe valve
Protection for loss of water in the boiler.
Blue... think b-LLLLue

31. How much does 1 cubic foot of air weigh?
On low side of the system and expands liquid to low pressure gas.
Air Bound
.075lbs
Red.. think M&M is RED

32. When brazing for medical gas or refrigeration always...
Softener
6 5/8'(inch)
Purge the line when brazing
Insert pipe into fitting and turn 1/4 turn and hold

33. OD for 8'(inch)

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34. Which component in a closed control loop is the primary element?
OD
Sensor
Ball joint - Bellows Joint and Packed Joint
Neutral

35. What is the purpose for a weep hole in a saddle pad?
Allow moisture to escape
62.4
.491lbs
Strainer

36. What does GFCI stand for?
Ground Fault Circuit Interrupter
3.1416
Valve
Spiral Wound

37. An abrasive wheel should never run faster than it...
Clean all surfaces
maximum rated capacity
the core
Insure progressively tighter fit

38. Guides are used near...
840
galvanized
Anchors
Saturated

39. What size hole should be cut into a main to saddle ON a smaller pipe?
The same ID as the branch
In a pressure gauge
212 degrees F
7.0

40. OD for 5'(inch)

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41. What does the term '(inch)never saddle a dead horse'(inch) mean?
Red.. think M&M is RED
Arrange a wire rope clamp so that the dead end has the U bolts
62.4lbs
tangent 1/2 angle x radius

42. OSHA was enacted to...
840
protect worker safety and health
A pry bar
Erratic readings

43. What temperature does water boil at sea level?
Basket
212 degrees F
.707 x Travel
lower hook

44. What is the purpose of the expansion joint in a steam system?
On high side of the system and turns gas to liquid.
To provide movement cause from a change in temperature
West of the building
Notify response team and allow them to rescue.

45. To raise the boom of a crane you would...
The temperature that the joints are made - the flux and temperatures of the system
3 to 15 psi
Large volumes of condensate flash back to liquid in the tank so it removes trapped steam from the condensate.
Point thumb up

46. When selecting a hanger for a piping system you should consider...
cool and lubricate the die
The system temperature - thermal and dynamic movement of the pipe and vibration.
The flux burns and the joint becomes ineffective
2 and 1

47. What type of flame should be used to cut carbon steel?
Pipe strain
Neutral
36'(inch)
Continuously

48. Factors in considering the site selection for a new cooling tower.
Large volumes of condensate flash back to liquid in the tank so it removes trapped steam from the condensate.
Flux
Prevailing wind speed and direction - environmental concerns - zoning requirements
Before the strainer and fully open.

49. A mixing valve has ___ inlets and ___ outlets.
2 and 1
On high side of the system and turns gas to liquid.
Expansion Device
ALWAYS

50. Where should the high pressure condensate be piped to before entering the receiver?
take-off must be subtracted from the end-to-center measurement.
Flash Tank
Axis of pipe should be on a 45 degree
Ball joint - Bellows Joint and Packed Joint