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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. What are the three rope parts used in tying knots and hitches?
Bight - running end and standing part
Hazard prevention and control.
62.4
1

2. .433 psig is equal to how high of a water column?
The pump creates a differential in pressure that moves the water.
Insure progressively tighter fit
1 foot
Dry expansion type

3. The color code for type M copper is...
On high side of the system and turns gas to liquid.
With the weld at a 45 degree angle
Red.. think M&M is RED
Mechanical return is used.

4. What is the maximum pressure for an acetylene hose?
14.7psia - always in PSI-A
All position
15 PSI
Axis of pipe should be on a 45 degree

5. What should the outside attendant do to rescue a worker who shows physiological effects of exposure in a confined space?
Notify response team and allow them to rescue.
All position
galvanized
Globe valve

6. Theoretically - a pump can raise water by suction approximately __________ feet vertically.
34 feet
Body belts
.491lbs
Point thumb up

7. Momentarily closing the starting switch to check the rotation of the pump is known as __________ the pump.
Bumping
When a large volume of condensate is generated
Expansion = Constant per 100ft multiplied by (Final Temp- Starting Temp) Example: 380' steel pipe (.0305 constant) is heated from 62 degrees to 171 degrees - how much did the pipe expand? Formula: .0305 * 3.8 (171-62) = 3 5/16'(inch)
steam and condensate flowing in the same direction

8. An oil separator is required on systems using...
14.7 psia
Fuel - Heat - Oxygen
The same OD as the branch
Ammonia

9. What is the minimum safe clearance between cranes and energized power lines operating at 50kV or below?
10 feet
no valves permitted
The flux is in the filler material
840

10. A gallon of water weighs...
8.33lbs
A pry bar
Fuel - Heat - Oxygen
blow the valves for a moment

11. A float and thermostatic trap is a...
Mechanical/Thermostatic
orthographic
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
All the way to the shoulder

12. A vertical line in an isometric drawing represents...
Blue... think b-LLLLue
.433psi
Up and Down
4 to 20 milliamps

13. In the cooling cycle - which component throttles the flow of refrigerant?
Expansion Device
1.25'(inch)
Pipe strain
Insure progressively tighter fit

14. What are the main differences between soldering and brazing?
The temperature that the joints are made - the flux and temperatures of the system
hydrometer
Eccentric reducers - flat on top
bowline on a bight

15. Which type of orifice plate is designed to measure flow of liquids containing solids?
NEVER!
Segmental
Immersion sensor
falls

16. A schematic drawing is...
Not to scale - does not show locations of equipment. It shows pipe size and flow.
Valve
Mechanical/Thermostatic
The stud bolt is stronger than a machine bolt of the same size and material.

17. Where should the pressure enter a globe valve?
Depends on the desired action if the disc or plug becomes detatched from the stem. (Fail open or Fail closed)
75 degrees - also 4 to 1
Crimson... think aCRimson
Pressuretrol

18. The last two digits on an E-6010 electrode specify...
the type of coating and current
Expansion = Constant per 100ft multiplied by (Final Temp- Starting Temp) Example: 380' steel pipe (.0305 constant) is heated from 62 degrees to 171 degrees - how much did the pipe expand? Formula: .0305 * 3.8 (171-62) = 3 5/16'(inch)
pi * radius squared
handle will bend

19. How much does 1 cubic foot of air weigh?
.075lbs
The pump creates a differential in pressure that moves the water.
dry expansion
Loosen the far bolts first

20. A mixing valve has ___ inlets and ___ outlets.
2 and 1
Neutral
Controller
The Evaporator

21. OD for 1'(inch)

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22. If the travel of a 45 degree offset is known - what formula can be used to find the advance?
tangent 1/2 angle x radius
Basket
Water
.707 x Travel

23. 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.
25 feet
Sch 80 Steel pipe
Hydrostatic

24. The color code for ACR copper is...
Crimson... think aCRimson
Hydrostatics
The impeller
Raise the load

25. The main cause of undercutting is...
1
piping
Too fast of a travel rate
Flux

26. OD for 8'(inch)

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27. What does the G stand for in the 2G - 5G and 6G weld positions?
1/2 BTU
Groove
3 to 15 psi
Globe

28. The symbol for pi is equivalent to...
discharge
1
.135 cu ft
3.1416

29. Oil is used on a pipe machine to...
Multiply the length of the hypotenuse of the roll and the set by 1.414
To protect the threads from rust.
cool and lubricate the die
the employer

30. A __________ displacement pump discharges a definite quantity of liquid for each cycle.
The flux burns and the joint becomes ineffective
Solder joints
Clean all surfaces
Positive

31. The change in state from solid to liquid is known as...
Fusion
Segmental
set point
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)

32. When leaning a ladder against an object - the ladder should be at an approximate angle of __________ degrees.
galvanized
75 degrees - also 4 to 1
Immersion sensor
14.7 psia

33. 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.
The temperature that the joints are made - the flux and temperatures of the system
With the weld at a 45 degree angle
1 foot
foot valve

34. What should be done to prepare a flange for the gasket installation?
In a pressure gauge
hydrometer
To reduce the pressure from the cylinders to safe and workable pressures
Remove any paint or rust.

35. OD for 5'(inch)

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36. What type of flame should be used to cut carbon steel?
Latent
Neutral
Expansion Device
the core

37. A diamond on an instrumentation loop diagram encloses information concerning...
62.4 pounds
Raise the load
Set point
.625

38. A dielectric fitting should be used on...
.0361
steel to copper joints
Insure progressively tighter fit
.707

39. To determine the travel for a 45 degree rolling offset you would...
Solder joints
The same ID as the branch
Multiply the length of the hypotenuse of the roll and the set by 1.414
Cavitation

40. What is the formula to calculate thermal expansion?

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41. Which rigging configuration has the greatest sling strength?
Blue... think b-LLLLue
Height * .433 = psig
Basket
.075lbs

42. There are __________ gallons in a cubic foot.
8.33lbs
7.48
Vaporization
7.0

43. A rating of 150# refers to a flange's...
Pressure rating
Climbing the cross braces.
Fusion
Not to scale - does not show locations of equipment. It shows pipe size and flow.

44. In a typical residential air condittioning system - the evaporator is of the _______________ type - where the liquid refrigerant should be totally vaporized before it reaches the outlet of the evaporator.
250 degrees
dry expansion
To protect the threads from rust.
Two Hole

45. When is it safe to remove the old packing from a valve that is under pressure?
1
NEVER!
Backflow preventer
true isometric

46. What is installed after the isolation valve and before the trap union on a standard trap assembly?
Strainer
When a large volume of condensate is generated
Primer
steam and condensate flowing in the same direction

47. The density of 1 cubic inch of Mercury is...
Yellow.. think Dee Double U is yelloWWW
.491lbs
Above the main
Cavitation

48. Which of the following is NOT a reason to use stud bolts instead of machine bolts for bolting flanged piping joints?
25' from any worker
Loosen the far bolts first
All the way to the shoulder
The stud bolt is stronger than a machine bolt of the same size and material.

49. A cooling tower must have a ________ or be open-site.
Expansion loop.
Insert pipe into fitting and turn 1/4 turn and hold
Backflow preventer
10 feet

50. What is capillary action?
The tensile strength of the rod in PSI times 1 -000
.707 x Travel
The flow of a liquid into a small space
Roller hangers