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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. Formula for a cubic foot of an unknown substances weight?
Fuel - Heat - Oxygen
Saturated
MAPP - acetylene - and propane
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

2. When selecting a hanger for a piping system you should consider...
Bight - running end and standing part
14'(inch)
radius squared times PI
The system temperature - thermal and dynamic movement of the pipe and vibration.

3. A simple example of a lever is...
A pry bar
The system temperature - thermal and dynamic movement of the pipe and vibration.
Remote bulb
Absolute

4. Why is it necessary to use roller hangers?
Raise the load
2 3/8'(inch)
To allow for thermal movement
an eccentric reducer flat on top

5. The amount of heat necessary bring about a change of state from solid to liquid or liquid to gas is known as _______________ heat.
Latent
Choked position
8 5/8'(inch)
62.4

6. What does the evaporator do?
Quarter
Yellow.. think Dee Double U is yelloWWW
Ammonia
On low side of the system and expands liquid to low pressure gas.

7. A cooling tower must have a ________ or be open-site.
1.25'(inch)
Yellow.. think Dee Double U is yelloWWW
Backflow preventer
Sch 80 Steel pipe

8. What is typically a final control element?
Before the strainer and fully open.
.0361
Two Hole
Valve

9. What is Hydronics?
.075lbs
The science of heat transfer using water.
14.7psia - always in PSI-A
When a large volume of condensate is generated

10. One cubic foot of water weighs?
62.4 pounds
None
pi * radius squared
bowline on a bight

11. What is the maximum pressure for an acetylene hose?
an eccentric reducer flat on top
Ground Fault Circuit Interrupter
Two Hole
15 PSI

12. Where should the pressure enter a globe valve?
Schedule 10
Blue... think b-LLLLue
Depends on the desired action if the disc or plug becomes detatched from the stem. (Fail open or Fail closed)
Point thumb up

13. To determine the travel for a 45 degree rolling offset you would...
the type of coating and current
Multiply the length of the hypotenuse of the roll and the set by 1.414
blow the valves for a moment
3.1416

14. What causes water hammer?
Insufficient condensate drainage
Magnesium
protect worker safety and health
Mechanical return is used.

15. The pipe that connects the steam header to the boiler return connection is the...
1.5
Dog Everything
Equalizing line
Body belts

16. An increase in pressure will cause the boiling point of water to ________...
7.0
In the direction of flow
Increase
1.25'(inch)

17. One atmosphere is equal to...
Fuse
Backflow preventer
14.7psia - always in PSI-A
.135 cu ft

18. What has the largest effect on pump alignment?
.135 cu ft
Pipe strain
Sch 40
Controller

19. Steam in contact with the water it has been generated from is known as ________________ steam.
blow the valves for a moment
Basket
To protect the threads from rust.
Saturated

20. When a pipe size is decreased by half - the carrying capacity of the pipe decreases by...
Flux
7.0
Quarter
Water

21. A guard rail system must withstand a minimum force of __________ pounds.
All position
200 lbs
Air Bound
The type of coating and current

22. The amount of heat it takes to raise one pound of water one degree Fahrenheit is known as a...
BUT
dry expansion
(Total Height - Elevation) * .433 = psig
.707

23. Capillary action is used in...
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
30 Degrees
(Total Height - Elevation) * .433 = psig
Solder joints

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

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25. The treatment of liquids in motion is known as...
the employer
15 PSI
Hydraulics
Primer

26. A condensate receiver is used when...
When a large volume of condensate is generated
Remote bulb
Its cheaper!
Ammonia

27. What is the best gasket to use on a flanged joint on medium pressure steam?
25 feet
Spiral Wound
13/16'(inch)
The flow of a liquid into a small space

28. If the architectural scale is 1/4'(inch) equals 1 foot - the ratio would be...
None
(Total Height - Elevation) * .433 = psig
1.25'(inch)
1:48 - because 1/4 of an inch is 1/48th of a foot

29. Steam condensate lines should be installed on...
4 to 20 milliamps
Roller hangers
In the direction of flow
no valves permitted

30. Which component in a closed control loop is the primary element?
1
Sensor
Arrange a wire rope clamp so that the dead end has the U bolts
All position

31. Calculate head pressure in a section of vertical pipe?
Height * .433 = psig
radius squared times PI
BUT
soft tempered

32. Which type of orifice plate is designed to measure flow of liquids containing solids?
The flux burns and the joint becomes ineffective
2 3/8'(inch)
Segmental
Spring hanger

33. What is the formula to figure take off on a 45 degree elbow?

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34. A concentric reducer could be used to connect to a horizontal pump _______________ line.
discharge
15 PSI
Hazard prevention and control.
The Evaporator

35. A device that mechanically attaches to the side of a flange on a beam is called a...
Beam clamp
Act as a safety device to shut off the motor if the operator's foot is removed from the switch.
Type K
Never

36. To figure the end-to-end measurement of a piece of pipe when the end-to-end center measurement is known the...
Pressure Rating
1 foot
take-off must be subtracted from the end-to-center measurement.
Discharge

37. How much does 1 cubic foot of air weigh?
25' from any worker
.075lbs
10 feet
Immersion sensor

38. With a high pressure valve you should never _____ under pressure.
Blue... think b-LLLLue
bowline on a bight
Ball joint - Bellows Joint and Packed Joint
Remove the packing

39. How often should the atmosphere be tested in a confined space?
Depends on the desired action if the disc or plug becomes detatched from the stem. (Fail open or Fail closed)
Neutral
Continuously
Provide oxygen barrier - stabilize and direct the force of the arc and to gather impurities in the form of slag.

40. A system which the refrigerant is in the shell and cools the fluid in the tubes is...
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.
compression
Flooded
Forced convection - because the FAN forces convection!

41. Steam supply using parallel flow is...
ALWAYS
62.4
In a pressure gauge
steam and condensate flowing in the same direction

42. Zinc chills or metal fume fever are caused from welding on __________ steel.
Spiral
.491lbs
galvanized
Pressuretrol

43. When a soldered joint is overheated...
The flux burns and the joint becomes ineffective
Spiral Wound
Globe valve
In the hot water heating pumps discharge piping.

44. What is the sum of all angles in a triangle?
180
Increase in friction
Eccentric reducer (flat on top)
1 foot

45. Standard atmospheric pressure at sea level is _____...
To reduce the pressure from the cylinders to safe and workable pressures
14.7 psia
.01745 - 3.1416 - and .7854
6 5/8'(inch)

46. What type of expansion joint utilizes mechanical movement?
On high side of the system and turns gas to liquid.
Ball joint - Bellows Joint and Packed Joint
Never
Down Stream

47. Which of the following is the decimal equivalent of 5/8'(inch)
falls
Equalizing line
.625
After cutting

48. The only entity that has the responsibility and authority to appoint the competent person is...
1
the employer
Beam clamp
.433psi

49. The density of 1 cubic inch of Mercury is...
Magnesium
.491lbs
4 1/2'(inch)
tangent 1/2 angle x radius

50. Annealing copper...
Softens it
.625
Insure progressively tighter fit
2 and 1