Test your basic knowledge |

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 type of hanger uses a spring that splits the rod?
Argon
sewage
Climbing the cross braces.
Spring hanger

2. 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?
Absolute
Pneumatics
Neutral
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.

3. What is on the low side of the vapor compression cycle?
Raise the load
100% of the rated capacity
13/16'(inch)
The Evaporator

4. The amount of heat necessary bring about a change of state from solid to liquid or liquid to gas is known as _______________ heat.
Remote bulb
The pump creates a differential in pressure that moves the water.
Latent
steam and condensate flowing in the same direction

5. The letters MSDS stand for...
Steam
Anchors
1.5
Material Safety Data Sheet

6. How far should a copper tube be inserted into a cup for a brazed joint?
Snubber
All the way to the shoulder
The flow of a liquid into a small space
3.1416

7. There are __________ cubic inches in a gallon.
bowline on a bight
Level the 90 in horizontal position determine inside arc - backside arc and face to center dimensions for 60 degree elbow - mark and cut
231
Flat position only

8. What effect does the fill pressure (static) have on a closed loop plumbing system?
Large end to smaller end to center(bull)
None
Solder joints
Arrange a wire rope clamp so that the dead end has the U bolts

9. When using a cable come-a-long - what safety device will indicate overloading?
36'(inch)
Too fast of a travel rate
Hydrostatics
handle will bend

10. What does the crane signal with the index finger pointed forward in a swirling motion signal?
7.0
radius squared times PI
Raise the load
The type of coating and current

11. The color code for type L copper is...
8 5/8'(inch)
Blue... think b-LLLLue
Depends on the desired action if the disc or plug becomes detatched from the stem. (Fail open or Fail closed)
BUT

12. What type of valve should be used to bypass a control valve?
Anchors
Globe valve
1:48 - because 1/4 of an inch is 1/48th of a foot
5 9/16'(inch)

13. A bushing is NOT a good replacement for a reducer because...
Its cheaper!
2.31ft
Multiply the length of the hypotenuse of the roll and the set by 1.414
Loosen the far bolts first

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

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15. A simple example of a lever is...
A pry bar
In a pressure gauge
Sch 40
.0361

16. When ordering ACR copper specify the size by...
falls
Crimson... think aCRimson
1 foot
OD

17. Which of the following types of copper tube has the smallest wall thickness?
Ammonia
Positive
compression
DWV

18. What causes water to move in a Hydronic system?
Hazard prevention and control.
The pump creates a differential in pressure that moves the water.
Globe
handle will bend

19. Which of the elements of a wire rope aid in absorbing '(inch)Shock Loads'(inch)?
the core
2.31ft
Remove the packing
Loosen the far bolts first

20. What is the best gasket to use on a flanged joint on medium pressure steam?
dry expansion
Axis of pipe should be on a 45 degree
Controller
Spiral Wound

21. How much does 1 cubic foot of air weigh?
take-off must be subtracted from the end-to-center measurement.
Absolute
.075lbs
The pump creates a differential in pressure that moves the water.

22. If a horizontal pipe connecting to the suction side of a pump requires a reducer - it should be connected with...
Flash Tank
an eccentric reducer flat on top
The same OD as the branch
.491lbs

23. Soldered joints should never be used on systems above...
Insure progressively tighter fit
250 degrees
Positive
Hydrostatic

24. The last two digits on an E-6010 electrode specify
Magnesium
To allow for thermal movement
lower hook
The type of coating and current

25. Steam condensate lines should be installed on...
Roller hangers
.135 cu ft
Anchors
1/2 BTU

26. Which of the following is sometimes used as a shielding gas in the GTAW process?
Anchors
The Evaporator
.075lbs
Argon

27. How often should the atmosphere be tested in a confined space?
steam and condensate flowing in the same direction
Increase the pressure when the temperature increases
Continuously
15 Feet

28. The specific gravity of a gas is relative to the specific weight of _______________ - which has a specific gravity of one.
Air
.0361
Pressure Rating
lower hook

29. To view the west elevation the viewer's perspective is from the...
discharge
West of the building
34 feet
Pipe penetration

30. The color code for DWV copper is...
dry expansion
1 5/16'(inch)
Hydrostatic
Yellow.. think Dee Double U is yelloWWW

31. Steam in contact with the water it has been generated from is known as ________________ steam.
1/2 BTU
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.
Saturated
1728

32. The main cause of undercutting is...
Large volumes of condensate flash back to liquid in the tank so it removes trapped steam from the condensate.
Too fast of a travel rate
BCuP - Stands for Brazed Copper Phosphorus
orthographic

33. Although the model codes usually say the melting point of a brazing alloy must be at least 1000º F - the technical temperature specified by the Copper Development Association and the American Welding Society is __________ degrees Fahrenheit.
Coating
840
Immersion sensor
Ammonia

34. A tag line should be used on a crane lift...
Eccentric reducers - flat on top
ALWAYS
13/16'(inch)
Eccentric reducer (flat on top)

35. The treatment of liquids at rest is known as...
soft tempered
Hydrostatics
piping
62.4lbs

36. What temperature does water boil at sea level?
Point thumb up
Spiral
212 degrees F
Water

37. What instrument is best for measuring vacuum?
Manometer
All the way to the shoulder
.433psi
supporter of combustion

38. Momentarily closing the starting switch to check the rotation of the pump is known as __________ the pump.
Before the strainer and fully open.
Manometer
Steam
Bumping

39. When lifting objects with sharp edges you should use a...
To chemically prepare the pieces for soldering
Forced convection - because the FAN forces convection!
Softener
Cavitation

40. If the travel of a 45 degree offset is known - what formula can be used to find the advance?
Sensor
.625
.707 x Travel
180

41. Why is it necessary to use flux on a soldered joint?
Ammonia
return fitting
On high side of the system and turns gas to liquid.
To chemically prepare the pieces for soldering

42. 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.
blow the valves for a moment
Sch 40
dry expansion
180

43. Which rigging configuration has the greatest sling strength?
Basket
Magnesium
.707 x Travel
Level the 90 in horizontal position determine inside arc - backside arc and face to center dimensions for 60 degree elbow - mark and cut

44. How many 2'(inch) pipes can be supplied from a 6'(inch) header?
When a large volume of condensate is generated
9
The pump creates a differential in pressure that moves the water.
Softener

45. An up-feed steam heating system has the heating units...
Hydrostatic
Above the main
Fuel - Heat - Oxygen
Increase the pressure when the temperature increases

46. The best knot to use when lifting pipe vertically is the...
Clove hitch with a half hitch
supporter of combustion
The type of coating and current
Allow moisture to escape

47. The density of 1 cubic inch of Mercury is...
.491lbs
Latent
Waterlogged
212 degrees F

48. The color code for type '(inch)K'(inch) copper is?
Green
8.33 pounds
7.0
BUT

49. To stop all crane movement the ______ signal should be used.
The same ID as the branch
Allow moisture to escape
Absolute
Dog Everything

50. An ejector pump is typically used to pump __________.
Continuously
The pump creates a differential in pressure that moves the water.
A pry bar
sewage