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. The color code for ACR copper is...
Notify response team and allow them to rescue.
8 5/8'(inch)
Crimson... think aCRimson
galvanized

2. The color code for type '(inch)K'(inch) copper is?
2 3/8'(inch)
Green
Pressure rating
ALWAYS

3. What is not a requirement to size the steam trap on a heating unit?
Point at the base and sweep the base with the extinguisher
Condensate pump size
Forced convection - because the FAN forces convection!
Remove the packing

4. The maximum practical suction lift on positive displacement pumps is 22 feet and on centrifugal pumps it is __________ feet.
hydrometer
15 Feet
MAPP - acetylene - and propane
supporter of combustion

5. When loosening the bolts on a flange one should...
250 degrees
.625
34 feet
Loosen the far bolts first

6. What is the formula to calculate thermal expansion?

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7. Since _______________ is virtually incompressible - pressure has little effect on its volume.
.625
840
Water
Backflow preventer

8. A sling is weakest in which position?
Choked position
sewage
To provide movement cause from a change in temperature
Center of the pipe

9. Calculate head pressure in a section of vertical pipe?
handle will bend
4 to 20 milliamps
Immersion sensor
Height * .433 = psig

10. How far should a copper tube be inserted into a cup for a brazed joint?
All the way to the shoulder
Green... think KKelly GREEN
Strainer
Sch 40

11. What is the best valve for throttling?
Globe
To provide movement cause from a change in temperature
1.5
Solder joints

12. The color code for type K copper is...
Green... think KKelly GREEN
After cutting
212 degrees F
Flooded

13. One gallon of water occupies how many cubic feet?
Groove
.135 cu ft
Water
Equalizing line

14. When brazing for medical gas or refrigeration always...
On low side of the system and expands liquid to low pressure gas.
Point at the base and sweep the base with the extinguisher
Softener
Purge the line when brazing

15. Use of air as a power source is known as...
Blue... think b-LLLLue
In the direction of flow
Pneumatics
Large volumes of condensate flash back to liquid in the tank so it removes trapped steam from the condensate.

16. The final step in the galvanizing of pipe is to dip the pipe into a bath of molten _________?
Level the 90 in horizontal position determine inside arc - backside arc and face to center dimensions for 60 degree elbow - mark and cut
lower hook
Fuel - Heat - Oxygen
zinc

17. The specific weight of mercury is...
.0361
The tubing has been cleaned for oxygen service
piping
With the weld at a 45 degree angle

18. Name the three methods of transferring heat.
Expansion Device
Conduction - convection and radiant.
Sch 80 Steel pipe
7.0

19. The only entity that has the responsibility and authority to appoint the competent person is...
Solder joints
the employer
14.7psia - always in PSI-A
pi * radius squared

20. When a soldered joint is overheated...
Red.. think M&M is RED
Act as a safety device to shut off the motor if the operator's foot is removed from the switch.
When a large volume of condensate is generated
The flux burns and the joint becomes ineffective

21. An abrasive wheel should never run faster than it...
.707 x Travel
2 and 1
Material Safety Data Sheet
maximum rated capacity

22. A dielectric fitting should be used on...
steel to copper joints
ALWAYS
Loosen the far bolts first
Spiral Wound

23. What type of valve should be used to bypass a control valve?
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.
hydrometer
231
Globe valve

24. The specific gravity of a gas is relative to the specific weight of _______________ - which has a specific gravity of one.
Air
.625
1728
Act as a safety device to shut off the motor if the operator's foot is removed from the switch.

25. Soldered joints should never be used on systems above...
compression
Raise the load
Spiral
250 degrees

26. An ejector pump is typically used to pump __________.
Level the 90 in horizontal position determine inside arc - backside arc and face to center dimensions for 60 degree elbow - mark and cut
14.7psia - always in PSI-A
100% of the rated capacity
sewage

27. A device that mechanically attaches to the side of a flange on a beam is called a...
Yellow.. think Dee Double U is yelloWWW
Beam clamp
Too fast of a travel rate
2 and 1

28. What are the three rope parts used in tying knots and hitches?
7.48
Bight - running end and standing part
Steam
Green... think KKelly GREEN

29. Which of the following is a key element of a comprehensive safety and health program?
Hazard prevention and control.
Segmental
cool and lubricate the die
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)

30. When selecting a hanger for a piping system you should consider...
The system temperature - thermal and dynamic movement of the pipe and vibration.
.0361
2 and 1
Set point

31. What is the standard pressure range for a pneumatic signal?
Flat and horizontal positions
Hydrostatics
3 to 15 psi
Absolute

32. An up-feed steam heating system has the heating units...
the core
Above the main
pi * radius squared
8 5/8'(inch)

33. Which of the following types of clamps are used to dampen a pipe's movement?
Sensor
9
Basket
Snubber

34. The 6G welding position is...
With the weld at a 45 degree angle
1 foot
foot valve
Bumping

35. Which of the following is NOT acceptable as part of a personal fall arrest system?
The impeller
Basket
Body belts
Never

36. The letters MSDS stand for...
4 to 20 milliamps
8.33 pounds
Material Safety Data Sheet
None

37. In a Hydronic heating system - units at the top of the system not heating are likely to be...
Conduction - convection and radiant.
Air Bound
Alloying
Hydrostatic

38. A direct acting thermostat is used to...
Increase the pressure when the temperature increases
5 9/16'(inch)
Its cheaper!
Basket

39. OSHA was enacted to...
Increase the pressure when the temperature increases
protect worker safety and health
Increase
Remove the packing

40. The sum of atmospheric and gauge pressure is known as __________ pressure.
1
100% of the rated capacity
Type K
Absolute

41. To assemble a 4 bolt flange...
Air Bound
Bight - running end and standing part
8.33lbs
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.

42. A float and thermostatic trap is a...
4 to 20 milliamps
Ammonia
Mechanical/Thermostatic
Anchors

43. What is typically a final control element?
100% of the rated capacity
Valve
.625
All the way to the shoulder

44. The anode rod used in a hot water heater to protect it from corrosion is made of...
ALWAYS
All the way to the shoulder
Pressuretrol
Magnesium

45. What type of copper is recommended for refrigeration?
Increase the pressure when the temperature increases
hydrometer
The tubing has been cleaned for oxygen service
Type K

46. With a high pressure valve you should never _____ under pressure.
Hydrostatic
OD
Remove the packing
Snubber

47. What does the term '(inch)never saddle a dead horse'(inch) mean?
compression
Arrange a wire rope clamp so that the dead end has the U bolts
Body belts
When a large volume of condensate is generated

48. To determine the set on a 45 degree offset you would multiply the travel by...
return fitting
.707
Schedule 10
Its cheaper!

49. Which of the following is NOT a reason to use stud bolts instead of machine bolts for bolting flanged piping joints?
The stud bolt is stronger than a machine bolt of the same size and material.
7.0
Air
Too fast of a travel rate

50. 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.
231
Guide - Anchor - Guide
4 times
dry expansion