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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. When a pipe size is decreased by half - the carrying capacity of the pipe decreases by...
Quarter
Sch 80 Steel pipe
62.4lbs
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.

2. OD for 1/2'(inch)

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3. The 6G welding position is...
62.4 pounds
With the weld at a 45 degree angle
3 to 15 psi
Dry expansion type

4. What are the main differences between soldering and brazing?
ALWAYS
The system temperature - thermal and dynamic movement of the pipe and vibration.
The temperature that the joints are made - the flux and temperatures of the system
an eccentric reducer flat on top

5. What type of expansion joint does NOT utilize mechanical movement?
Down Stream
Expansion loop.
To allow for thermal movement
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

6. The density of water is...
Large volumes of condensate flash back to liquid in the tank so it removes trapped steam from the condensate.
With the weld at a 45 degree angle
62.4
Prevailing wind speed and direction - environmental concerns - zoning requirements

7. The anode rod used in a hot water heater to protect it from corrosion is made of...
.7854 x D squared
Down Stream
Magnesium
Point at the base and sweep the base with the extinguisher

8. There are __________ gallons in a cubic foot.
Insufficient condensate drainage
radius squared times PI
7.48
Eccentric reducer (flat on top)

9. Oil is used on a pipe machine to...
Air
Capillary action
cool and lubricate the die
Yellow.. think Dee Double U is yelloWWW

10. What is the standard pressure range for a pneumatic signal?
25 feet
Pressuretrol
falls
3 to 15 psi

11. The leading cause of on-the-job deaths in the construction industry is _______________.
Ball joint - Bellows Joint and Packed Joint
falls
pi * radius squared
OD

12. What do the first two digits mean in E7018 electrodes?
3 to 15 psi
Continuously
Solder joints
The tensile strength of the rod in PSI times 1 -000

13. You should never blow your clothes off with oxygen because oxygen is a/an
discharge
set point
supporter of combustion
7.0

14. Steam condensate lines should be installed on...
62.4lbs
Roller hangers
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
.707 x Travel

15. What effect does the fill pressure (static) have on a closed loop plumbing system?
Continuously
Act as a safety device to shut off the motor if the operator's foot is removed from the switch.
Anchors
None

16. What is the welding position 3 - on the electrode mean?
On low side of the system and expands liquid to low pressure gas.
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
On high side of the system and turns gas to liquid.
Flat position only

17. What type of sensor is directly in the process stream?
1
Increase the pressure when the temperature increases
Immersion sensor
Air

18. A schematic drawing is...
.0361
Hydraulics
.01745 - 3.1416 - and .7854
Not to scale - does not show locations of equipment. It shows pipe size and flow.

19. .433 psig is equal to how high of a water column?
hydrometer
1 foot
15 Feet
Sch 80 Steel pipe

20. Steam in contact with the water it has been generated from is known as ________________ steam.
200 lbs
When a large volume of condensate is generated
Saturated
8 5/8'(inch)

21. A Hartford loop is used for...
Protection for loss of water in the boiler.
34 feet
Globe valve
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

22. What type of expansion joint utilizes mechanical movement?
The flux is in the filler material
25' from any worker
Ball joint - Bellows Joint and Packed Joint
8.33lbs

23. A cooling tower must have a ________ or be open-site.
Hydraulics
Backflow preventer
Insure progressively tighter fit
8.33lbs

24. Why can flux be omitted in a brazed joint?
Flashing
The flux is in the filler material
.075lbs
Increase

25. Which one of the following measures and takes action?
Water
Controller
2.31ft
14.7psia - always in PSI-A

26. One atmosphere is equal to...
14.7psia - always in PSI-A
Capillary action
A pry bar
Hazard prevention and control.

27. What is not a requirement to size the steam trap on a heating unit?
Clove hitch with a half hitch
Pneumatics
Condensate pump size
10 feet

28. When a liquid changes immediately to a vapor it is called...
13/16'(inch)
Pipe strain
Flashing
Expansion Device

29. Steam condensate lines should use...
Hydrostatics
Two Hole
Sch 80 Steel pipe
Solder joints

30. A simple example of a lever is...
To protect the threads from rust.
Large volumes of condensate flash back to liquid in the tank so it removes trapped steam from the condensate.
To chemically prepare the pieces for soldering
A pry bar

31. The sum of atmospheric and gauge pressure is known as __________ pressure.
Cavitation
Absolute
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)
BCuP - Stands for Brazed Copper Phosphorus

32. A gallon of water weighs...
8.33lbs
30 Degrees
14.7 psia
Its cheaper!

33. What size hole should be cut into a main to saddle IN a smaller pipe?
The same OD as the branch
1.5
Green
Flashing

34. The best knot to use when lifting pipe vertically is the...
the core
To protect the threads from rust.
On high side of the system and turns gas to liquid.
Clove hitch with a half hitch

35. When a loop is needed at any point between ends of a rope - the proper knot to tie is the...
Clove hitch with a half hitch
200 lbs
bowline on a bight
1

36. The smallest nominal size DWV copper tube is...

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37. What is the welding position 1 - on the electrode mean?
protect worker safety and health
All position
lower hook
an eccentric reducer flat on top

38. The treatment of liquids in motion is known as...
Neutral
Hydraulics
In a pressure gauge
8.33 pounds

39. The pipe fitting that makes a 180 degree turn is called a/an?
return fitting
Spring hanger
galvanized
In a pressure gauge

40. Which of the following is NOT acceptable as part of a personal fall arrest system?
Pressure rating
Body belts
Notify response team and allow them to rescue.
piping

41. What does a + plus sign mean?
Mechanical return is used.
Coating
(Total Height - Elevation) * .433 = psig
Pipe penetration

42. The most that a crane should be loaded is...
Backflow preventer
25 feet
All the way to the shoulder
100% of the rated capacity

43. The pipe size of a pipe changes from the ID to the OD on what pipe size?

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44. What is the purpose for a weep hole in a saddle pad?
Allow moisture to escape
maximum rated capacity
Arrange a wire rope clamp so that the dead end has the U bolts
tangent 1/2 angle x radius

45. A diamond on an instrumentation loop diagram encloses information concerning...
Absolute
Expansion Device
the core
Set point

46. Where should the high pressure condensate be piped to before entering the receiver?
Flash Tank
Ground Fault Circuit Interrupter
Too fast of a travel rate
Clove hitch with a half hitch

47. The specific weight of air and water is...
1
.707 x Travel
Multiply the length of the hypotenuse of the roll and the set by 1.414
Insert pipe into fitting and turn 1/4 turn and hold

48. To determine the travel for a 45 degree rolling offset you would...
Positive
Multiply the length of the hypotenuse of the roll and the set by 1.414
Arrange a wire rope clamp so that the dead end has the U bolts
Depends on the desired action if the disc or plug becomes detatched from the stem. (Fail open or Fail closed)

49. A guard rail system must withstand a minimum force of __________ pounds.
200 lbs
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
The temperature that the joints are made - the flux and temperatures of the system
The type of coating and current

50. A fan coil uses ______ to distribute heating or cooling to the space.
Forced convection - because the FAN forces convection!
Ammonia
Fuel - Heat - Oxygen
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)