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 is not a requirement to size the steam trap on a heating unit?
Depends on the desired action if the disc or plug becomes detatched from the stem. (Fail open or Fail closed)
Condensate pump size
Point thumb up
Red.. think M&M is RED

2. A rating of 300# refers to a flange's...
Pressure Rating
Quarter
pi * radius squared
62.4lbs

3. Which of the following types of copper tube has the smallest wall thickness?
DWV
To protect the threads from rust.
Two Hole
Air

4. When ordering ACR copper specify the size by...
steam and condensate flowing in the same direction
Protection for loss of water in the boiler.
Argon
OD

5. Why is it necessary to use roller hangers?
Groove
1 foot
To allow for thermal movement
Coating

6. When lifting objects with sharp edges you should use a...
maximum rated capacity
Magnesium
Softener
Controller

7. Oil is used on a pipe machine to...
cool and lubricate the die
Groove
the type of coating and current
8 5/8'(inch)

8. A schematic drawing is...
Not to scale - does not show locations of equipment. It shows pipe size and flow.
The science of heat transfer using water.
soft tempered
Notify response team and allow them to rescue.

9. OD for 6'(inch)

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10. The color code for type K copper is...
Green... think KKelly GREEN
The impeller
BUT
4 times

11. The color code for type L copper is...
Protection for loss of water in the boiler.
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
.7854 x D squared
Blue... think b-LLLLue

12. What type of sensor is directly in the process stream?
Globe valve
Immersion sensor
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.
A pry bar

13. A vertical line in an isometric drawing represents...
1728
Act as a safety device to shut off the motor if the operator's foot is removed from the switch.
Up and Down
15 Feet

14. Momentarily closing the starting switch to check the rotation of the pump is known as __________ the pump.
take-off must be subtracted from the end-to-center measurement.
Choked position
return fitting
Bumping

15. What is the purpose for a weep hole in a saddle pad?
Remove any paint or rust.
Flashing
Quarter
Allow moisture to escape

16. What does the crane signal with the index finger pointed forward in a swirling motion signal?
Raise the load
Flashing
Blue... think b-LLLLue
Allow moisture to escape

17. When loosening the bolts on a flange one should...
Loosen the far bolts first
1.25'(inch)
Guide - Anchor - Guide
Large volumes of condensate flash back to liquid in the tank so it removes trapped steam from the condensate.

18. One pound of water pressure is equal to...
15 PSI
the type of coating and current
2.31ft
Sch 40

19. One atmosphere is equal to...
14.7psia - always in PSI-A
Up and Down
Insure progressively tighter fit
Latent

20. The color code for type M copper is...
Increase
Red.. think M&M is RED
piping
Flashing

21. The function of a steam trap is to prevent the flow of ________________ - while allowing condensate and non-condensable gases to pass through.
take-off must be subtracted from the end-to-center measurement.
Condensate pump size
Steam
Bumping

22. Zinc chills or metal fume fever are caused from welding on __________ steel.
supporter of combustion
galvanized
2 and 1
Climbing the cross braces.

23. When is it safe to remove the old packing from a valve that is under pressure?
8 5/8'(inch)
NEVER!
1/2 BTU
Waterlogged

24. What is the purpose of the expansion joint in a steam system?
Dog Everything
Insufficient condensate drainage
protect worker safety and health
To provide movement cause from a change in temperature

25. The pipe that connects the steam header to the boiler return connection is the...
steam and condensate flowing in the same direction
1.25'(inch)
Air Bound
Equalizing line

26. Where should the high pressure condensate be piped to before entering the receiver?
212 degrees F
Never
Flash Tank
Its cheaper!

27. The specific weight of air and water is...
To provide movement cause from a change in temperature
1
Spiral
To chemically prepare the pieces for soldering

28. A valve on the suction side of the pump should be...
Before the strainer and fully open.
Positive
25 feet
Clove hitch with a half hitch

29. To determine the face to center measurement of a long radius 90 degree elbow - multiply the pipe size by...
1.5
(Total Height - Elevation) * .433 = psig
Its cheaper!
Conduction - convection and radiant.

30. One gallon of water weighs?
Arrange a wire rope clamp so that the dead end has the U bolts
Climbing the cross braces.
.0361
8.33 pounds

31. Which of the following is NOT a reason to use stud bolts instead of machine bolts for bolting flanged piping joints?
lower hook
Raise the load
The stud bolt is stronger than a machine bolt of the same size and material.
Eccentric reducers - flat on top

32. The amount of heat it takes to raise one pound of water one degree Fahrenheit is known as a...
Backflow preventer
Insert pipe into fitting and turn 1/4 turn and hold
Saturated
BUT

33. What is Hydronics?
The science of heat transfer using water.
Anchors
The temperature that the joints are made - the flux and temperatures of the system
piping

34. A system which the refrigerant is in the shell and cools the fluid in the tubes is...
Backflow preventer
Steam
bowline on a bight
Flooded

35. Which type of orifice plate is designed to measure flow of liquids containing solids?
8.33 pounds
Cavitation
Pipe strain
Segmental

36. When a loop is needed at any point between ends of a rope - the proper knot to tie is the...
bowline on a bight
The tensile strength of the rod in PSI times 1 -000
Sch 40
When a large volume of condensate is generated

37. What should the outside attendant do to rescue a worker who shows physiological effects of exposure in a confined space?
The flux is in the filler material
Schedule 10
8.33lbs
Notify response team and allow them to rescue.

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

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39. A dielectric fitting should be used on...
On low side of the system and expands liquid to low pressure gas.
.625
Forced convection - because the FAN forces convection!
steel to copper joints

40. When changing pipe sizes in the horizontal supply or return lines of a two-pipe hot water heating system use...
Fuel - Heat - Oxygen
All position
Eccentric reducers - flat on top
Yellow.. think Dee Double U is yelloWWW

41. In one cubic foot there are _________ cubic inches.
Latent
1:48 - because 1/4 of an inch is 1/48th of a foot
MAPP - acetylene - and propane
1728

42. What is the standard for an electronic signal?
2 3/8'(inch)
Ammonia
Ground Fault Circuit Interrupter
4 to 20 milliamps

43. What does a condenser do?
On low side of the system and expands liquid to low pressure gas.
7.48
On high side of the system and turns gas to liquid.
3 to 15 psi

44. A tag line should be used on a crane lift...
The impeller
Ball joint - Bellows Joint and Packed Joint
ALWAYS
tangent 1/2 angle x radius

45. The face to center measurement of any welded angle fitting equals...
tangent 1/2 angle x radius
pi * radius squared
Green... think KKelly GREEN
Fuse

46. The last two digits on an E-6010 electrode specify...
the employer
Segmental
the type of coating and current
Vaporization

47. The best method to ensure that a plastic joint is made properly - you should...
Hydrostatics
Thermostatic - Thermodynamic and Mechanical
Raise the load
Insert pipe into fitting and turn 1/4 turn and hold

48. What is the expansion and compression of water vapor in a pump?
4 to 20 milliamps
tangent 1/2 angle x radius
Neutral
Cavitation

49. What is typically a final control element?
Type K
Valve
Equalizing line
Act as a safety device to shut off the motor if the operator's foot is removed from the switch.

50. What temperature does water boil at sea level?
212 degrees F
Fusion
62.4lbs
Hydraulics