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Plumbing Certification

Instructions:

Answer 50 questions in 15 minutes.
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Match each statement with the correct term.
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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. What is the purpose for a weep hole in a saddle pad?
Steam
Allow moisture to escape
Solder joints
3 to 15 psi

2. What does a + plus sign mean?
Pressure rating
The Evaporator
The impeller
Pipe penetration

3. What is the welding position 3 - on the electrode mean?
.135 cu ft
Flat position only
bowline on a bight
Conduction - convection and radiant.

4. Standard atmospheric pressure at sea level is _____...
200 lbs
14.7 psia
15 Feet
Raise the load

5. In one cubic foot there are _________ cubic inches.
Dog Everything
galvanized
1728
Hydraulics

6. What is Hydronics?
Pipe penetration
15 Feet
OD
The science of heat transfer using water.

7. What does the G stand for in the 2G - 5G and 6G weld positions?
The flux burns and the joint becomes ineffective
Groove
Bumping
Spiral Wound

8. What effect does the fill pressure (static) have on a closed loop plumbing system?
None
The flux is in the filler material
.01745 - 3.1416 - and .7854
soft tempered

9. Soldered joints should never be used on systems above...
true isometric
All the way to the shoulder
1.5
250 degrees

10. The only entity that has the responsibility and authority to appoint the competent person is...
Sch 40
3 1/2'(inch)
Red.. think M&M is RED
the employer

11. The color code for ACR copper is...
15 Feet
Discharge
.433psi
Crimson... think aCRimson

12. Name the three methods of transferring heat.
1728
Cavitation
The pump creates a differential in pressure that moves the water.
Conduction - convection and radiant.

13. What is typically a final control element?
1 5/16'(inch)
Valve
Hazard prevention and control.
Fusion

14. A _______________ reamer should NOT be used with power operated pipe threading equipment
blow the valves for a moment
Choked position
Spiral
8 5/8'(inch)

15. 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...
true isometric
Snubber
Capillary action
To protect the threads from rust.

16. What are the main differences between soldering and brazing?
Ground Fault Circuit Interrupter
9
The temperature that the joints are made - the flux and temperatures of the system
an eccentric reducer flat on top

17. Which of the following is the decimal equivalent of 5/8'(inch)
.625
radius squared times PI
Segmental
After cutting

18. When gripping a pipe with a pipe wrench - the wrench should be adjusted so the pipe is...
Choked position
Segmental
near the middle of the jaws
2 and 1

19. A tag line should be used on a crane lift...
Coating
100% of the rated capacity
ALWAYS
Dog Everything

20. When leaning a ladder against an object - the ladder should be at an approximate angle of __________ degrees.
75 degrees - also 4 to 1
Loosen the far bolts first
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)
1 5/16'(inch)

21. What has the largest effect on pump alignment?
14.7psia - always in PSI-A
Pipe strain
Green... think KKelly GREEN
Eccentric reducers - flat on top

22. When a cranes signaler's hand is pointed up with his finger moving in a circle it means to...
take-off must be subtracted from the end-to-center measurement.
Raise the load
Controller
25' from any worker

23. In the cooling cycle - which component throttles the flow of refrigerant?
Expansion Device
Act as a safety device to shut off the motor if the operator's foot is removed from the switch.
Pressure Rating
compression

24. 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.
840
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.
Dry expansion type
Too fast of a travel rate

25. What is the standard for an electronic signal?
4 to 20 milliamps
5 9/16'(inch)
Center of the pipe
Guide - Anchor - Guide

26. The pipe fitting that makes a 180 degree turn is called a/an?
1
an eccentric reducer flat on top
Increase in friction
return fitting

27. The sum of atmospheric and gauge pressure is known as __________ pressure.
Valve
All the way to the shoulder
75 degrees - also 4 to 1
Absolute

28. Why is it necessary to use flux on a soldered joint?
piping
To chemically prepare the pieces for soldering
protect worker safety and health
4 to 20 milliamps

29. A float and thermostatic trap is a...
Valve
ALWAYS
NEVER!
Mechanical/Thermostatic

30. A vent is not needed on a condensate receiver when...
Softener
Green... think KKelly GREEN
Sch 80 Steel pipe
Mechanical return is used.

31. A rating of 300# refers to a flange's...
Globe valve
Pressure Rating
no valves permitted
Pneumatics

32. What is the purpose of the expansion joint in a steam system?
To provide movement cause from a change in temperature
sewage
supporter of combustion
falls

33. The type of drawing that most closely resembles an object as the eye would see it is referred to as a/an __________ drawing.
near the middle of the jaws
Pneumatics
true isometric
Dog Everything

34. The specific gravity of a gas is relative to the specific weight of _______________ - which has a specific gravity of one.
Air
2 and 1
Point at the base and sweep the base with the extinguisher
Climbing the cross braces.

35. What type of copper is recommended for refrigeration?
Anchors
Axis of pipe should be on a 45 degree
8.33 pounds
Type K

36. Oil is used on a pipe machine to...
.491lbs
cool and lubricate the die
take-off must be subtracted from the end-to-center measurement.
.707 x Travel

37. A neutral reading on the PH scale is...
7.0
100% of the rated capacity
.01745 - 3.1416 - and .7854
Schedule 10

38. OD for 3'(inch)

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39. A diamond on an instrumentation loop diagram encloses information concerning...
14.7psia - always in PSI-A
Set point
Snubber
Never

40. A dielectric fitting should be used on...
set point
steel to copper joints
hydrometer
Expansion Device

41. The color code for DWV copper is...
On high side of the system and turns gas to liquid.
2 3/8'(inch)
Insert pipe into fitting and turn 1/4 turn and hold
Yellow.. think Dee Double U is yelloWWW

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

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43. Where should the pressure enter a globe valve?
Before the strainer and fully open.
The science of heat transfer using water.
Depends on the desired action if the disc or plug becomes detatched from the stem. (Fail open or Fail closed)
steel to copper joints

44. When should a person designated as an attendant attempt to rescue a worker that is trapped?
The science of heat transfer using water.
Strainer
Tagged and removed from service.
Never

45. To determine the travel for a 45 degree rolling offset you would...
Multiply the length of the hypotenuse of the roll and the set by 1.414
75 degrees - also 4 to 1
15 PSI
the type of coating and current

46. Which of the elements of a wire rope aid in absorbing '(inch)Shock Loads'(inch)?
the core
Loosen the far bolts first
Snubber
Air

47. In a Hydronic heating system - units at the top of the system not heating are likely to be...
Condensate pump size
compression
Coating
Air Bound

48. The leading cause of on-the-job deaths in the construction industry is _______________.
pi * radius squared
6 5/8'(inch)
falls
3 to 15 psi

49. The 6G welding position is...
With the weld at a 45 degree angle
Erratic readings
Hydrostatics
The stud bolt is stronger than a machine bolt of the same size and material.

50. Which of the following is NOT a reason for using cutting oil when threading pipe?
Not to scale - does not show locations of equipment. It shows pipe size and flow.
13/16'(inch)
To protect the threads from rust.
MAPP - acetylene - and propane

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Plumbing Certification

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