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. A rating of 150# refers to a flange's...
4 times
Condensate pump size
set point
Pressure rating

2. What is capillary action?
Arrange a wire rope clamp so that the dead end has the U bolts
Roller hangers
an eccentric reducer flat on top
The flow of a liquid into a small space

3. Which of the following is sometimes used as a shielding gas in the GTAW process?
Backflow preventer
Flux
In a pressure gauge
Argon

4. OD for 3'(inch)

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5. A __________ displacement pump discharges a definite quantity of liquid for each cycle.
Protection for loss of water in the boiler.
Steam
Spring hanger
Positive

6. What is the formula to figure the area of a circle?
radius squared times PI
Absolute
Immersion sensor
Prevailing wind speed and direction - environmental concerns - zoning requirements

7. What type of expansion joint utilizes mechanical movement?
Axis of pipe should be on a 45 degree
Saturated
Ball joint - Bellows Joint and Packed Joint
In a pressure gauge

8. The change in state from solid to liquid is known as...
Fusion
Air
Steam
compression

9. A bushing is NOT a good replacement for a reducer because...
Insufficient condensate drainage
DWV
Spiral Wound
Its cheaper!

10. In a refrigeration system a condensable gas is...
Ammonia
14'(inch)
7.0
Hazard prevention and control.

11. How far should a copper tube be inserted into a cup for a brazed joint?
When a large volume of condensate is generated
All the way to the shoulder
Spiral Wound
2 3/8'(inch)

12. The treatment of liquids at rest is known as...
Pipe penetration
Hydrostatics
the employer
Clove hitch with a half hitch

13. A guard rail system must withstand a minimum force of __________ pounds.
Eccentric reducer (flat on top)
200 lbs
Never
Dry expansion type

14. Why is it necessary to use flux on a soldered joint?
Bight - running end and standing part
1
All the way to the shoulder
To chemically prepare the pieces for soldering

15. The proper way to extinguish a fire is to...
Flat and horizontal positions
Insufficient condensate drainage
Point at the base and sweep the base with the extinguisher
The tubing has been cleaned for oxygen service

16. Momentarily closing the starting switch to check the rotation of the pump is known as __________ the pump.
Bumping
maximum rated capacity
2 3/8'(inch)
When a large volume of condensate is generated

17. One pound of water pressure is equal to...
To provide movement cause from a change in temperature
2.31ft
Pressure Rating
Solder joints

18. What is the standard pressure range for a pneumatic signal?
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.
Tagged and removed from service.
Green
3 to 15 psi

19. The weight of 1 cubic foot of water is...
62.4lbs
1.25'(inch)
Fuse
Flash Tank

20. A schematic drawing is...
Not to scale - does not show locations of equipment. It shows pipe size and flow.
orthographic
Blue... think b-LLLLue
231

21. When leaning a ladder against an object - the ladder should be at an approximate angle of __________ degrees.
14.7psia - always in PSI-A
Green... think KKelly GREEN
In a pressure gauge
75 degrees - also 4 to 1

22. 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.
To reduce the pressure from the cylinders to safe and workable pressures
When a large volume of condensate is generated
14.7 psia
dry expansion

23. In a Hydronic heating system - units at the top of the system not heating are likely to be...
9
Air Bound
The tensile strength of the rod in PSI times 1 -000
Point thumb up

24. The most that a crane should be loaded is...
Continuously
8 5/8'(inch)
100% of the rated capacity
orthographic

25. The last two digits on an E-6010 electrode specify...
the type of coating and current
.135 cu ft
To reduce the pressure from the cylinders to safe and workable pressures
Crimson... think aCRimson

26. The specific gravity of a liquid can only be measured using the following instrument...
hydrometer
Expansion Device
1.5
All the way to the shoulder

27. The function of a steam trap is to prevent the flow of ________________ - while allowing condensate and non-condensable gases to pass through.
The impeller
zinc
Steam
Large volumes of condensate flash back to liquid in the tank so it removes trapped steam from the condensate.

28. How high must you extend a ladder above the roof or deck?

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29. When using a cable come-a-long - what safety device will indicate overloading?
None
14.7 psia
25' from any worker
handle will bend

30. What size hole should be cut into a main to saddle IN a smaller pipe?
The tensile strength of the rod in PSI times 1 -000
62.4 pounds
Schedule 10
The same OD as the branch

31. How much does 1 cubic foot of air weigh?
1:48 - because 1/4 of an inch is 1/48th of a foot
Waterlogged
.075lbs
.433psi

32. One gallon of water weighs?
Manometer
Flashing
15 PSI
8.33 pounds

33. The density of water is...
Alloying
Expansion = Constant per 100ft multiplied by (Final Temp- Starting Temp) Example: 380' steel pipe (.0305 constant) is heated from 62 degrees to 171 degrees - how much did the pipe expand? Formula: .0305 * 3.8 (171-62) = 3 5/16'(inch)
62.4
Hydrostatic

34. The purpose of the foot switch on a power-operated pipe cutting and threading machine is to?

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35. What type of Copper tubing is not identified by color on the tubing itself?
Continuously
4 1/2'(inch)
1 5/16'(inch)
soft tempered

36. What is the sum of all angles in a triangle?
When a large volume of condensate is generated
Vaporization
180
In a pressure gauge

37. A single line drawing of a piping system represents the...
Never
Center of the pipe
2 and 1
Insufficient condensate drainage

38. A valve on the suction side of the pump should be...
Before the strainer and fully open.
foot valve
sewage
set point

39. 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?
Yellow.. think Dee Double U is yelloWWW
The impeller
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.
Ground Fault Circuit Interrupter

40. Why is it necessary to use roller hangers?
After cutting
Thermostatic - Thermodynamic and Mechanical
To allow for thermal movement
Height * .433 = psig

41. The symbol for pi is equivalent to...
On low side of the system and expands liquid to low pressure gas.
7.0
3.1416
1

42. When loosening the bolts on a flange one should...
Prevailing wind speed and direction - environmental concerns - zoning requirements
Loosen the far bolts first
In a pressure gauge
Dog Everything

43. The final step in the galvanizing of pipe is to dip the pipe into a bath of molten _________?
Sch 80 Steel pipe
zinc
.0361
Flat and horizontal positions

44. The sum of atmospheric and gauge pressure is known as __________ pressure.
To allow for thermal movement
34 feet
Vaporization
Absolute

45. An oil separator is required on systems using...
4 to 20 milliamps
Neutral
Ammonia
Segmental

46. What is the welding position 3 - on the electrode mean?
Flat position only
Ball joint - Bellows Joint and Packed Joint
Primer
13/16'(inch)

47. When brazing for medical gas or refrigeration always...
Dog Everything
soft tempered
Purge the line when brazing
The flux is in the filler material

48. Which one of the following alloys does not require flux when brazing copper to copper joints?
soft tempered
8.33 pounds
Strainer
BCuP - Stands for Brazed Copper Phosphorus

49. The color code for type K copper is...
Green... think KKelly GREEN
ALWAYS
Ball joint - Bellows Joint and Packed Joint
Above the main

50. The 6G welding position is...
With the weld at a 45 degree angle
1.25'(inch)
1728
.707