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 sum of atmospheric and gauge pressure is known as __________ pressure.
Too fast of a travel rate
Absolute
3 1/2'(inch)
radius squared times PI

2. When a pipe size is decreased by half - the carrying capacity of the pipe decreases by...
None
Quarter
bowline on a bight
Center of the pipe

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

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4. One gallon of water weighs?
Flat and horizontal positions
foot valve
.491lbs
8.33 pounds

5. What is the welding position 2 - on the electrode mean?
The tubing has been cleaned for oxygen service
Latent
Flat and horizontal positions
To reduce the pressure from the cylinders to safe and workable pressures

6. When a liquid changes immediately to a vapor it is called...
Flashing
Remove any paint or rust.
Point at the base and sweep the base with the extinguisher
Clove hitch with a half hitch

7. OD for 1/2'(inch)

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8. If the architectural scale is 1/4'(inch) equals 1 foot - the ratio would be...
1:48 - because 1/4 of an inch is 1/48th of a foot
15 PSI
1 foot
Magnesium

9. A vertical line in an isometric drawing represents...
Up and Down
pi * radius squared
1 5/16'(inch)
3 1/2'(inch)

10. What is Hydronics?
The science of heat transfer using water.
Provide oxygen barrier - stabilize and direct the force of the arc and to gather impurities in the form of slag.
Neutral
200 lbs

11. Which of the following is sometimes used as a shielding gas in the GTAW process?
Argon
15 Feet
Roller hangers
.135 cu ft

12. The weight of 1 cubic foot of water is...
Dog Everything
Backflow preventer
62.4lbs
1728

13. In a Hydronic heating system - units at the top of the system not heating are likely to be...
Pneumatics
250 degrees
Air Bound
36'(inch)

14. What type of expansion joint utilizes mechanical movement?
Ball joint - Bellows Joint and Packed Joint
The system temperature - thermal and dynamic movement of the pipe and vibration.
200 lbs
Guide - Anchor - Guide

15. The specific weight of air and water is...
1
Bumping
Bight - running end and standing part
Positive

16. The treatment of liquids in motion is known as...
zinc
.707 x Travel
Hydraulics
BCuP - Stands for Brazed Copper Phosphorus

17. What size hole should be cut into a main to saddle ON a smaller pipe?
Neutral
Remote bulb
Material Safety Data Sheet
The same ID as the branch

18. Which of the following is NOT a reason to use stud bolts instead of machine bolts for bolting flanged piping joints?
Coating
lower hook
The stud bolt is stronger than a machine bolt of the same size and material.
1/2 BTU

19. The most that a crane should be loaded is...
The tubing has been cleaned for oxygen service
100% of the rated capacity
Set point
Thermostatic - Thermodynamic and Mechanical

20. The last two digits on an E-6010 electrode specify...
Controller
.075lbs
MAPP - acetylene - and propane
the type of coating and current

21. The type of drawing that most closely resembles an object as the eye would see it is referred to as a/an __________ drawing.
Discharge
true isometric
MAPP - acetylene - and propane
When a large volume of condensate is generated

22. The control point adjustment on a receiver is used to change the _______________.
7.0
piping
zinc
set point

23. What is typically a final control element?
The type of coating and current
1 foot
To protect the threads from rust.
Valve

24. What is capillary action?
Increase the pressure when the temperature increases
The flow of a liquid into a small space
231
A pry bar

25. The best knot to use when lifting pipe vertically is the...
The flux burns and the joint becomes ineffective
Clove hitch with a half hitch
set point
Arrange a wire rope clamp so that the dead end has the U bolts

26. When arranging weld coupons for testing position 6G...
.075lbs
On low side of the system and expands liquid to low pressure gas.
Axis of pipe should be on a 45 degree
2 3/8'(inch)

27. The combining of more than one metal is...
Increase
Increase in friction
Alloying
The pump creates a differential in pressure that moves the water.

28. Condensate lines should be pitched...
Capillary action
2.31ft
In the direction of flow
Immersion sensor

29. The final step in the galvanizing of pipe is to dip the pipe into a bath of molten _________?
Flooded
galvanized
Conduction - convection and radiant.
zinc

30. What is on the low side of the vapor compression cycle?
Argon
The Evaporator
Above the main
Steam

31. Where should the high pressure condensate be piped to before entering the receiver?
Pressure Rating
10 feet
Flash Tank
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)

32. The density of water is...
Center of the pipe
Globe valve
62.4
In the hot water heating pumps discharge piping.

33. A cooling tower must have a ________ or be open-site.
Backflow preventer
The science of heat transfer using water.
no valves permitted
Valve

34. The change in state from a liquid to gas is known as...
no valves permitted
To allow for thermal movement
Vaporization
Spring hanger

35. If a horizontal pipe connecting to the suction side of a pump requires a reducer - it should be connected with...
no valves permitted
an eccentric reducer flat on top
1.5
15 Feet

36. What type of valve should be used to bypass a control valve?
1/2 BTU
Globe valve
ALWAYS
8.33lbs

37. Which of the following is NOT a reason for using cutting oil when threading pipe?
near the middle of the jaws
Beam clamp
Flat and horizontal positions
To protect the threads from rust.

38. Standard atmospheric pressure at sea level is _____...
250 degrees
take-off must be subtracted from the end-to-center measurement.
14.7 psia
Valve

39. What do the first two digits mean in E7018 electrodes?
Ball joint - Bellows Joint and Packed Joint
tangent 1/2 angle x radius
7.48
The tensile strength of the rod in PSI times 1 -000

40. When should a person designated as an attendant attempt to rescue a worker that is trapped?
Never
2nd gear divided by primary gear. Example: A machine has a primary pulley of 6'(inch) and a secondary pulley of 24'(inch). Formula is 24/6=4 - so the ratio is 4 to 1
The tensile strength of the rod in PSI times 1 -000
To allow for thermal movement

41. An abrasive wheel should never run faster than it...
Hydrostatic
In the hot water heating pumps discharge piping.
near the middle of the jaws
maximum rated capacity

42. 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.
Eccentric reducer (flat on top)
.433psi
In a pressure gauge
foot valve

43. What does a condenser do?
cool and lubricate the die
On high side of the system and turns gas to liquid.
212 degrees F
Climbing the cross braces.

44. How many 2'(inch) pipes can be supplied from a 6'(inch) header?
Forced convection - because the FAN forces convection!
true isometric
9
Insert pipe into fitting and turn 1/4 turn and hold

45. How much does 1 cubic foot of air weigh?
maximum rated capacity
Down Stream
.075lbs
Backflow preventer

46. Why can flux be omitted in a brazed joint?
Air Bound
.075lbs
Basket
The flux is in the filler material

47. A tag line should be used on a crane lift...
62.4 pounds
Type K
Saturated
ALWAYS

48. A concentric reducer could be used to connect to a horizontal pump _______________ line.
Discharge
Yellow.. think Dee Double U is yelloWWW
bowline on a bight
Anchors

49. How much heat is required to raise 1/2 pound of water 1 degree F?
1/2 BTU
Softener
DWV
Tagged and removed from service.

50. Since _______________ is virtually incompressible - pressure has little effect on its volume.
Argon
Water
Quarter
piping