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. When lifting objects with sharp edges you should use a...
10 feet
Never
Softener
the core

2. When a flux joint is overheated it will not...
Flux
Body belts
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.
Fuse

3. What causes water hammer?
Insufficient condensate drainage
15 Feet
Flashing
Height * .433 = psig

4. Where should the high pressure condensate be piped to before entering the receiver?
Protection for loss of water in the boiler.
840
Height * .433 = psig
Flash Tank

5. The weight of 1 cubic foot of water is...
62.4lbs
Globe valve
Material Safety Data Sheet
sewage

6. The pipe fitting that makes a 180 degree turn is called a/an?
Increase the pressure when the temperature increases
Insufficient condensate drainage
Latent
return fitting

7. All of the following are process control elements EXCEPT...
Flooded
piping
Prevailing wind speed and direction - environmental concerns - zoning requirements
30 Degrees

8. A bushing is NOT a good replacement for a reducer because...
Valve
lower hook
Its cheaper!
To protect the threads from rust.

9. The control point adjustment on a receiver is used to change the _______________.
set point
On high side of the system and turns gas to liquid.
Clean all surfaces
34 feet

10. The density of 1 cubic inch of Mercury is...
1728
.491lbs
Waterlogged
Prevailing wind speed and direction - environmental concerns - zoning requirements

11. A concentric reducer could be used to connect to a horizontal pump _______________ line.
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
Loosen the far bolts first
discharge
15 PSI

12. If the travel of a 45 degree offset is known - what formula can be used to find the advance?
Air Bound
Point thumb up
.707 x Travel
handle will bend

13. When arranging weld coupons for testing position 6G...
Sensor
OD
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
Axis of pipe should be on a 45 degree

14. When a pipe size is decreased by half - the carrying capacity of the pipe decreases by...
Backflow preventer
.135 cu ft
Clove hitch with a half hitch
Quarter

15. OD for 3'(inch)

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16. .433 psig is equal to how high of a water column?
1 foot
Backflow preventer
Flashing
Clean all surfaces

17. What is used to soften PVC and remove the gloss?
Condensate pump size
The flow of a liquid into a small space
Ground Fault Circuit Interrupter
Primer

18. How many 2'(inch) pipes can be supplied from a 6'(inch) header?
Green... think KKelly GREEN
9
set point
an eccentric reducer flat on top

19. Condensate lines should be pitched...
In the direction of flow
no valves permitted
Purge the line when brazing
All position

20. A rating of 300# refers to a flange's...
None
.625
Pressure Rating
The flux is in the filler material

21. When a liquid changes immediately to a vapor it is called...
The tensile strength of the rod in PSI times 1 -000
Flashing
.707 x Travel
Positive

22. The color code for ACR copper is...
Axis of pipe should be on a 45 degree
Forced convection - because the FAN forces convection!
Insufficient condensate drainage
Crimson... think aCRimson

23. A thermostatic steam trap that fails in the closed position would cause a heating unit to become...
.625
Waterlogged
steam and condensate flowing in the same direction
Ball joint - Bellows Joint and Packed Joint

24. The pressure exerted by a liquid at rest is...
Pipe penetration
Argon
Hydrostatic
Spiral

25. A vertical line in an isometric drawing represents...
Before the strainer and fully open.
Red.. think M&M is RED
Level the 90 in horizontal position determine inside arc - backside arc and face to center dimensions for 60 degree elbow - mark and cut
Up and Down

26. If the architectural scale is 1/4'(inch) equals 1 foot - the ratio would be...
62.4lbs
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.
Green
1:48 - because 1/4 of an inch is 1/48th of a foot

27. A valve on the suction side of the pump should be...
foot valve
Prevailing wind speed and direction - environmental concerns - zoning requirements
Mechanical return is used.
Before the strainer and fully open.

28. 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?
Flooded
BUT
Strainer
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.

29. What type of Copper tubing is not identified by color on the tubing itself?
soft tempered
Air Bound
Remove any paint or rust.
.707

30. Use of air as a power source is known as...
In the hot water heating pumps discharge piping.
Pneumatics
Crimson... think aCRimson
4 times

31. To stop all crane movement the ______ signal should be used.
Conduction - convection and radiant.
Dog Everything
The impeller
Snubber

32. What is the purpose for a weep hole in a saddle pad?
Air Bound
Large end to smaller end to center(bull)
Allow moisture to escape
BUT

33. Which of the following is NOT a reason for using cutting oil when threading pipe?
The type of coating and current
DWV
Provide oxygen barrier - stabilize and direct the force of the arc and to gather impurities in the form of slag.
To protect the threads from rust.

34. How far should a copper tube be inserted into a cup for a brazed joint?
Vaporization
9
Discharge
All the way to the shoulder

35. The treatment of liquids in motion is known as...
Act as a safety device to shut off the motor if the operator's foot is removed from the switch.
4 1/2'(inch)
The flux is in the filler material
Hydraulics

36. What is the standard for an electronic signal?
4 times
4 to 20 milliamps
Large end to smaller end to center(bull)
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.

37. What occurs in a flash tank?
Large volumes of condensate flash back to liquid in the tank so it removes trapped steam from the condensate.
OD
.491lbs
the type of coating and current

38. OD for 1'(inch)

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39. What is the formula to figure the area of a circle?
radius squared times PI
Insert pipe into fitting and turn 1/4 turn and hold
In the hot water heating pumps discharge piping.
ALWAYS

40. In the cooling cycle - which component throttles the flow of refrigerant?
Expansion Device
Two Hole
Tagged and removed from service.
Center of the pipe

41. The symbol for pi is equivalent to...
Continuously
compression
3.1416
When a large volume of condensate is generated

42. To determine the travel for a 45 degree rolling offset you would...
Flat and horizontal positions
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
Capillary action
Multiply the length of the hypotenuse of the roll and the set by 1.414

43. What is typically a final control element?
Valve
When a large volume of condensate is generated
1728
Expansion loop.

44. What is the standard pressure range for a pneumatic signal?
compression
3 to 15 psi
To reduce the pressure from the cylinders to safe and workable pressures
The impeller

45. The function of a steam trap is to prevent the flow of ________________ - while allowing condensate and non-condensable gases to pass through.
Prevailing wind speed and direction - environmental concerns - zoning requirements
Down Stream
25' from any worker
Steam

46. What type of copper tubing joint requires use of a ferrule?
Ball joint - Bellows Joint and Packed Joint
falls
lower hook
compression

47. In a Hydronic heating system - units at the top of the system not heating are likely to be...
Green... think KKelly GREEN
Yellow.. think Dee Double U is yelloWWW
Air Bound
Notify response team and allow them to rescue.

48. What should the outside attendant do to rescue a worker who shows physiological effects of exposure in a confined space?
.491lbs
Air
Notify response team and allow them to rescue.
Expansion Device

49. There are __________ gallons in a cubic foot.
MAPP - acetylene - and propane
7.48
Ammonia
Capillary action

50. A sling is weakest in which position?
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)
Choked position
Point at the base and sweep the base with the extinguisher
supporter of combustion