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. Standard atmospheric pressure at sea level is _____...
14.7 psia
Depends on the desired action if the disc or plug becomes detatched from the stem. (Fail open or Fail closed)
Set point
Capillary action

2. To fabricate a 60 degree elbow from a 90 you would...
dry expansion
.491lbs
maximum rated capacity
Level the 90 in horizontal position determine inside arc - backside arc and face to center dimensions for 60 degree elbow - mark and cut

3. What type of copper is recommended for refrigeration?
supporter of combustion
62.4 pounds
After cutting
Type K

4. If a pump is operating under static suction lift conditions - a __________ may be installed in the suction line to avoid losing the pump's prime each time the pump shuts off.
foot valve
Sch 80 Steel pipe
1.25'(inch)
Climbing the cross braces.

5. Momentarily closing the starting switch to check the rotation of the pump is known as __________ the pump.
1/2 BTU
ALWAYS
OD
Bumping

6. What type of hanger uses a spring that splits the rod?
In the hot water heating pumps discharge piping.
Water
Spring hanger
true isometric

7. A rating of 150# refers to a flange's...
Flux
Pressure rating
Expansion Device
All the way to the shoulder

8. The amount of heat it takes to raise one pound of water one degree Fahrenheit is known as a...
zinc
Expansion loop.
Raise the load
BUT

9. The color code for type K copper is...
Roller hangers
Green... think KKelly GREEN
14.7 psia
34 feet

10. What does a + plus sign mean?
Alloying
Air Bound
Pipe penetration
100% of the rated capacity

11. Calculate head pressure in a section of vertical pipe?
Flash Tank
Height * .433 = psig
7.0
tangent 1/2 angle x radius

12. What is the welding position 3 - on the electrode mean?
10 feet
The science of heat transfer using water.
Flat position only
ALWAYS

13. Where should the pressure enter a globe valve?
The tensile strength of the rod in PSI times 1 -000
take-off must be subtracted from the end-to-center measurement.
Erratic readings
Depends on the desired action if the disc or plug becomes detatched from the stem. (Fail open or Fail closed)

14. What are 3 fuel gases used for heating pipe or tubing?
NEVER!
Multiply the length of the hypotenuse of the roll and the set by 1.414
MAPP - acetylene - and propane
ALWAYS

15. Ladders with visible defects - such as broken rungs - cracked side rails - or broken steps must be...
Tagged and removed from service.
In the hot water heating pumps discharge piping.
dry expansion
Guide - Anchor - Guide

16. What does the G stand for in the 2G - 5G and 6G weld positions?
The system temperature - thermal and dynamic movement of the pipe and vibration.
Groove
Immersion sensor
Allow moisture to escape

17. What effect does the fill pressure (static) have on a closed loop plumbing system?
Two Hole
None
Equalizing line
Too fast of a travel rate

18. Horizontal steam supply piping should be reduced in size by using...
To chemically prepare the pieces for soldering
Eccentric reducer (flat on top)
galvanized
Prevailing wind speed and direction - environmental concerns - zoning requirements

19. The 6G welding position is...
Primer
Continuously
Ammonia
With the weld at a 45 degree angle

20. In a Hydronic heating system - units at the top of the system not heating are likely to be...
The tubing has been cleaned for oxygen service
Crimson... think aCRimson
With the weld at a 45 degree angle
Air Bound

21. One gallon of water weighs?
Remove any paint or rust.
Notify response team and allow them to rescue.
Climbing the cross braces.
8.33 pounds

22. What type of expansion joint utilizes mechanical movement?
Above the main
Raise the load
Ball joint - Bellows Joint and Packed Joint
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)

23. A float and thermostatic trap is a...
Ground Fault Circuit Interrupter
the employer
Mechanical/Thermostatic
The stud bolt is stronger than a machine bolt of the same size and material.

24. The best knot to use when lifting pipe vertically is the...
100% of the rated capacity
Clove hitch with a half hitch
Conduction - convection and radiant.
supporter of combustion

25. The specific gravity of a liquid can only be measured using the following instrument...
The science of heat transfer using water.
Bumping
take-off must be subtracted from the end-to-center measurement.
hydrometer

26. Why is it necessary to use roller hangers?
steel to copper joints
Raise the load
To allow for thermal movement
Air Bound

27. To assemble a 4 bolt flange...
Too fast of a travel rate
tangent 1/2 angle x radius
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.
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)

28. .433 psig is equal to how high of a water column?
1 foot
bowline on a bight
4 1/2'(inch)
Point at the base and sweep the base with the extinguisher

29. A fan coil uses ______ to distribute heating or cooling to the space.
Argon
62.4
Forced convection - because the FAN forces convection!
Yellow.. think Dee Double U is yelloWWW

30. There are __________ cubic inches in a gallon.
231
Ammonia
Height * .433 = psig
212 degrees F

31. The specific gravity of a gas is relative to the specific weight of _______________ - which has a specific gravity of one.
Saturated
Pipe penetration
Hazard prevention and control.
Air

32. Which of the following types of clamps are used to dampen a pipe's movement?
.0361
Snubber
Protection for loss of water in the boiler.
Point thumb up

33. Formula for a cubic foot of an unknown substances weight?
Vaporization
Insufficient condensate drainage
Choked position
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

34. When should a person designated as an attendant attempt to rescue a worker that is trapped?
Insert pipe into fitting and turn 1/4 turn and hold
The type of coating and current
10 feet
Never

35. A device that mechanically attaches to the side of a flange on a beam is called a...
Beam clamp
BUT
Expansion Device
Mechanical/Thermostatic

36. The most that a crane should be loaded is...
Level the 90 in horizontal position determine inside arc - backside arc and face to center dimensions for 60 degree elbow - mark and cut
Flash Tank
100% of the rated capacity
Mechanical/Thermostatic

37. What does GFCI stand for?
Water
Remove any paint or rust.
Ground Fault Circuit Interrupter
Capillary action

38. Oil is used on a pipe machine to...
(Total Height - Elevation) * .433 = psig
cool and lubricate the die
Point thumb up
Ball joint - Bellows Joint and Packed Joint

39. How much does 1 cubic foot of air weigh?
Above the main
ALWAYS
15 Feet
.075lbs

40. The specific weight of air and water is...
1
.433psi
34 feet
1/2 BTU

41. The combining of more than one metal is...
Alloying
Flashing
The temperature that the joints are made - the flux and temperatures of the system
Hydrostatics

42. Guides are used near...
Not to scale - does not show locations of equipment. It shows pipe size and flow.
supporter of combustion
Anchors
Flashing

43. What does the evaporator do?
On low side of the system and expands liquid to low pressure gas.
ALWAYS
The pump creates a differential in pressure that moves the water.
.707 x Travel

44. Why can flux be omitted in a brazed joint?
3 to 15 psi
62.4 pounds
The flux is in the filler material
25 feet

45. A dielectric fitting should be used on...
blow the valves for a moment
steel to copper joints
Increase in friction
231

46. A bushing is NOT a good replacement for a reducer because...
Hazard prevention and control.
Its cheaper!
Blue... think b-LLLLue
Waterlogged

47. Where is a bourdon tube found?
All position
After cutting
Argon
In a pressure gauge

48. The density of water is...
Conduction - convection and radiant.
Backflow preventer
Climbing the cross braces.
62.4

49. A vent is not needed on a condensate receiver when...
.135 cu ft
1:48 - because 1/4 of an inch is 1/48th of a foot
Mechanical return is used.
Water

50. To raise the boom of a crane you would...
Point thumb up
Prevailing wind speed and direction - environmental concerns - zoning requirements
Ground Fault Circuit Interrupter
Height * .433 = psig