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. Which of the following is the decimal equivalent of 5/8'(inch)
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
.625
Coating

2. Capillary action is used in...
Choked position
15 PSI
Increase the pressure when the temperature increases
Solder joints

3. To view the west elevation the viewer's perspective is from the...
Mechanical/Thermostatic
14.7 psia
Expansion loop.
West of the building

4. One gallon of water occupies how many cubic feet?
Ammonia
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.
.135 cu ft
Condensate pump size

5. A simple example of a lever is...
A pry bar
cool and lubricate the die
9
Tagged and removed from service.

6. What type of expansion joint utilizes mechanical movement?
galvanized
zinc
Prevailing wind speed and direction - environmental concerns - zoning requirements
Ball joint - Bellows Joint and Packed Joint

7. How do you determine gear ratios?

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8. To sense the temperature remotely from the thermostat location you would use...
Remote bulb
Dog Everything
protect worker safety and health
Equalizing line

9. What type of Copper tubing is not identified by color on the tubing itself?
Continuously
36'(inch)
Backflow preventer
soft tempered

10. The type of valve permitted downstream of a temperature and pressure relief valve on a water heater is...
no valves permitted
Cavitation
Softener
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.

11. Oil is used on a pipe machine to...
dry expansion
1:48 - because 1/4 of an inch is 1/48th of a foot
cool and lubricate the die
1 foot

12. A gallon of water weighs...
NEVER!
8.33lbs
30 Degrees
Guide - Anchor - Guide

13. Steam condensate lines should use...
Absolute
near the middle of the jaws
Pressure rating
Sch 80 Steel pipe

14. What is the weakest part of a chain hoist?
Dog Everything
Anchors
lower hook
Magnesium

15. .433 psig is equal to how high of a water column?
Equalizing line
Hazard prevention and control.
1 foot
2.31ft

16. One cubic foot of water weighs?
The tubing has been cleaned for oxygen service
62.4 pounds
Large volumes of condensate flash back to liquid in the tank so it removes trapped steam from the condensate.
Mechanical/Thermostatic

17. 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.
The stud bolt is stronger than a machine bolt of the same size and material.
Discharge
Eccentric reducer (flat on top)
840

18. The main cause of undercutting is...
Too fast of a travel rate
Saturated
To reduce the pressure from the cylinders to safe and workable pressures
.625

19. The leading cause of on-the-job deaths in the construction industry is _______________.
Bumping
Center of the pipe
true isometric
falls

20. You should never blow your clothes off with oxygen because oxygen is a/an
Bumping
Capillary action
8.33lbs
supporter of combustion

21. A valve on the suction side of the pump should be...
Discharge
set point
Before the strainer and fully open.
the employer

22. When using a cable come-a-long - what safety device will indicate overloading?
After cutting
handle will bend
Globe valve
Flat position only

23. A diamond on an instrumentation loop diagram encloses information concerning...
Set point
14'(inch)
On low side of the system and expands liquid to low pressure gas.
The pump creates a differential in pressure that moves the water.

24. What is the minimum thickness for threading PVC pipe?
Hydrostatic
Sch 40
Globe valve
Before the strainer and fully open.

25. A concentric reducer could be used to connect to a horizontal pump _______________ line.
14.7 psia
the employer
Saturated
discharge

26. 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...
protect worker safety and health
Capillary action
Large end to smaller end to center(bull)
bowline on a bight

27. The symbol for pi is equivalent to...
Beam clamp
3.1416
840
All the way to the shoulder

28. How much does 1 cubic foot of air weigh?
The impeller
14.7psia - always in PSI-A
galvanized
.075lbs

29. OD for 1/2'(inch)

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30. The best method to ensure that a plastic joint is made properly - you should...
.7854 x D squared
75 degrees - also 4 to 1
Insert pipe into fitting and turn 1/4 turn and hold
2 3/8'(inch)

31. When a loop is needed at any point between ends of a rope - the proper knot to tie is the...
bowline on a bight
soft tempered
Clove hitch with a half hitch
piping

32. The specific weight of air and water is...
9
1728
The flux burns and the joint becomes ineffective
1

33. In one cubic foot there are _________ cubic inches.
62.4
A pry bar
1728
Eccentric reducer (flat on top)

34. Use of air as a power source is known as...
The same OD as the branch
Pneumatics
hydrometer
The Evaporator

35. Which rigging configuration has the greatest sling strength?
bowline on a bight
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
Axis of pipe should be on a 45 degree
Basket

36. Which of the following is NOT acceptable as part of a personal fall arrest system?
Argon
Center of the pipe
Body belts
Green... think KKelly GREEN

37. In a refrigeration system a condensable gas is...
Ammonia
OD
200 lbs
The flow of a liquid into a small space

38. To assemble a 4 bolt flange...
.707 x Travel
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.
The same OD as the branch
1/2 BTU

39. The last digit on a welding electrode refers to the __________ of the electrode.
Coating
The same ID as the branch
Body belts
9

40. When loosening the bolts on a flange one should...
Up and Down
Loosen the far bolts first
Primer
Height * .433 = psig

41. The function of a steam trap is to prevent the flow of ________________ - while allowing condensate and non-condensable gases to pass through.
Argon
Steam
Down Stream
Strainer

42. Standard atmospheric pressure at sea level is _____...
the employer
Body belts
Vaporization
14.7 psia

43. When a soldered joint is overheated...
the type of coating and current
Saturated
34 feet
The flux burns and the joint becomes ineffective

44. How often should the atmosphere be tested in a confined space?
Sch 80 Steel pipe
Continuously
Pipe penetration
Globe valve

45. When lifting objects with sharp edges you should use a...
Absolute
14.7psia - always in PSI-A
Softener
Sensor

46. What does the evaporator do?
All position
Roller hangers
Continuously
On low side of the system and expands liquid to low pressure gas.

47. An exit from a trench should be no more than...

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48. OD for 3'(inch)

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49. The density of 1 cubic inch of Mercury is...
Protection for loss of water in the boiler.
Continuously
protect worker safety and health
.491lbs

50. What should be done first when preparing a copper joint?
Primer
Strainer
Controller
Clean all surfaces