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. How many 2'(inch) pipes can be supplied from a 6'(inch) header?
Globe valve
9
Air Bound
Hydrostatics

2. How often should the atmosphere be tested in a confined space?
Before the strainer and fully open.
the core
the type of coating and current
Continuously

3. In a refrigeration system a condensable gas is...
Clean all surfaces
Argon
All the way to the shoulder
Ammonia

4. .433 psig is equal to how high of a water column?
To allow for thermal movement
1 foot
Argon
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

5. A vertical line in an isometric drawing represents...
the core
Up and Down
steel to copper joints
200 lbs

6. The type of drawing that views a building by looking directly at the front - top and side is referred to as a/an ___________ drawing.
Snubber
orthographic
Large volumes of condensate flash back to liquid in the tank so it removes trapped steam from the condensate.
bowline on a bight

7. What do the first two digits mean in E7018 electrodes?
Never
Absolute
The tensile strength of the rod in PSI times 1 -000
Capillary action

8. A valve on the suction side of the pump should be...
Before the strainer and fully open.
1
BCuP - Stands for Brazed Copper Phosphorus
The flow of a liquid into a small space

9. Calculate head pressure in a section of vertical pipe?
Height * .433 = psig
near the middle of the jaws
The stud bolt is stronger than a machine bolt of the same size and material.
Eccentric reducers - flat on top

10. What instrument is best for measuring vacuum?
Manometer
Roller hangers
Ball joint - Bellows Joint and Packed Joint
steam and condensate flowing in the same direction

11. An oil separator is required on systems using...
Notify response team and allow them to rescue.
compression
5 9/16'(inch)
Ammonia

12. What temperature does water boil at sea level?
Notify response team and allow them to rescue.
Its cheaper!
212 degrees F
4 times

13. Which of the following constants are used when working with circles and areas?
Clove hitch with a half hitch
.01745 - 3.1416 - and .7854
Multiply the length of the hypotenuse of the roll and the set by 1.414
62.4lbs

14. When leaning a ladder against an object - the ladder should be at an approximate angle of __________ degrees.
Allow moisture to escape
Fusion
75 degrees - also 4 to 1
231

15. The final step in the galvanizing of pipe is to dip the pipe into a bath of molten _________?
handle will bend
.0361
zinc
return fitting

16. Which rigging configuration has the greatest sling strength?
DWV
Ammonia
2.31ft
Basket

17. A thermostatic steam trap that fails in the closed position would cause a heating unit to become...
4 1/2'(inch)
Insure progressively tighter fit
hydrometer
Waterlogged

18. Which of the following is NOT a reason to use stud bolts instead of machine bolts for bolting flanged piping joints?
Increase the pressure when the temperature increases
.01745 - 3.1416 - and .7854
The stud bolt is stronger than a machine bolt of the same size and material.
Yellow.. think Dee Double U is yelloWWW

19. The proper way to extinguish a fire is to...
25' from any worker
steel to copper joints
200 lbs
Point at the base and sweep the base with the extinguisher

20. When should you ream the end of a pipe?
Softener
After cutting
the employer
To chemically prepare the pieces for soldering

21. What is the formula to figure take off on a 45 degree elbow?

22. If the architectural scale is 1/4'(inch) equals 1 foot - the ratio would be...
NEVER!
Green... think KKelly GREEN
1.25'(inch)
1:48 - because 1/4 of an inch is 1/48th of a foot

23. An up-feed steam heating system has the heating units...
Choked position
Above the main
NEVER!
Dog Everything

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

25. An abrasive wheel should never run faster than it...
Beam clamp
Mechanical/Thermostatic
maximum rated capacity
Increase the pressure when the temperature increases

26. Condensate lines should be pitched...
In the direction of flow
radius squared times PI
Not to scale - does not show locations of equipment. It shows pipe size and flow.
handle will bend

27. OD for 1/2'(inch)

28. What is the weakest part of a chain hoist?
1
Coating
lower hook
Globe

29. When a soldered joint is overheated...
The flux burns and the joint becomes ineffective
62.4 pounds
8 5/8'(inch)
Steam

30. A vent is not needed on a condensate receiver when...
Sensor
Mechanical return is used.
1728
Magnesium

31. If a horizontal pipe connecting to the suction side of a pump requires a reducer - it should be connected with...
Conduction - convection and radiant.
Hazard prevention and control.
an eccentric reducer flat on top
14.7psia - always in PSI-A

32. What is the function of the covering on the electrodes during the process of '(inch)Shielded Metal Arc Welding'(inch)?
Provide oxygen barrier - stabilize and direct the force of the arc and to gather impurities in the form of slag.
Argon
The stud bolt is stronger than a machine bolt of the same size and material.
soft tempered

33. One cubic foot of water weighs?
supporter of combustion
Groove
62.4 pounds
Loosen the far bolts first

34. The letters MSDS stand for...
The type of coating and current
Choked position
A pry bar
Material Safety Data Sheet

35. To properly align a flange you must perform what is commonly called a ______ hole...
Sensor
Climbing the cross braces.
Two Hole
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.

36. What is the formula to figure the area of a circle?
radius squared times PI
180
foot valve
To allow for thermal movement

37. The pipe that connects the steam header to the boiler return connection is the...
25' from any worker
Bight - running end and standing part
Equalizing line
Flat and horizontal positions

38. What is Hydronics?
Crimson... think aCRimson
The science of heat transfer using water.
Before the strainer and fully open.
14'(inch)

39. OD for 1'(inch)

40. Which of the following is NOT a reason for using cutting oil when threading pipe?
To protect the threads from rust.
8.33lbs
1
Two Hole

41. What does the term '(inch)never saddle a dead horse'(inch) mean?
Arrange a wire rope clamp so that the dead end has the U bolts
Large volumes of condensate flash back to liquid in the tank so it removes trapped steam from the condensate.
Flat position only
Spring hanger

42. To raise the boom of a crane you would...
The type of coating and current
To provide movement cause from a change in temperature
7.48
Point thumb up

43. The maximum practical suction lift on positive displacement pumps is 22 feet and on centrifugal pumps it is __________ feet.
6 5/8'(inch)
15 Feet
The flux is in the filler material
Thermostatic - Thermodynamic and Mechanical

44. The color code for type L copper is...
galvanized
Blue... think b-LLLLue
Remove any paint or rust.
Hydrostatic

45. What does the evaporator do?
steel to copper joints
Anchors
Raise the load
On low side of the system and expands liquid to low pressure gas.

46. The function of a steam trap is to prevent the flow of ________________ - while allowing condensate and non-condensable gases to pass through.
Steam
.7854 x D squared
2 3/8'(inch)
Height * .433 = psig

47. Where should the pressure enter a globe valve?
take-off must be subtracted from the end-to-center measurement.
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
25 feet
Depends on the desired action if the disc or plug becomes detatched from the stem. (Fail open or Fail closed)

48. A device that mechanically attaches to the side of a flange on a beam is called a...
.625
Beam clamp
Air Bound
Up and Down

49. A rating of 150# refers to a flange's...
Pressure rating
The temperature that the joints are made - the flux and temperatures of the system
The flow of a liquid into a small space
Pipe penetration

50. The color code for DWV copper is...
The impeller
Provide oxygen barrier - stabilize and direct the force of the arc and to gather impurities in the form of slag.
Yellow.. think Dee Double U is yelloWWW
ALWAYS