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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. The color code for type L copper is...
The same ID as the branch
Discharge
pi * radius squared
Blue... think b-LLLLue

2. An increase in pressure will cause the boiling point of water to ________...
Increase
14.7 psia
Climbing the cross braces.
Hazard prevention and control.

3. Exits from a trench 150' long and 4' deep must be located within how many feet of a worker in the trench?
the type of coating and current
Immersion sensor
25 feet
maximum rated capacity

4. Momentarily closing the starting switch to check the rotation of the pump is known as __________ the pump.
840
Multiply the length of the hypotenuse of the roll and the set by 1.414
Bumping
Tagged and removed from service.

5. What is the main reason for the taper on a pipe thread?
Spiral
Insure progressively tighter fit
Green... think KKelly GREEN
(Total Height - Elevation) * .433 = psig

6. Why can flux be omitted in a brazed joint?
Positive
Guide - Anchor - Guide
Yellow.. think Dee Double U is yelloWWW
The flux is in the filler material

7. What type of hanger uses a spring that splits the rod?
Set point
With the weld at a 45 degree angle
Spring hanger
steel to copper joints

8. Calculate head pressure in a section of vertical pipe?
Raise the load
1728
Height * .433 = psig
Increase in friction

9. A bushing is NOT a good replacement for a reducer because...
Anchors
Its cheaper!
Protection for loss of water in the boiler.
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

10. What is the function of the covering on the electrodes during the process of '(inch)Shielded Metal Arc Welding'(inch)?
Expansion loop.
Provide oxygen barrier - stabilize and direct the force of the arc and to gather impurities in the form of slag.
None
falls

11. How far should a copper tube be inserted into a cup for a brazed joint?
an eccentric reducer flat on top
All the way to the shoulder
Pressure rating
4 times

12. A simple example of a lever is...
Bight - running end and standing part
30 Degrees
no valves permitted
A pry bar

13. The centerline of piping in a horizontal plane on an isometric drawing is most generally drawn at __________ degrees from the horizontal.
In a pressure gauge
30 Degrees
Ball joint - Bellows Joint and Packed Joint
Pressure rating

14. Name the three methods of transferring heat.
After cutting
The temperature that the joints are made - the flux and temperatures of the system
Conduction - convection and radiant.
true isometric

15. Which component in a closed control loop is the primary element?
.433psi
1 foot
Sensor
After cutting

16. What is the sum of all angles in a triangle?
the core
Ammonia
180
100% of the rated capacity

17. What should be done first when preparing a copper joint?
Clean all surfaces
Its cheaper!
Continuously
BCuP - Stands for Brazed Copper Phosphorus

18. All of the following are process control elements EXCEPT...
piping
Allow moisture to escape
7.0
14.7 psia

19. What is used to soften PVC and remove the gloss?
Primer
Act as a safety device to shut off the motor if the operator's foot is removed from the switch.
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)
10 feet

20. What temperature does water boil at sea level?
The system temperature - thermal and dynamic movement of the pipe and vibration.
Conduction - convection and radiant.
212 degrees F
Capillary action

21. The symbol for pi is equivalent to...
3.1416
On low side of the system and expands liquid to low pressure gas.
Discharge
.075lbs

22. A concentric reducer could be used to connect to a horizontal pump _______________ line.
Large volumes of condensate flash back to liquid in the tank so it removes trapped steam from the condensate.
Discharge
true isometric
Green... think KKelly GREEN

23. 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.
Spiral
The tensile strength of the rod in PSI times 1 -000
4 times
Dry expansion type

24. What is the welding position 3 - on the electrode mean?
the core
Flat position only
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)
7.48

25. To assemble a 4 bolt flange...
To provide movement cause from a change in temperature
Notify response team and allow them to rescue.
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.
Primer

26. 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.
Never
62.4
15 Feet

27. 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?
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.
Green
Capillary action
.707

28. In a refrigeration system a condensable gas is...
1 foot
steam and condensate flowing in the same direction
None
Ammonia

29. When should you ream the end of a pipe?
piping
Softens it
62.4
After cutting

30. Which of the following has the largest inside diameter?
Latent
Forced convection - because the FAN forces convection!
Schedule 10
Increase the pressure when the temperature increases

31. The control point adjustment on a receiver is used to change the _______________.
Cavitation
4 to 20 milliamps
set point
On low side of the system and expands liquid to low pressure gas.

32. The pressure exerted by a liquid at rest is...
Two Hole
1/2 BTU
falls
Hydrostatic

33. A __________ displacement pump discharges a definite quantity of liquid for each cycle.
1.5
Positive
Valve
7.48

34. What is the formula to figure take off on a 45 degree elbow?

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35. To raise the boom of a crane you would...
Point thumb up
return fitting
Erratic readings
Pressure Rating

36. One gallon of water occupies how many cubic feet?
maximum rated capacity
.135 cu ft
To protect the threads from rust.
1.5

37. Formula for a cubic foot of an unknown substances weight?
Multiply the length of the hypotenuse of the roll and the set by 1.414
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
7.0
Air

38. The letters MSDS stand for...
3 to 15 psi
Material Safety Data Sheet
2 3/8'(inch)
Up and Down

39. What effect does the fill pressure (static) have on a closed loop plumbing system?
Neutral
None
radius squared times PI
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.

40. Why is it necessary to use roller hangers?
Sch 40
Yellow.. think Dee Double U is yelloWWW
To allow for thermal movement
8.33 pounds

41. The combining of more than one metal is...
Alloying
Cavitation
2 3/8'(inch)
Provide oxygen barrier - stabilize and direct the force of the arc and to gather impurities in the form of slag.

42. The best method to ensure that a plastic joint is made properly - you should...
Loosen the far bolts first
62.4 pounds
Insert pipe into fitting and turn 1/4 turn and hold
To allow for thermal movement

43. The only entity that has the responsibility and authority to appoint the competent person is...
the employer
Expansion loop.
1:48 - because 1/4 of an inch is 1/48th of a foot
Increase the pressure when the temperature increases

44. A rating of 150# refers to a flange's...
Hydrostatics
Controller
Pressure rating
5 9/16'(inch)

45. Which of the following methods of access to a scaffold is prohibited?
Climbing the cross braces.
Green
handle will bend
Axis of pipe should be on a 45 degree

46. Which way should the bevel face on an orifice plate?
Down Stream
4 to 20 milliamps
Allow moisture to escape
blow the valves for a moment

47. In a Hydronic heating system - units at the top of the system not heating are likely to be...
Valve
14.7psia - always in PSI-A
Air Bound
The system temperature - thermal and dynamic movement of the pipe and vibration.

48. On a centrifugal pump what is rotated by the motor?
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
The impeller
Tagged and removed from service.
Anchors

49. What do the first two digits mean in E7018 electrodes?
The tensile strength of the rod in PSI times 1 -000
The impeller
Flash Tank
4 to 20 milliamps

50. A valve on the suction side of the pump should be...
Valve
Before the strainer and fully open.
212 degrees F
Primer