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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. What should be done to prepare a flange for the gasket installation?
pi * radius squared
Insert pipe into fitting and turn 1/4 turn and hold
Remove any paint or rust.
The tubing has been cleaned for oxygen service

2. Which of the following has the largest inside diameter?
Schedule 10
Climbing the cross braces.
Axis of pipe should be on a 45 degree
Flat position only

3. 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.
Choked position
3 1/2'(inch)
Ammonia
dry expansion

4. When arranging weld coupons for testing position 6G...
Axis of pipe should be on a 45 degree
Groove
To allow for thermal movement
2.31ft

5. You should never blow your clothes off with oxygen because oxygen is a/an
Ammonia
When a large volume of condensate is generated
Sensor
supporter of combustion

6. OD for 1'(inch)

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7. The combining of more than one metal is...
250 degrees
Clove hitch with a half hitch
10 feet
Alloying

8. The amount of heat it takes to raise one pound of water one degree Fahrenheit is known as a...
The Evaporator
BUT
Forced convection - because the FAN forces convection!
.0361

9. OD for 5'(inch)

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10. There are __________ gallons in a cubic foot.
7.48
Ammonia
Globe
Sensor

11. How much heat is required to raise 1/2 pound of water 1 degree F?
Its cheaper!
The stud bolt is stronger than a machine bolt of the same size and material.
Green
1/2 BTU

12. A concentric reducer could be used to connect to a horizontal pump _______________ line.
Remove any paint or rust.
Height * .433 = psig
Discharge
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)

13. A dielectric fitting should be used on...
To chemically prepare the pieces for soldering
Capillary action
Beam clamp
steel to copper joints

14. One pound of water pressure is equal to...
Guide - Anchor - Guide
take-off must be subtracted from the end-to-center measurement.
Waterlogged
2.31ft

15. Which rigging configuration has the greatest sling strength?
MAPP - acetylene - and propane
Tagged and removed from service.
6 5/8'(inch)
Basket

16. With a high pressure valve you should never _____ under pressure.
62.4 pounds
blow the valves for a moment
Forced convection - because the FAN forces convection!
Remove the packing

17. Which of the following methods of access to a scaffold is prohibited?
an eccentric reducer flat on top
Water
The flux is in the filler material
Climbing the cross braces.

18. Which of the following is NOT a reason to use stud bolts instead of machine bolts for bolting flanged piping joints?
Green
The stud bolt is stronger than a machine bolt of the same size and material.
Allow moisture to escape
.0361

19. Soldered joints should never be used on systems above...
Large end to smaller end to center(bull)
Material Safety Data Sheet
250 degrees
A pry bar

20. The treatment of liquids in motion is known as...
To protect the threads from rust.
In the direction of flow
Vaporization
Hydraulics

21. A guard rail system must withstand a minimum force of __________ pounds.
Body belts
After cutting
Notify response team and allow them to rescue.
200 lbs

22. What is the purpose of the oxygen and acetylene regulators?
To reduce the pressure from the cylinders to safe and workable pressures
Provide oxygen barrier - stabilize and direct the force of the arc and to gather impurities in the form of slag.
Two Hole
Globe valve

23. If a horizontal pipe connecting to the suction side of a pump requires a reducer - it should be connected with...
The same OD as the branch
In the hot water heating pumps discharge piping.
an eccentric reducer flat on top
4 to 20 milliamps

24. Which of the following constants are used when working with circles and areas?
Magnesium
3 to 15 psi
Air Bound
.01745 - 3.1416 - and .7854

25. How many 2'(inch) pipes can be supplied from a 6'(inch) header?
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
Clove hitch with a half hitch
14.7 psia
9

26. What type of expansion joint does NOT utilize mechanical movement?
1
Globe
Expansion loop.
Fuse

27. A neutral reading on the PH scale is...
Hazard prevention and control.
7.0
All position
Remove the packing

28. A Hartford loop is used for...
.707 x Travel
8 5/8'(inch)
Prevailing wind speed and direction - environmental concerns - zoning requirements
Protection for loss of water in the boiler.

29. A simple example of a lever is...
A pry bar
Tagged and removed from service.
.7854 x D squared
Purge the line when brazing

30. The sum of atmospheric and gauge pressure is known as __________ pressure.
Absolute
sewage
Clove hitch with a half hitch
On high side of the system and turns gas to liquid.

31. Use of air as a power source is known as...
Pneumatics
Prevailing wind speed and direction - environmental concerns - zoning requirements
Spiral
On low side of the system and expands liquid to low pressure gas.

32. Which of the following types of clamps are used to dampen a pipe's movement?
Spiral Wound
.707
Snubber
Yellow.. think Dee Double U is yelloWWW

33. The specific gravity of a gas is relative to the specific weight of _______________ - which has a specific gravity of one.
Cavitation
231
Air
Manometer

34. In a Hydronic heating system - units at the top of the system not heating are likely to be...
Act as a safety device to shut off the motor if the operator's foot is removed from the switch.
Guide - Anchor - Guide
Air Bound
In a pressure gauge

35. The last two digits on an E-6010 electrode specify
Before the strainer and fully open.
Pneumatics
The type of coating and current
an eccentric reducer flat on top

36. One cubic foot of water weighs?
The science of heat transfer using water.
62.4 pounds
Multiply the length of the hypotenuse of the roll and the set by 1.414
To protect the threads from rust.

37. What do the first two digits mean in E7018 electrodes?
To reduce the pressure from the cylinders to safe and workable pressures
The tensile strength of the rod in PSI times 1 -000
180
6 5/8'(inch)

38. The best knot to use when lifting pipe vertically is the...
Spring hanger
orthographic
13/16'(inch)
Clove hitch with a half hitch

39. A __________ displacement pump discharges a definite quantity of liquid for each cycle.
Absolute
Positive
supporter of combustion
Remove any paint or rust.

40. An abrasive wheel should never run faster than it...
Cavitation
maximum rated capacity
In the hot water heating pumps discharge piping.
Act as a safety device to shut off the motor if the operator's foot is removed from the switch.

41. A triple-duty valve is installed...
Flooded
In the hot water heating pumps discharge piping.
The tubing has been cleaned for oxygen service
Yellow.. think Dee Double U is yelloWWW

42. To assemble a 4 bolt flange...
.7854 x D squared
Pipe penetration
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.
Expansion loop.

43. What is typically a final control element?
2.31ft
Allow moisture to escape
Pressure rating
Valve

44. Which one of the following measures and takes action?
Controller
Spring hanger
Sch 80 Steel pipe
sewage

45. Name the three methods of transferring heat.
Conduction - convection and radiant.
Dry expansion type
7.0
foot valve

46. Which is the correct formula for the area of a circle?
Pneumatics
.7854 x D squared
Alloying
near the middle of the jaws

47. OD for 2'(inch)

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48. On a centrifugal pump what is rotated by the motor?
Strainer
tangent 1/2 angle x radius
The impeller
handle will bend

49. A tag line should be used on a crane lift...
180
Arrange a wire rope clamp so that the dead end has the U bolts
The flux burns and the joint becomes ineffective
ALWAYS

50. To order a reducing tee you should specify the size by...
14.7psia - always in PSI-A
Condensate pump size
Large end to smaller end to center(bull)
None