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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 a soldered joint is overheated...
To provide movement cause from a change in temperature
Act as a safety device to shut off the motor if the operator's foot is removed from the switch.
Valve
The flux burns and the joint becomes ineffective

2. The change in state from solid to liquid is known as...
Fusion
cool and lubricate the die
Expansion loop.
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)

3. An up-feed steam heating system has the heating units...
On high side of the system and turns gas to liquid.
62.4 pounds
Above the main
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.

4. When a loop is needed at any point between ends of a rope - the proper knot to tie is the...
bowline on a bight
Set point
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
West of the building

5. The amount of heat it takes to raise one pound of water one degree Fahrenheit is known as a...
Raise the load
BUT
The pump creates a differential in pressure that moves the water.
Water

6. Which of the following is an essential element necessary to produce an ordinary fire?
Sensor
Fuel - Heat - Oxygen
Insufficient condensate drainage
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.

7. A valve on the suction side of the pump should be...
Sensor
Before the strainer and fully open.
Never
Level the 90 in horizontal position determine inside arc - backside arc and face to center dimensions for 60 degree elbow - mark and cut

8. What effect does the fill pressure (static) have on a closed loop plumbing system?
.625
None
All position
Basket

9. Momentarily closing the starting switch to check the rotation of the pump is known as __________ the pump.
Bumping
The system temperature - thermal and dynamic movement of the pipe and vibration.
radius squared times PI
75 degrees - also 4 to 1

10. The symbol for pi is equivalent to...
3.1416
To protect the threads from rust.
200 lbs
Center of the pipe

11. The weight of 1 cubic foot of water is...
Segmental
Pressure rating
Cavitation
62.4lbs

12. Which of the following is NOT a reason for using cutting oil when threading pipe?
Backflow preventer
To protect the threads from rust.
.433psi
Solder joints

13. The color code for type L copper is...
Two Hole
Capillary action
Hydrostatic
Blue... think b-LLLLue

14. Which one of the following measures and takes action?
Backflow preventer
Pressuretrol
Controller
Blue... think b-LLLLue

15. How many 2'(inch) pipes can be supplied from a 6'(inch) header?
4 1/2'(inch)
Fusion
9
Point at the base and sweep the base with the extinguisher

16. What is not a requirement to size the steam trap on a heating unit?
Condensate pump size
Saturated
Green
Clean all surfaces

17. In the cooling cycle - which component throttles the flow of refrigerant?
Expansion Device
Dog Everything
Flash Tank
Prevailing wind speed and direction - environmental concerns - zoning requirements

18. What is the sum of all angles in a triangle?
Steam
Cavitation
25 feet
180

19. What type of hanger uses a spring that splits the rod?
Steam
Spring hanger
Dry expansion type
1 5/16'(inch)

20. In a Hydronic heating system - units at the top of the system not heating are likely to be...
Roller hangers
Provide oxygen barrier - stabilize and direct the force of the arc and to gather impurities in the form of slag.
Argon
Air Bound

21. Since _______________ is virtually incompressible - pressure has little effect on its volume.
The flux is in the filler material
Large end to smaller end to center(bull)
Water
Flooded

22. There are __________ cubic inches in a gallon.
231
To reduce the pressure from the cylinders to safe and workable pressures
Prevailing wind speed and direction - environmental concerns - zoning requirements
Blue... think b-LLLLue

23. The 6G welding position is...
Provide oxygen barrier - stabilize and direct the force of the arc and to gather impurities in the form of slag.
Pressuretrol
With the weld at a 45 degree angle
the employer

24. When arranging weld coupons for testing position 6G...
set point
Axis of pipe should be on a 45 degree
231
15 PSI

25. A schematic drawing is...
piping
All the way to the shoulder
Not to scale - does not show locations of equipment. It shows pipe size and flow.
Strainer

26. When a liquid changes immediately to a vapor it is called...
Saturated
Flashing
Increase the pressure when the temperature increases
Remove the packing

27. Why can flux be omitted in a brazed joint?
The flux is in the filler material
The stud bolt is stronger than a machine bolt of the same size and material.
Tagged and removed from service.
The same OD as the branch

28. All of the following are process control elements EXCEPT...
Magnesium
Tagged and removed from service.
Condensate pump size
piping

29. A direct acting thermostat is used to...
Red.. think M&M is RED
Increase the pressure when the temperature increases
pi * radius squared
the core

30. A cooling tower must have a ________ or be open-site.
Green
West of the building
8 5/8'(inch)
Backflow preventer

31. Although the model codes usually say the melting point of a brazing alloy must be at least 1000º F - the technical temperature specified by the Copper Development Association and the American Welding Society is __________ degrees Fahrenheit.
Roller hangers
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.
840
3.1416

32. An exit from a trench should be no more than...

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33. To determine the set on a 45 degree offset you would multiply the travel by...
.707
zinc
Argon
piping

34. A float and thermostatic trap is a...
Solder joints
Down Stream
Mechanical/Thermostatic
Dog Everything

35. With a high pressure valve you should never _____ under pressure.
Fuel - Heat - Oxygen
36'(inch)
Remove the packing
Fuse

36. What is used to soften PVC and remove the gloss?
Spiral Wound
Primer
Fuel - Heat - Oxygen
Vaporization

37. OD for 3'(inch)

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38. The type of drawing that most closely resembles an object as the eye would see it is referred to as a/an __________ drawing.
Body belts
Flooded
true isometric
To allow for thermal movement

39. The change in state from a liquid to gas is known as...
Vaporization
Flooded
true isometric
1.25'(inch)

40. A concentric reducer could be used to connect to a horizontal pump _______________ line.
handle will bend
Discharge
.625
Primer

41. When a pipe size is decreased by half - the carrying capacity of the pipe decreases by...
Down Stream
All the way to the shoulder
Quarter
.075lbs

42. Name the three methods of transferring heat.
Conduction - convection and radiant.
Expansion loop.
Mechanical return is used.
3 to 15 psi

43. What is the purpose of the expansion joint in a steam system?
Pipe penetration
7.48
Set point
To provide movement cause from a change in temperature

44. Ladders with visible defects - such as broken rungs - cracked side rails - or broken steps must be...
Increase the pressure when the temperature increases
Type K
Tagged and removed from service.
Mechanical return is used.

45. If a horizontal pipe connecting to the suction side of a pump requires a reducer - it should be connected with...
Water
MAPP - acetylene - and propane
an eccentric reducer flat on top
On low side of the system and expands liquid to low pressure gas.

46. What are the three types of steam traps?
Thermostatic - Thermodynamic and Mechanical
Air
9
West of the building

47. The pipe that connects the steam header to the boiler return connection is the...
Equalizing line
Conduction - convection and radiant.
In the direction of flow
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.

48. How do you determine gear ratios?

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49. When leaning a ladder against an object - the ladder should be at an approximate angle of __________ degrees.
The flux burns and the joint becomes ineffective
BUT
75 degrees - also 4 to 1
The impeller

50. The color code for type '(inch)K'(inch) copper is?
the core
8.33 pounds
Above the main
Green