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 6G welding position is...
Flash Tank
Water
With the weld at a 45 degree angle
Spring hanger

2. Guides are used near...
1 5/16'(inch)
Anchors
Not to scale - does not show locations of equipment. It shows pipe size and flow.
Hydrostatics

3. In one cubic foot there are _________ cubic inches.
1 5/16'(inch)
Sch 40
1728
75 degrees - also 4 to 1

4. What do the first two digits mean in E7018 electrodes?
the employer
Latent
The tensile strength of the rod in PSI times 1 -000
Alloying

5. Formula for a cubic foot of an unknown substances weight?
Large volumes of condensate flash back to liquid in the tank so it removes trapped steam from the condensate.
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
15 Feet
The impeller

6. Name the three methods of transferring heat.
7.0
Conduction - convection and radiant.
The flux is in the filler material
Pipe strain

7. A single line drawing of a piping system represents the...
The flow of a liquid into a small space
Center of the pipe
Too fast of a travel rate
The flux is in the filler material

8. Which of the following is sometimes used as a shielding gas in the GTAW process?
Argon
1 5/16'(inch)
Cavitation
Fuse

9. What type of copper tubing joint requires use of a ferrule?
1
compression
Snubber
Hydraulics

10. Factors in considering the site selection for a new cooling tower.
Anchors
Yellow.. think Dee Double U is yelloWWW
Down Stream
Prevailing wind speed and direction - environmental concerns - zoning requirements

11. The color code for DWV copper is...
Sensor
14'(inch)
Yellow.. think Dee Double U is yelloWWW
Choked position

12. How much does 1 cubic foot of air weigh?
1 foot
4 1/2'(inch)
When a large volume of condensate is generated
.075lbs

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

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14. What is on the low side of the vapor compression cycle?
Ammonia
62.4lbs
Its cheaper!
The Evaporator

15. How much heat is required to raise 1/2 pound of water 1 degree F?
Expansion Device
1/2 BTU
Waterlogged
handle will bend

16. The treatment of liquids in motion is known as...
the type of coating and current
1728
Hydraulics
Remote bulb

17. When ordering ACR copper specify the size by...
OD
Magnesium
NEVER!
Bight - running end and standing part

18. In a Hydronic heating system - units at the top of the system not heating are likely to be...
1 foot
BCuP - Stands for Brazed Copper Phosphorus
Air Bound
OD

19. What does a + plus sign mean?
Pipe penetration
15 PSI
Absolute
7.48

20. A tag line should be used on a crane lift...
Expansion Device
Spring hanger
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)
ALWAYS

21. The sum of atmospheric and gauge pressure is known as __________ pressure.
Point at the base and sweep the base with the extinguisher
1.5
The temperature that the joints are made - the flux and temperatures of the system
Absolute

22. Which one of the following measures and takes action?
Eccentric reducer (flat on top)
To reduce the pressure from the cylinders to safe and workable pressures
Controller
Notify response team and allow them to rescue.

23. What is the weakest part of a chain hoist?
All position
lower hook
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)
Allow moisture to escape

24. To raise the boom of a crane you would...
None
take-off must be subtracted from the end-to-center measurement.
Point thumb up
Primer

25. A system which the refrigerant is in the shell and cools the fluid in the tubes is...
Controller
Fusion
Point at the base and sweep the base with the extinguisher
Flooded

26. Which of the following is an essential element necessary to produce an ordinary fire?
Fuel - Heat - Oxygen
protect worker safety and health
foot valve
840

27. Which of the following constants are used when working with circles and areas?
Remove the packing
.01745 - 3.1416 - and .7854
an eccentric reducer flat on top
Never

28. Soldered joints should never be used on systems above...
250 degrees
Tagged and removed from service.
A pry bar
.625

29. An oil separator is required on systems using...
steel to copper joints
62.4
Ammonia
maximum rated capacity

30. What does the stamp Oxy-Med stand for on copper tubing?
Yellow.. think Dee Double U is yelloWWW
14.7 psia
The tubing has been cleaned for oxygen service
Allow moisture to escape

31. One foot of water exerts...
100% of the rated capacity
Beam clamp
When a large volume of condensate is generated
.433psi

32. One gallon of water weighs?
25' from any worker
8.33 pounds
Conduction - convection and radiant.
Center of the pipe

33. Which of the following types of copper tube has the smallest wall thickness?
1/2 BTU
zinc
DWV
After cutting

34. To figure the end-to-end measurement of a piece of pipe when the end-to-end center measurement is known the...
Pipe strain
return fitting
take-off must be subtracted from the end-to-center measurement.
BUT

35. Which type of orifice plate is designed to measure flow of liquids containing solids?
Segmental
Increase
Strainer
.433psi

36. What is the standard for an electronic signal?
36'(inch)
4 to 20 milliamps
Remote bulb
Snubber

37. When a loop is needed at any point between ends of a rope - the proper knot to tie is the...
bowline on a bight
Clove hitch with a half hitch
2.31ft
13/16'(inch)

38. In the cooling cycle - which component throttles the flow of refrigerant?
Expansion Device
Remove the packing
Up and Down
The stud bolt is stronger than a machine bolt of the same size and material.

39. Calculate head pressure of a vertical pipe at specific elevations.
Primer
Valve
Type K
(Total Height - Elevation) * .433 = psig

40. What is the welding position 2 - on the electrode mean?
36'(inch)
The flow of a liquid into a small space
Remote bulb
Flat and horizontal positions

41. An abrasive wheel should never run faster than it...
maximum rated capacity
.7854 x D squared
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)
Argon

42. The color code for type '(inch)K'(inch) copper is?
hydrometer
Equalizing line
14'(inch)
Green

43. The specific weight of air and water is...
15 PSI
Softens it
1
Forced convection - because the FAN forces convection!

44. Which of the following has the largest inside diameter?
pi * radius squared
180
Not to scale - does not show locations of equipment. It shows pipe size and flow.
Schedule 10

45. One pound of water pressure is equal to...
2.31ft
Conduction - convection and radiant.
Increase
Ammonia

46. What is the function of the covering on the electrodes during the process of '(inch)Shielded Metal Arc Welding'(inch)?
Provide oxygen barrier - stabilize and direct the force of the arc and to gather impurities in the form of slag.
36'(inch)
To chemically prepare the pieces for soldering
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)

47. A schematic drawing is...
Increase
840
Not to scale - does not show locations of equipment. It shows pipe size and flow.
Pipe penetration

48. A rating of 150# refers to a flange's...
Pressure rating
Latent
8.33lbs
Positive

49. The color code for type L copper is...
Blue... think b-LLLLue
Never
9
Clean all surfaces

50. What is the maximum pressure for an acetylene hose?
Discharge
steam and condensate flowing in the same direction
15 PSI
36'(inch)