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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. The pipe that connects the steam header to the boiler return connection is the...
Never
Equalizing line
Absolute
To protect the threads from rust.

2. When ordering ACR copper specify the size by...
OD
.075lbs
Remote bulb
West of the building

3. The type of drawing that views a building by looking directly at the front - top and side is referred to as a/an ___________ drawing.
Axis of pipe should be on a 45 degree
orthographic
steel to copper joints
Flooded

4. When a flux joint is overheated it will not...
.433psi
Fuse
Conduction - convection and radiant.
Bumping

5. What is the welding position 2 - on the electrode mean?
Point thumb up
4 1/2'(inch)
Flat and horizontal positions
the type of coating and current

6. What are 3 fuel gases used for heating pipe or tubing?
Backflow preventer
MAPP - acetylene - and propane
Basket
Mechanical return is used.

7. Steam in contact with the water it has been generated from is known as ________________ steam.
Saturated
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)
The temperature that the joints are made - the flux and temperatures of the system
.135 cu ft

8. Exits from a trench 150' long and 4' deep must be located within how many feet of a worker in the trench?
Body belts
36'(inch)
25 feet
Neutral

9. If a horizontal pipe connecting to the suction side of a pump requires a reducer - it should be connected with...
14.7 psia
Forced convection - because the FAN forces convection!
an eccentric reducer flat on top
.625

10. Which of the following is NOT a reason to use stud bolts instead of machine bolts for bolting flanged piping joints?
Alloying
The stud bolt is stronger than a machine bolt of the same size and material.
no valves permitted
14'(inch)

11. OD for 4'(inch)

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12. What are the three types of steam traps?
MAPP - acetylene - and propane
Mechanical/Thermostatic
Flux
Thermostatic - Thermodynamic and Mechanical

13. A rating of 300# refers to a flange's...
tangent 1/2 angle x radius
return fitting
Pressure Rating
.7854 x D squared

14. One atmosphere is equal to...
blow the valves for a moment
250 degrees
Vaporization
14.7psia - always in PSI-A

15. What has the largest effect on pump alignment?
Center of the pipe
Raise the load
Pipe strain
34 feet

16. Ladders with visible defects - such as broken rungs - cracked side rails - or broken steps must be...
2 3/8'(inch)
handle will bend
Vaporization
Tagged and removed from service.

17. To view the west elevation the viewer's perspective is from the...
West of the building
OD
an eccentric reducer flat on top
Softens it

18. Which of the following is NOT acceptable as part of a personal fall arrest system?
4 to 20 milliamps
Flashing
Body belts
8 5/8'(inch)

19. What is the purpose of the oxygen and acetylene regulators?
.433psi
To reduce the pressure from the cylinders to safe and workable pressures
Arrange a wire rope clamp so that the dead end has the U bolts
Equalizing line

20. Annealing copper...
When a large volume of condensate is generated
The flux burns and the joint becomes ineffective
Softens it
8.33lbs

21. The type of drawing that most closely resembles an object as the eye would see it is referred to as a/an __________ drawing.
true isometric
Controller
231
Ammonia

22. Before attaching regulators to an oxygen cylinder...
Above the main
blow the valves for a moment
Water
Never

23. In a Hydronic heating system - units at the top of the system not heating are likely to be...
Air Bound
Point thumb up
take-off must be subtracted from the end-to-center measurement.
maximum rated capacity

24. The amount of heat necessary bring about a change of state from solid to liquid or liquid to gas is known as _______________ heat.
Latent
Flash Tank
ALWAYS
Mechanical return is used.

25. What is the purpose of the expansion joint in a steam system?
pi * radius squared
Dog Everything
To provide movement cause from a change in temperature
Continuously

26. A mixing valve has ___ inlets and ___ outlets.
2 and 1
set point
200 lbs
25 feet

27. What is the standard for an electronic signal?
30 Degrees
the core
4 to 20 milliamps
Discharge

28. How much heat is required to raise 1/2 pound of water 1 degree F?
Insure progressively tighter fit
1/2 BTU
Pressuretrol
ALWAYS

29. Momentarily closing the starting switch to check the rotation of the pump is known as __________ the pump.
hydrometer
Choked position
Snubber
Bumping

30. Steam supply using parallel flow is...
Tagged and removed from service.
Air
steam and condensate flowing in the same direction
75 degrees - also 4 to 1

31. One cubic foot of water weighs?
Pressuretrol
The pump creates a differential in pressure that moves the water.
62.4 pounds
true isometric

32. What temperature does water boil at sea level?
Softener
Argon
Loosen the far bolts first
212 degrees F

33. What should the outside attendant do to rescue a worker who shows physiological effects of exposure in a confined space?
galvanized
Allow moisture to escape
To reduce the pressure from the cylinders to safe and workable pressures
Notify response team and allow them to rescue.

34. Why can flux be omitted in a brazed joint?
Remote bulb
The flux is in the filler material
Point at the base and sweep the base with the extinguisher
the core

35. How often should the atmosphere be tested in a confined space?
Positive
Hydraulics
Continuously
Remote bulb

36. What is typically a final control element?
Erratic readings
Primer
8.33 pounds
Valve

37. What does the stamp Oxy-Med stand for on copper tubing?
Its cheaper!
Argon
4 times
The tubing has been cleaned for oxygen service

38. With a high pressure valve you should never _____ under pressure.
231
Insert pipe into fitting and turn 1/4 turn and hold
Remove the packing
galvanized

39. Which rigging configuration has the greatest sling strength?
Basket
Type K
To provide movement cause from a change in temperature
200 lbs

40. What is on the low side of the vapor compression cycle?
The Evaporator
25' from any worker
Quarter
the employer

41. The last two digits on an E-6010 electrode specify
The type of coating and current
Type K
Flash Tank
Bumping

42. Which of the following is a key element of a comprehensive safety and health program?
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
bowline on a bight
Hazard prevention and control.
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.

43. What is not a requirement to size the steam trap on a heating unit?
Condensate pump size
Too fast of a travel rate
Hydrostatics
Before the strainer and fully open.

44. The pipe fitting that makes a 180 degree turn is called a/an?
return fitting
Pressure Rating
Ammonia
Never

45. Steam condensate lines should use...
62.4
14'(inch)
Sch 80 Steel pipe
Clove hitch with a half hitch

46. When a loop is needed at any point between ends of a rope - the proper knot to tie is the...
Eccentric reducers - flat on top
75 degrees - also 4 to 1
bowline on a bight
1

47. The combining of more than one metal is...
Dog Everything
The same ID as the branch
Alloying
231

48. A Hartford loop is used for...
Guide - Anchor - Guide
Choked position
Flash Tank
Protection for loss of water in the boiler.

49. Which of the elements of a wire rope aid in absorbing '(inch)Shock Loads'(inch)?
Vaporization
All the way to the shoulder
the core
2.31ft

50. Calculate head pressure in a section of vertical pipe?
Sch 40
15 PSI
1 5/16'(inch)
Height * .433 = psig

Can you answer 50 questions in 15 minutes?

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Plumbing Certification

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