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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. When lifting objects with sharp edges you should use a...
Softener
Axis of pipe should be on a 45 degree
Roller hangers
West of the building

2. What has the largest effect on pump alignment?
14'(inch)
Pipe strain
Crimson... think aCRimson
Hydrostatics

3. The specific weight of mercury is...
orthographic
.0361
Too fast of a travel rate
212 degrees F

4. The function of a steam trap is to prevent the flow of ________________ - while allowing condensate and non-condensable gases to pass through.
Argon
Steam
Act as a safety device to shut off the motor if the operator's foot is removed from the switch.
Air

5. The change in state from solid to liquid is known as...
The tensile strength of the rod in PSI times 1 -000
no valves permitted
Fusion
Alloying

6. Which of the following is NOT a reason for using cutting oil when threading pipe?
radius squared times PI
piping
3 1/2'(inch)
To protect the threads from rust.

7. When a liquid changes immediately to a vapor it is called...
Softens it
Sch 40
Flashing
2.31ft

8. OD for 4'(inch)

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9. Which type of orifice plate is designed to measure flow of liquids containing solids?
Dry expansion type
Segmental
On low side of the system and expands liquid to low pressure gas.
Provide oxygen barrier - stabilize and direct the force of the arc and to gather impurities in the form of slag.

10. A _______________ reamer should NOT be used with power operated pipe threading equipment
Spiral
no valves permitted
Multiply the length of the hypotenuse of the roll and the set by 1.414
discharge

11. When brazing for medical gas or refrigeration always...
Immersion sensor
Cavitation
Expansion loop.
Purge the line when brazing

12. Theoretically - a pump can raise water by suction approximately __________ feet vertically.
Guide - Anchor - Guide
A pry bar
Large volumes of condensate flash back to liquid in the tank so it removes trapped steam from the condensate.
34 feet

13. What should be done to prepare a flange for the gasket installation?
Set point
4 times
Remove any paint or rust.
On low side of the system and expands liquid to low pressure gas.

14. What does the crane signal with the index finger pointed forward in a swirling motion signal?
Act as a safety device to shut off the motor if the operator's foot is removed from the switch.
Raise the load
Depends on the desired action if the disc or plug becomes detatched from the stem. (Fail open or Fail closed)
Ball joint - Bellows Joint and Packed Joint

15. What does GFCI stand for?
Argon
Ground Fault Circuit Interrupter
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
Coating

16. If the architectural scale is 1/4'(inch) equals 1 foot - the ratio would be...
Dry expansion type
Remove any paint or rust.
To allow for thermal movement
1:48 - because 1/4 of an inch is 1/48th of a foot

17. The ______ is used to protect the weld puddle from contamination in the SMAW process.
zinc
(Total Height - Elevation) * .433 = psig
Roller hangers
Flux

18. A condensate receiver is used when...
protect worker safety and health
When a large volume of condensate is generated
15 Feet
Raise the load

19. To figure the end-to-end measurement of a piece of pipe when the end-to-end center measurement is known the...
lower hook
Sch 80 Steel pipe
Increase in friction
take-off must be subtracted from the end-to-center measurement.

20. Momentarily closing the starting switch to check the rotation of the pump is known as __________ the pump.
The tubing has been cleaned for oxygen service
galvanized
Pressure rating
Bumping

21. To fabricate a 60 degree elbow from a 90 you would...
Level the 90 in horizontal position determine inside arc - backside arc and face to center dimensions for 60 degree elbow - mark and cut
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.
tangent 1/2 angle x radius
The type of coating and current

22. Guides are used near...
Argon
MAPP - acetylene - and propane
Anchors
cool and lubricate the die

23. Where should the pressure enter a globe valve?
The Evaporator
tangent 1/2 angle x radius
Coating
Depends on the desired action if the disc or plug becomes detatched from the stem. (Fail open or Fail closed)

24. What instrument is best for measuring vacuum?
34 feet
compression
Spring hanger
Manometer

25. A bushing is NOT a good replacement for a reducer because...
Its cheaper!
1
an eccentric reducer flat on top
200 lbs

26. What causes water to move in a Hydronic system?
Coating
Increase the pressure when the temperature increases
Globe valve
The pump creates a differential in pressure that moves the water.

27. If a pump is operating under static suction lift conditions - a __________ may be installed in the suction line to avoid losing the pump's prime each time the pump shuts off.
Eccentric reducers - flat on top
foot valve
protect worker safety and health
Waterlogged

28. Why can flux be omitted in a brazed joint?
Body belts
falls
Never
The flux is in the filler material

29. What type of sensor is directly in the process stream?
Immersion sensor
Eccentric reducer (flat on top)
handle will bend
.491lbs

30. To stop all crane movement the ______ signal should be used.
When a large volume of condensate is generated
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.
sewage
Dog Everything

31. What is the function of the covering on the electrodes during the process of '(inch)Shielded Metal Arc Welding'(inch)?
Pipe strain
Large volumes of condensate flash back to liquid in the tank so it removes trapped steam from the condensate.
Provide oxygen barrier - stabilize and direct the force of the arc and to gather impurities in the form of slag.
Hydrostatics

32. Which of the following is a key element of a comprehensive safety and health program?
Ball joint - Bellows Joint and Packed Joint
Hazard prevention and control.
Prevailing wind speed and direction - environmental concerns - zoning requirements
pi * radius squared

33. What is capillary action?
On low side of the system and expands liquid to low pressure gas.
BUT
The flow of a liquid into a small space
Roller hangers

34. What is the welding position 3 - on the electrode mean?
Flat position only
5 9/16'(inch)
200 lbs
ALWAYS

35. Annealing copper...
Softens it
tangent 1/2 angle x radius
7.0
840

36. OD for 3'(inch)

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37. Formula for a cubic foot of an unknown substances weight?
8 5/8'(inch)
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
Climbing the cross braces.

38. Factors in considering the site selection for a new cooling tower.
compression
Large end to smaller end to center(bull)
Level the 90 in horizontal position determine inside arc - backside arc and face to center dimensions for 60 degree elbow - mark and cut
Prevailing wind speed and direction - environmental concerns - zoning requirements

39. A mixing valve has ___ inlets and ___ outlets.
Allow moisture to escape
2 and 1
Steam
14'(inch)

40. What should be done first when preparing a copper joint?
.707
2 3/8'(inch)
Clean all surfaces
Body belts

41. A fan coil uses ______ to distribute heating or cooling to the space.
Forced convection - because the FAN forces convection!
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.
Segmental
The pump creates a differential in pressure that moves the water.

42. The leading cause of on-the-job deaths in the construction industry is _______________.
falls
8.33 pounds
3.1416
Alloying

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

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44. The combining of more than one metal is...
discharge
Alloying
Bumping
2 3/8'(inch)

45. Condensate lines should be pitched...
Strainer
1728
In the direction of flow
ALWAYS

46. What is the weakest part of a chain hoist?
lower hook
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.
The science of heat transfer using water.
Air

47. 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...
4 1/2'(inch)
.7854 x D squared
Capillary action
Sch 80 Steel pipe

48. What does the stamp Oxy-Med stand for on copper tubing?
Notify response team and allow them to rescue.
Waterlogged
The tubing has been cleaned for oxygen service
falls

49. What are the three types of steam traps?
Softener
All the way to the shoulder
Thermostatic - Thermodynamic and Mechanical
None

50. Zinc chills or metal fume fever are caused from welding on __________ steel.
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.
212 degrees F
galvanized
Fusion

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Plumbing Certification

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