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Plumbing Certification

Instructions:

Answer 50 questions in 15 minutes.
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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 is the formula to figure the area of a circle?
25 feet
Height * .433 = psig
radius squared times PI
Arrange a wire rope clamp so that the dead end has the U bolts

2. What is capillary action?
Arrange a wire rope clamp so that the dead end has the U bolts
The flow of a liquid into a small space
The same OD as the branch
lower hook

3. The leading cause of on-the-job deaths in the construction industry is _______________.
sewage
Sensor
falls
piping

4. When a liquid changes immediately to a vapor it is called...
To protect the threads from rust.
Point thumb up
Flashing
1 5/16'(inch)

5. 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.
.7854 x D squared
.433psi
Dry expansion type
piping

6. Formula for a cubic foot of an unknown substances weight?
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
Sensor
Increase the pressure when the temperature increases
Depends on the desired action if the disc or plug becomes detatched from the stem. (Fail open or Fail closed)

7. When a soldered joint is overheated...
Fuel - Heat - Oxygen
The flux burns and the joint becomes ineffective
Flash Tank
the type of coating and current

8. Momentarily closing the starting switch to check the rotation of the pump is known as __________ the pump.
1.25'(inch)
With the weld at a 45 degree angle
180
Bumping

9. An increase in pressure will cause the boiling point of water to ________...
100% of the rated capacity
BUT
.433psi
Increase

10. The best knot to use when lifting pipe vertically is the...
75 degrees - also 4 to 1
Clove hitch with a half hitch
8.33lbs
Provide oxygen barrier - stabilize and direct the force of the arc and to gather impurities in the form of slag.

11. The color code for type M copper is...
The tensile strength of the rod in PSI times 1 -000
cool and lubricate the die
Red.. think M&M is RED
Anchors

12. The function of a steam trap is to prevent the flow of ________________ - while allowing condensate and non-condensable gases to pass through.
The same OD as the branch
Steam
To provide movement cause from a change in temperature
The temperature that the joints are made - the flux and temperatures of the system

13. What is the best gasket to use on a flanged joint on medium pressure steam?
Discharge
Mechanical/Thermostatic
Insert pipe into fitting and turn 1/4 turn and hold
Spiral Wound

14. To determine the face to center measurement of a long radius 90 degree elbow - multiply the pipe size by...
1.5
orthographic
15 Feet
On high side of the system and turns gas to liquid.

15. What is the welding position 3 - on the electrode mean?
Ball joint - Bellows Joint and Packed Joint
Hydrostatic
handle will bend
Flat position only

16. The anode rod used in a hot water heater to protect it from corrosion is made of...
.707
Neutral
Magnesium
Eccentric reducers - flat on top

17. The amount of heat it takes to raise one pound of water one degree Fahrenheit is known as a...
West of the building
BUT
4 to 20 milliamps
Point at the base and sweep the base with the extinguisher

18. The type of drawing that most closely resembles an object as the eye would see it is referred to as a/an __________ drawing.
zinc
The science of heat transfer using water.
true isometric
None

19. A rating of 300# refers to a flange's...
Blue... think b-LLLLue
steam and condensate flowing in the same direction
Pressure Rating
Globe valve

20. Which of the following types of clamps are used to dampen a pipe's movement?
Globe valve
Waterlogged
Ball joint - Bellows Joint and Packed Joint
Snubber

21. Where is a bourdon tube found?
true isometric
In a pressure gauge
Pipe strain
Up and Down

22. Which of the following is a key element of a comprehensive safety and health program?
Hazard prevention and control.
Snubber
8 5/8'(inch)
Water

23. What is typically a final control element?
Valve
Fuel - Heat - Oxygen
Ammonia
All position

24. OD for 4'(inch)

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25. Which of the following is NOT acceptable as part of a personal fall arrest system?
The tubing has been cleaned for oxygen service
Body belts
In the direction of flow
pi * radius squared

26. Horizontal steam supply piping should be reduced in size by using...
.433psi
Eccentric reducer (flat on top)
None
Large end to smaller end to center(bull)

27. Why can flux be omitted in a brazed joint?
25' from any worker
The flux is in the filler material
cool and lubricate the die
7.48

28. When brazing for medical gas or refrigeration always...
Purge the line when brazing
7.0
the type of coating and current
Allow moisture to escape

29. There are __________ cubic inches in a gallon.
piping
OD
15 PSI
231

30. How much does 1 cubic foot of air weigh?
.075lbs
The tensile strength of the rod in PSI times 1 -000
foot valve
Dog Everything

31. Which rigging configuration has the greatest sling strength?
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)
The temperature that the joints are made - the flux and temperatures of the system
231
Basket

32. What are the main differences between soldering and brazing?
Clean all surfaces
15 PSI
Yellow.. think Dee Double U is yelloWWW
The temperature that the joints are made - the flux and temperatures of the system

33. To determine the set on a 45 degree offset you would multiply the travel by...
Capillary action
.707
The tensile strength of the rod in PSI times 1 -000
NEVER!

34. The density of 1 cubic inch of Mercury is...
In a pressure gauge
Forced convection - because the FAN forces convection!
.491lbs
tangent 1/2 angle x radius

35. Which of the following types of copper tube has the smallest wall thickness?
DWV
All the way to the shoulder
After cutting
Ground Fault Circuit Interrupter

36. What type of flame should be used to cut carbon steel?
Eccentric reducers - flat on top
3 1/2'(inch)
Neutral
The impeller

37. 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.
Globe valve
Capillary action
Green... think KKelly GREEN
foot valve

38. What is the best valve for throttling?
Arrange a wire rope clamp so that the dead end has the U bolts
Too fast of a travel rate
The flux is in the filler material
Globe

39. Zinc chills or metal fume fever are caused from welding on __________ steel.
galvanized
.433psi
radius squared times PI
When a large volume of condensate is generated

40. A tag line should be used on a crane lift...
Type K
Pneumatics
Argon
ALWAYS

41. The only entity that has the responsibility and authority to appoint the competent person is...
the employer
Spiral Wound
Notify response team and allow them to rescue.
Tagged and removed from service.

42. How many 2'(inch) pipes can be supplied from a 6'(inch) header?
9
DWV
Height * .433 = psig
OD

43. Which of the following is an essential element necessary to produce an ordinary fire?
The stud bolt is stronger than a machine bolt of the same size and material.
Fuel - Heat - Oxygen
bowline on a bight
30 Degrees

44. When a loop is needed at any point between ends of a rope - the proper knot to tie is the...
bowline on a bight
Up and Down
.707 x Travel
To protect the threads from rust.

45. What are the three types of steam traps?
36'(inch)
Thermostatic - Thermodynamic and Mechanical
Height * .433 = psig
Primer

46. Steam in contact with the water it has been generated from is known as ________________ steam.
Saturated
14.7 psia
Eccentric reducer (flat on top)
3 1/2'(inch)

47. One atmosphere is equal to...
14.7psia - always in PSI-A
Remove the packing
(Total Height - Elevation) * .433 = psig
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.

48. A gallon of water weighs...
NEVER!
13/16'(inch)
8.33lbs
212 degrees F

49. With a high pressure valve you should never _____ under pressure.
Vaporization
Alloying
Remove the packing
4 to 20 milliamps

50. What occurs in a flash tank?
Mechanical/Thermostatic
Large volumes of condensate flash back to liquid in the tank so it removes trapped steam from the condensate.
Protection for loss of water in the boiler.
.707

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Plumbing Certification

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