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 face to center measurement of any welded angle fitting equals...
Globe
tangent 1/2 angle x radius
Increase in friction
Dog Everything

2. In one cubic foot there are _________ cubic inches.
1728
Guide - Anchor - Guide
Steam
Backflow preventer

3. The specific gravity of a liquid can only be measured using the following instrument...
62.4 pounds
840
Strainer
hydrometer

4. To order a reducing tee you should specify the size by...
Large end to smaller end to center(bull)
Snubber
The tensile strength of the rod in PSI times 1 -000
Beam clamp

5. What instrument is best for measuring vacuum?
near the middle of the jaws
Manometer
.075lbs
After cutting

6. What is the welding position 2 - on the electrode mean?
Point thumb up
Divide the diameter by half 4 times - put the 2nd and 4th number together to get the answer. Example - 6'(inch) 45 would be - 6 - 3 - 1 1/2 and 3/4. Answer 3 3/4'(inch)
Flat and horizontal positions
MAPP - acetylene - and propane

7. How far should a copper tube be inserted into a cup for a brazed joint?
Eccentric reducers - flat on top
Tagged and removed from service.
steel to copper joints
All the way to the shoulder

8. To properly align a flange you must perform what is commonly called a ______ hole...
Hydrostatics
The impeller
Loosen the far bolts first
Two Hole

9. The pipe fitting that makes a 180 degree turn is called a/an?
return fitting
Condensate pump size
Basket
Coating

10. The symbol for pi is equivalent to...
Coating
3.1416
Allow moisture to escape
Waterlogged

11. Zinc chills or metal fume fever are caused from welding on __________ steel.
Fuel - Heat - Oxygen
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
galvanized
14.7psia - always in PSI-A

12. The type of drawing that views a building by looking directly at the front - top and side is referred to as a/an ___________ drawing.
orthographic
Primer
Eccentric reducer (flat on top)
Segmental

13. What does a + plus sign mean?
Pipe penetration
Controller
Flat position only
Before the strainer and fully open.

14. What type of copper is recommended for refrigeration?
30 Degrees
Type K
BCuP - Stands for Brazed Copper Phosphorus
Magnesium

15. Why is it necessary to use flux on a soldered joint?
Conduction - convection and radiant.
To chemically prepare the pieces for soldering
Bight - running end and standing part
3 to 15 psi

16. Guides are used near...
200 lbs
Softener
Increase
Anchors

17. When a cranes signaler's hand is pointed up with his finger moving in a circle it means to...
Water
Expansion Device
Raise the load
2 and 1

18. The only entity that has the responsibility and authority to appoint the competent person is...
Pipe penetration
1 5/16'(inch)
5 9/16'(inch)
the employer

19. An up-feed steam heating system has the heating units...
take-off must be subtracted from the end-to-center measurement.
Body belts
Thermostatic - Thermodynamic and Mechanical
Above the main

20. The change in state from a liquid to gas is known as...
piping
The stud bolt is stronger than a machine bolt of the same size and material.
Vaporization
Hydraulics

21. A direct acting thermostat is used to...
Increase the pressure when the temperature increases
Multiply the length of the hypotenuse of the roll and the set by 1.414
Valve
13/16'(inch)

22. Which one of the following measures and takes action?
Bumping
On low side of the system and expands liquid to low pressure gas.
3 1/2'(inch)
Controller

23. The type of drawing that most closely resembles an object as the eye would see it is referred to as a/an __________ drawing.
true isometric
Valve
Magnesium
compression

24. The 6G welding position is...
With the weld at a 45 degree angle
MAPP - acetylene - and propane
.491lbs
15 Feet

25. OD for 2'(inch)

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26. To assemble a 4 bolt flange...
In a pressure gauge
protect worker safety and health
Continuously
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.

27. The centerline of piping in a horizontal plane on an isometric drawing is most generally drawn at __________ degrees from the horizontal.
soft tempered
30 Degrees
8.33 pounds
212 degrees F

28. What does GFCI stand for?
The Evaporator
Guide - Anchor - Guide
Down Stream
Ground Fault Circuit Interrupter

29. To stop all crane movement the ______ signal should be used.
Mechanical/Thermostatic
Dog Everything
.433psi
.7854 x D squared

30. What is the formula to calculate thermal expansion?

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31. The amount of heat it takes to raise one pound of water one degree Fahrenheit is known as a...
BUT
piping
The temperature that the joints are made - the flux and temperatures of the system
soft tempered

32. Why can flux be omitted in a brazed joint?
Point at the base and sweep the base with the extinguisher
Flux
The flux is in the filler material
Guide - Anchor - Guide

33. What does a condenser do?
soft tempered
62.4 pounds
Expansion loop.
On high side of the system and turns gas to liquid.

34. What does the term '(inch)never saddle a dead horse'(inch) mean?
5 9/16'(inch)
Softens it
Arrange a wire rope clamp so that the dead end has the U bolts
Its cheaper!

35. How much does 1 cubic foot of air weigh?
The system temperature - thermal and dynamic movement of the pipe and vibration.
.075lbs
Set point
set point

36. To determine the set on a 45 degree offset you would multiply the travel by...
212 degrees F
Softener
.707
Level the 90 in horizontal position determine inside arc - backside arc and face to center dimensions for 60 degree elbow - mark and cut

37. The color code for type L copper is...
30 Degrees
Blue... think b-LLLLue
Center of the pipe
100% of the rated capacity

38. The last digit on a welding electrode refers to the __________ of the electrode.
Coating
Segmental
Insure progressively tighter fit
OD

39. Which way should the bevel face on an orifice plate?
Down Stream
Ammonia
The Evaporator
Pipe strain

40. A tag line should be used on a crane lift...
Alloying
The type of coating and current
ALWAYS
Loosen the far bolts first

41. A rating of 300# refers to a flange's...
Backflow preventer
handle will bend
Pressure Rating
.707 x Travel

42. Which component in a closed control loop is the primary element?
Bumping
9
Sensor
13/16'(inch)

43. What occurs in a flash tank?
Large volumes of condensate flash back to liquid in the tank so it removes trapped steam from the condensate.
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.
Insufficient condensate drainage
maximum rated capacity

44. What should be done to prepare a flange for the gasket installation?
Argon
840
Cavitation
Remove any paint or rust.

45. When should you ream the end of a pipe?
Too fast of a travel rate
The impeller
62.4
After cutting

46. Momentarily closing the starting switch to check the rotation of the pump is known as __________ the pump.
Bumping
2 and 1
The tubing has been cleaned for oxygen service
protect worker safety and health

47. One gallon of water weighs?
Center of the pipe
The same OD as the branch
Prevailing wind speed and direction - environmental concerns - zoning requirements
8.33 pounds

48. What is the purpose for a weep hole in a saddle pad?
Flat position only
Absolute
Large end to smaller end to center(bull)
Allow moisture to escape

49. When a pipe size is decreased by half - the carrying capacity of the pipe decreases by...
Quarter
handle will bend
Divide the diameter by half 4 times - put the 2nd and 4th number together to get the answer. Example - 6'(inch) 45 would be - 6 - 3 - 1 1/2 and 3/4. Answer 3 3/4'(inch)
Guide - Anchor - Guide

50. What is the purpose of the expansion joint in a steam system?
To provide movement cause from a change in temperature
Cavitation
5 9/16'(inch)
the core