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 only entity that has the responsibility and authority to appoint the competent person is...
2 3/8'(inch)
30 Degrees
.135 cu ft
the employer

2. The color code for type L copper is...
Multiply the length of the hypotenuse of the roll and the set by 1.414
Vaporization
Blue... think b-LLLLue
Segmental

3. Which is the correct formula for the area of a circle?
Ball joint - Bellows Joint and Packed Joint
Thermostatic - Thermodynamic and Mechanical
.7854 x D squared
Segmental

4. Use of air as a power source is known as...
Allow moisture to escape
Pneumatics
36'(inch)
Solder joints

5. Steam supply using parallel flow is...
supporter of combustion
Point thumb up
steam and condensate flowing in the same direction
Two Hole

6. Name the three methods of transferring heat.
The pump creates a differential in pressure that moves the water.
Conduction - convection and radiant.
Above the main
The flux burns and the joint becomes ineffective

7. A diamond on an instrumentation loop diagram encloses information concerning...
falls
Set point
Dog Everything
Immersion sensor

8. The control point adjustment on a receiver is used to change the _______________.
Notify response team and allow them to rescue.
Alloying
Point at the base and sweep the base with the extinguisher
set point

9. What type of flame should be used to cut carbon steel?
Manometer
Large end to smaller end to center(bull)
Neutral
Positive

10. The specific gravity of a gas is relative to the specific weight of _______________ - which has a specific gravity of one.
Crimson... think aCRimson
Air
8 5/8'(inch)
MAPP - acetylene - and propane

11. The device that controls the pressure in a low pressure steam boiler is called a...
Pressuretrol
the type of coating and current
Manometer
Before the strainer and fully open.

12. Where should the high pressure condensate be piped to before entering the receiver?
Provide oxygen barrier - stabilize and direct the force of the arc and to gather impurities in the form of slag.
250 degrees
Flash Tank
Increase

13. What is installed after the isolation valve and before the trap union on a standard trap assembly?
pi * radius squared
Strainer
7.0
To protect the threads from rust.

14. A guard rail system must withstand a minimum force of __________ pounds.
200 lbs
All the way to the shoulder
Clean all surfaces
1/2 BTU

15. To raise the boom of a crane you would...
protect worker safety and health
180
.0361
Point thumb up

16. In a Hydronic heating system - units at the top of the system not heating are likely to be...
14.7psia - always in PSI-A
Expansion Device
Air Bound
With the weld at a 45 degree angle

17. The pipe size of a pipe changes from the ID to the OD on what pipe size?

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18. What do the first two digits mean in E7018 electrodes?
Material Safety Data Sheet
The tensile strength of the rod in PSI times 1 -000
The flux burns and the joint becomes ineffective
Basket

19. An oil separator is required on systems using...
Sch 80 Steel pipe
Ammonia
Blue... think b-LLLLue
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)

20. Calculate head pressure in a section of vertical pipe?
Conduction - convection and radiant.
Ammonia
Raise the load
Height * .433 = psig

21. The main cause of undercutting is...
Pressure Rating
Axis of pipe should be on a 45 degree
840
Too fast of a travel rate

22. A thermostatic steam trap that fails in the closed position would cause a heating unit to become...
None
212 degrees F
hydrometer
Waterlogged

23. 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.
dry expansion
Insure progressively tighter fit
Level the 90 in horizontal position determine inside arc - backside arc and face to center dimensions for 60 degree elbow - mark and cut
.135 cu ft

24. What causes water hammer?
1 foot
bowline on a bight
14'(inch)
Insufficient condensate drainage

25. A concentric reducer could be used to connect to a horizontal pump _______________ line.
Pipe strain
Discharge
.491lbs
take-off must be subtracted from the end-to-center measurement.

26. What does the evaporator do?
On low side of the system and expands liquid to low pressure gas.
231
14'(inch)
Air

27. What does a condenser do?
compression
West of the building
On high side of the system and turns gas to liquid.
Absolute

28. The anode rod used in a hot water heater to protect it from corrosion is made of...
25' from any worker
Provide oxygen barrier - stabilize and direct the force of the arc and to gather impurities in the form of slag.
Magnesium
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.

29. An abrasive wheel should never run faster than it...
Remove any paint or rust.
Flat position only
Solder joints
maximum rated capacity

30. The pipe that connects the steam header to the boiler return connection is the...
The tensile strength of the rod in PSI times 1 -000
Forced convection - because the FAN forces convection!
Body belts
Equalizing line

31. To determine the face to center measurement of a long radius 90 degree elbow - multiply the pipe size by...
Forced convection - because the FAN forces convection!
1.5
Center of the pipe
bowline on a bight

32. What is the welding position 2 - on the electrode mean?
.075lbs
The same OD as the branch
steel to copper joints
Flat and horizontal positions

33. Condensate lines should be pitched...
In the direction of flow
10 feet
Globe
To reduce the pressure from the cylinders to safe and workable pressures

34. To order a reducing tee you should specify the size by...
Large end to smaller end to center(bull)
Spiral Wound
West of the building
To chemically prepare the pieces for soldering

35. A dielectric fitting should be used on...
steel to copper joints
Quarter
1728
Before the strainer and fully open.

36. A gallon of water weighs...
zinc
8.33lbs
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.
the core

37. Steam in contact with the water it has been generated from is known as ________________ steam.
When a large volume of condensate is generated
25 feet
Saturated
Up and Down

38. What is the specific gravity of water?
Point at the base and sweep the base with the extinguisher
ALWAYS
34 feet
1

39. A direct acting thermostat is used to...
.135 cu ft
Increase the pressure when the temperature increases
Immersion sensor
4 to 20 milliamps

40. The specific gravity of a liquid can only be measured using the following instrument...
Point thumb up
orthographic
hydrometer
Down Stream

41. How do you determine gear ratios?

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42. What does the stamp Oxy-Med stand for on copper tubing?
1728
The tubing has been cleaned for oxygen service
hydrometer
Groove

43. Zinc chills or metal fume fever are caused from welding on __________ steel.
galvanized
.491lbs
None
1:48 - because 1/4 of an inch is 1/48th of a foot

44. Which of the elements of a wire rope aid in absorbing '(inch)Shock Loads'(inch)?
231
the core
DWV
Expansion Device

45. To properly align a flange you must perform what is commonly called a ______ hole...
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)
To reduce the pressure from the cylinders to safe and workable pressures
In the hot water heating pumps discharge piping.
Two Hole

46. What is used to soften PVC and remove the gloss?
Equalizing line
62.4 pounds
Primer
Basket

47. Exits from a trench 150' long and 4' deep must be located within how many feet of a worker in the trench?
1
Snubber
Hazard prevention and control.
25 feet

48. What type of copper is recommended for refrigeration?
Blue... think b-LLLLue
.135 cu ft
34 feet
Type K

49. The maximum practical suction lift on positive displacement pumps is 22 feet and on centrifugal pumps it is __________ feet.
Argon
34 feet
pi * radius squared
15 Feet

50. You should never blow your clothes off with oxygen because oxygen is a/an
Continuously
supporter of combustion
Conduction - convection and radiant.
1:48 - because 1/4 of an inch is 1/48th of a foot