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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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1. What is the formula to calculate thermal expansion?

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2. What is on the low side of the vapor compression cycle?
The science of heat transfer using water.
Neutral
Eccentric reducer (flat on top)
The Evaporator

3. OD for 2'(inch)

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4. OD for 1/2'(inch)

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5. What should the outside attendant do to rescue a worker who shows physiological effects of exposure in a confined space?
Center of the pipe
Hydrostatic
Notify response team and allow them to rescue.
Magnesium

6. A fan coil uses ______ to distribute heating or cooling to the space.
Forced convection - because the FAN forces convection!
BUT
In a pressure gauge
Axis of pipe should be on a 45 degree

7. Which of the following is NOT a reason for using cutting oil when threading pipe?
Pipe strain
.075lbs
The tensile strength of the rod in PSI times 1 -000
To protect the threads from rust.

8. One pound of water pressure is equal to...
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.
take-off must be subtracted from the end-to-center measurement.
2.31ft
Segmental

9. .433 psig is equal to how high of a water column?
DWV
1 foot
62.4
Point at the base and sweep the base with the extinguisher

10. What is the minimum thickness for threading PVC pipe?
Green
Globe
Crimson... think aCRimson
Sch 40

11. The 6G welding position is...
1/2 BTU
With the weld at a 45 degree angle
no valves permitted
Fuse

12. The color code for DWV copper is...
231
Yellow.. think Dee Double U is yelloWWW
Large end to smaller end to center(bull)
Alloying

13. To stop all crane movement the ______ signal should be used.
All position
Increase the pressure when the temperature increases
.625
Dog Everything

14. A condensate receiver is used when...
return fitting
Flat and horizontal positions
When a large volume of condensate is generated
Coating

15. What is the function of the covering on the electrodes during the process of '(inch)Shielded Metal Arc Welding'(inch)?
Provide oxygen barrier - stabilize and direct the force of the arc and to gather impurities in the form of slag.
Hydrostatics
Before the strainer and fully open.
Pressure Rating

16. Which of the following types of clamps are used to dampen a pipe's movement?
BUT
Snubber
Ground Fault Circuit Interrupter
Insure progressively tighter fit

17. If a horizontal pipe connecting to the suction side of a pump requires a reducer - it should be connected with...
Thermostatic - Thermodynamic and Mechanical
Material Safety Data Sheet
an eccentric reducer flat on top
handle will bend

18. Steam supply using parallel flow is...
Globe
steam and condensate flowing in the same direction
100% of the rated capacity
Tagged and removed from service.

19. The color code for type K copper is...
Eccentric reducer (flat on top)
Green... think KKelly GREEN
Loosen the far bolts first
The stud bolt is stronger than a machine bolt of the same size and material.

20. OD for 4'(inch)

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21. The pipe fitting that makes a 180 degree turn is called a/an?
231
return fitting
Increase the pressure when the temperature increases
Fuel - Heat - Oxygen

22. What has the largest effect on pump alignment?
Pipe strain
The same OD as the branch
an eccentric reducer flat on top
Fuse

23. An increase in pressure will cause the boiling point of water to ________...
Increase
Pneumatics
All position
Body belts

24. When arranging weld coupons for testing position 6G...
handle will bend
13/16'(inch)
the employer
Axis of pipe should be on a 45 degree

25. A device that mechanically attaches to the side of a flange on a beam is called a...
Pressure rating
maximum rated capacity
no valves permitted
Beam clamp

26. The face to center measurement of any welded angle fitting equals...
Ground Fault Circuit Interrupter
tangent 1/2 angle x radius
231
To reduce the pressure from the cylinders to safe and workable pressures

27. The color code for type '(inch)K'(inch) copper is?
Forced convection - because the FAN forces convection!
Green
Latent
radius squared times PI

28. What causes pressure drop?
Positive
Increase in friction
14.7psia - always in PSI-A
Eccentric reducers - flat on top

29. What is the welding position 3 - on the electrode mean?
Flat position only
steam and condensate flowing in the same direction
The system temperature - thermal and dynamic movement of the pipe and vibration.
3 to 15 psi

30. What type of hanger uses a spring that splits the rod?
Fuse
Spring hanger
Body belts
Roller hangers

31. The last two digits on an E-6010 electrode specify
The type of coating and current
Loosen the far bolts first
180
Waterlogged

32. What would be the result of an incorrectly installed orifice plate?
Erratic readings
hydrometer
Never
Raise the load

33. The treatment of liquids at rest is known as...
All the way to the shoulder
Above the main
Hydrostatics
Hazard prevention and control.

34. What does the crane signal with the index finger pointed forward in a swirling motion signal?
Argon
The type of coating and current
pi * radius squared
Raise the load

35. The specific weight of mercury is...
Dog Everything
.0361
Cavitation
Valve

36. Why is it necessary to use flux on a soldered joint?
Backflow preventer
1:48 - because 1/4 of an inch is 1/48th of a foot
To chemically prepare the pieces for soldering
1.25'(inch)

37. What does a + plus sign mean?
Provide oxygen barrier - stabilize and direct the force of the arc and to gather impurities in the form of slag.
On high side of the system and turns gas to liquid.
Pipe penetration
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.

38. Which way should the bevel face on an orifice plate?
Green... think KKelly GREEN
return fitting
Down Stream
MAPP - acetylene - and propane

39. What is the best valve for throttling?
Spiral Wound
Globe
.707 x Travel
7.48

40. What is the welding position 1 - on the electrode mean?
All position
In the hot water heating pumps discharge piping.
Snubber
Expansion loop.

41. 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.
62.4
foot valve
The Evaporator
the core

42. The color code for type L copper is...
Set point
Increase in friction
Too fast of a travel rate
Blue... think b-LLLLue

43. Where should the high pressure condensate be piped to before entering the receiver?
30 Degrees
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
Purge the line when brazing
Flash Tank

44. All of the following are process control elements EXCEPT...
piping
To chemically prepare the pieces for soldering
Its cheaper!
true isometric

45. The treatment of liquids in motion is known as...
15 Feet
Raise the load
OD
Hydraulics

46. Steam condensate lines should be installed on...
7.48
Roller hangers
36'(inch)
cool and lubricate the die

47. A vertical line in an isometric drawing represents...
Up and Down
To protect the threads from rust.
return fitting
Arrange a wire rope clamp so that the dead end has the U bolts

48. What type of valve should be used to bypass a control valve?
Globe valve
West of the building
.625
radius squared times PI

49. 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.
Eccentric reducer (flat on top)
Dry expansion type
Ammonia
NEVER!

50. A __________ displacement pump discharges a definite quantity of liquid for each cycle.
Positive
Dry expansion type
In the hot water heating pumps discharge piping.
The flow of a liquid into a small space

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Plumbing Certification

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