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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. The specific weight of mercury is...
Pipe penetration
.0361
DWV
8.33 pounds

2. What would be the result of an incorrectly installed orifice plate?
Equalizing line
8 5/8'(inch)
Erratic readings
the employer

3. Both soldered and brazed joints are made by heating a properly prepared joint to the proper temperature and the flowing of a filler metal by means of...
Spiral Wound
Blue... think b-LLLLue
1
Capillary action

4. A Hartford loop is used for...
take-off must be subtracted from the end-to-center measurement.
1.25'(inch)
Protection for loss of water in the boiler.
Insert pipe into fitting and turn 1/4 turn and hold

5. 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?
2 3/8'(inch)
14.7psia - always in PSI-A
Blue... think b-LLLLue
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.

6. What is the best valve for throttling?
The impeller
Insure progressively tighter fit
62.4lbs
Globe

7. 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.
Sch 40
Flat position only
1.25'(inch)
840

8. In a refrigeration system a condensable gas is...
Ammonia
soft tempered
15 PSI
Type K

9. Which of the following constants are used when working with circles and areas?
steam and condensate flowing in the same direction
The science of heat transfer using water.
.01745 - 3.1416 - and .7854
Blue... think b-LLLLue

10. To sense the temperature remotely from the thermostat location you would use...
Fuse
14'(inch)
Remote bulb
The flux burns and the joint becomes ineffective

11. What type of hanger uses a spring that splits the rod?
Down Stream
Spring hanger
Roller hangers
steam and condensate flowing in the same direction

12. What type of copper tubing joint requires use of a ferrule?
180
compression
62.4
8.33lbs

13. A valve on the suction side of the pump should be...
Absolute
The tensile strength of the rod in PSI times 1 -000
Protection for loss of water in the boiler.
Before the strainer and fully open.

14. When a cranes signaler's hand is pointed up with his finger moving in a circle it means to...
The flux is in the filler material
pi * radius squared
Raise the load
Saturated

15. 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.
dry expansion
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.
25 feet
Magnesium

16. Ladders with visible defects - such as broken rungs - cracked side rails - or broken steps must be...
1.5
Ammonia
Before the strainer and fully open.
Tagged and removed from service.

17. The color code for ACR copper is...
Fusion
MAPP - acetylene - and propane
Remove the packing
Crimson... think aCRimson

18. What is typically a final control element?
Immersion sensor
Positive
In the hot water heating pumps discharge piping.
Valve

19. When a liquid changes immediately to a vapor it is called...
Flashing
(Total Height - Elevation) * .433 = psig
212 degrees F
1/2 BTU

20. What does the evaporator do?
Spiral
Flux
Immersion sensor
On low side of the system and expands liquid to low pressure gas.

21. Calculate head pressure in a section of vertical pipe?
.491lbs
the employer
Height * .433 = psig
.433psi

22. Which of the following is NOT a reason to use stud bolts instead of machine bolts for bolting flanged piping joints?
Alloying
Sch 40
discharge
The stud bolt is stronger than a machine bolt of the same size and material.

23. Which way should the bevel face on an orifice plate?
Solder joints
Alloying
Spiral
Down Stream

24. A device that mechanically attaches to the side of a flange on a beam is called a...
NEVER!
14'(inch)
Hydraulics
Beam clamp

25. The treatment of liquids at rest is known as...
180
14.7 psia
8 5/8'(inch)
Hydrostatics

26. To determine the set on a 45 degree offset you would multiply the travel by...
.707
Groove
Flooded
Absolute

27. An up-feed steam heating system has the heating units...
hydrometer
Above the main
Remote bulb
Flooded

28. Which rigging configuration has the greatest sling strength?
Basket
15 Feet
75 degrees - also 4 to 1
Remote bulb

29. Which of the following methods of access to a scaffold is prohibited?
Climbing the cross braces.
Loosen the far bolts first
Backflow preventer
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.

30. The anode rod used in a hot water heater to protect it from corrosion is made of...
Magnesium
supporter of combustion
In a pressure gauge
180

31. What does the G stand for in the 2G - 5G and 6G weld positions?
Groove
Insure progressively tighter fit
Loosen the far bolts first
Valve

32. What is the purpose for a weep hole in a saddle pad?
protect worker safety and health
Hazard prevention and control.
Allow moisture to escape
To chemically prepare the pieces for soldering

33. The pipe that connects the steam header to the boiler return connection is the...
Set point
Equalizing line
A pry bar
NEVER!

34. One foot of water exerts...
Fuse
.433psi
The same ID as the branch
Bight - running end and standing part

35. 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.
foot valve
Flat and horizontal positions
Saturated
14.7 psia

36. A dielectric fitting should be used on...
steel to copper joints
Clove hitch with a half hitch
Insure progressively tighter fit
Softens it

37. The specific weight of air and water is...
Large end to smaller end to center(bull)
Yellow.. think Dee Double U is yelloWWW
Up and Down
1

38. There are __________ gallons in a cubic foot.
A pry bar
radius squared times PI
7.48
Flux

39. Use of air as a power source is known as...
Pneumatics
8 5/8'(inch)
Allow moisture to escape
zinc

40. Formula for a cubic foot of an unknown substances weight?
Erratic readings
Eccentric reducers - flat on top
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
In a pressure gauge

41. Steam in contact with the water it has been generated from is known as ________________ steam.
Hydrostatic
Beam clamp
Saturated
compression

42. What is the formula to calculate thermal expansion?

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43. When gripping a pipe with a pipe wrench - the wrench should be adjusted so the pipe is...
Dry expansion type
Roller hangers
near the middle of the jaws
Raise the load

44. On a centrifugal pump what is rotated by the motor?
The impeller
The system temperature - thermal and dynamic movement of the pipe and vibration.
Cavitation
4 1/2'(inch)

45. What is the purpose of the oxygen and acetylene regulators?
Large end to smaller end to center(bull)
Air
To reduce the pressure from the cylinders to safe and workable pressures
Type K

46. What type of expansion joint utilizes mechanical movement?
Ball joint - Bellows Joint and Packed Joint
The flux is in the filler material
A pry bar
no valves permitted

47. To stop all crane movement the ______ signal should be used.
Quarter
Dog Everything
The same OD as the branch
Softener

48. Condensate lines should be pitched...
On high side of the system and turns gas to liquid.
falls
In the direction of flow
Two Hole

49. A sling is weakest in which position?
Choked position
discharge
Its cheaper!
In the hot water heating pumps discharge piping.

50. Which one of the following measures and takes action?
Material Safety Data Sheet
Pipe penetration
Controller
Globe