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. Although the model codes usually say the melting point of a brazing alloy must be at least 1000º F - the technical temperature specified by the Copper Development Association and the American Welding Society is __________ degrees Fahrenheit.
The temperature that the joints are made - the flux and temperatures of the system
.7854 x D squared
Yellow.. think Dee Double U is yelloWWW
840


2. To sense the temperature remotely from the thermostat location you would use...
foot valve
Remote bulb
30 Degrees
13/16'(inch)


3. A valve on the suction side of the pump should be...
To chemically prepare the pieces for soldering
supporter of combustion
Before the strainer and fully open.
15 PSI


4. OD for 2'(inch)

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5. The amount of heat it takes to raise one pound of water one degree Fahrenheit is known as a...
1:48 - because 1/4 of an inch is 1/48th of a foot
BUT
Up and Down
Ball joint - Bellows Joint and Packed Joint


6. What does the crane signal with the index finger pointed forward in a swirling motion signal?
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)
14.7psia - always in PSI-A
Raise the load
1


7. What are the three types of steam traps?
Erratic readings
Thermostatic - Thermodynamic and Mechanical
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.
To protect the threads from rust.


8. The face to center measurement of any welded angle fitting equals...
Ammonia
Too fast of a travel rate
8.33 pounds
tangent 1/2 angle x radius


9. A vent is not needed on a condensate receiver when...
Mechanical return is used.
Expansion loop.
4 times
The pump creates a differential in pressure that moves the water.


10. .433 psig is equal to how high of a water column?
Valve
1 foot
Coating
MAPP - acetylene - and propane


11. Which way should the bevel face on an orifice plate?
OD
Down Stream
protect worker safety and health
.01745 - 3.1416 - and .7854


12. What should the outside attendant do to rescue a worker who shows physiological effects of exposure in a confined space?
To chemically prepare the pieces for soldering
Notify response team and allow them to rescue.
Magnesium
The type of coating and current


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

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14. What is capillary action?
The flow of a liquid into a small space
steam and condensate flowing in the same direction
Air Bound
1:48 - because 1/4 of an inch is 1/48th of a foot


15. Factors in considering the site selection for a new cooling tower.
Prevailing wind speed and direction - environmental concerns - zoning requirements
Expansion Device
Pipe strain
.075lbs


16. How much does 1 cubic foot of air weigh?
Ground Fault Circuit Interrupter
Strainer
radius squared times PI
.075lbs


17. The pipe that connects the steam header to the boiler return connection is the...
Equalizing line
To protect the threads from rust.
supporter of combustion
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


18. What does the G stand for in the 2G - 5G and 6G weld positions?
Choked position
(Total Height - Elevation) * .433 = psig
In the direction of flow
Groove


19. The color code for DWV copper is...
Yellow.. think Dee Double U is yelloWWW
To chemically prepare the pieces for soldering
Softener
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)


20. Theoretically - a pump can raise water by suction approximately __________ feet vertically.
Hydrostatics
sewage
4 to 20 milliamps
34 feet


21. When should a person designated as an attendant attempt to rescue a worker that is trapped?
180
.491lbs
Never
When a large volume of condensate is generated


22. When a pipe size is decreased by half - the carrying capacity of the pipe decreases by...
.0361
231
Guide - Anchor - Guide
Quarter


23. Which of the following has the largest inside diameter?
15 PSI
maximum rated capacity
Schedule 10
Fusion


24. Zinc chills or metal fume fever are caused from welding on __________ steel.
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)
Fuel - Heat - Oxygen
an eccentric reducer flat on top
galvanized


25. OD for 5'(inch)

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26. A neutral reading on the PH scale is...
the core
7.0
Multiply the length of the hypotenuse of the roll and the set by 1.414
34 feet


27. To determine the travel for a 45 degree rolling offset you would...
Purge the line when brazing
Multiply the length of the hypotenuse of the roll and the set by 1.414
maximum rated capacity
Spiral Wound


28. A bushing is NOT a good replacement for a reducer because...
Water
BCuP - Stands for Brazed Copper Phosphorus
Its cheaper!
The flux is in the filler material


29. OD for 8'(inch)

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30. What effect does the fill pressure (static) have on a closed loop plumbing system?
Too fast of a travel rate
None
To protect the threads from rust.
dry expansion


31. A vertical line in an isometric drawing represents...
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)
The science of heat transfer using water.
Up and Down
Backflow preventer


32. When brazing for medical gas or refrigeration always...
Purge the line when brazing
The flux is in the filler material
Bight - running end and standing part
.491lbs


33. The sum of atmospheric and gauge pressure is known as __________ pressure.
Flat and horizontal positions
Absolute
Increase
5 9/16'(inch)


34. The anode rod used in a hot water heater to protect it from corrosion is made of...
Neutral
Magnesium
Blue... think b-LLLLue
7.48


35. A fan coil uses ______ to distribute heating or cooling to the space.
Globe valve
Forced convection - because the FAN forces convection!
Fuse
Tagged and removed from service.


36. When a liquid changes immediately to a vapor it is called...
Mechanical return is used.
Flashing
Down Stream
Red.. think M&M is RED


37. The letters MSDS stand for...
Material Safety Data Sheet
The flow of a liquid into a small space
Water
.707 x Travel


38. A float and thermostatic trap is a...
Act as a safety device to shut off the motor if the operator's foot is removed from the switch.
Mechanical/Thermostatic
Coating
Crimson... think aCRimson


39. The type of drawing that most closely resembles an object as the eye would see it is referred to as a/an __________ drawing.
foot valve
Flashing
true isometric
hydrometer


40. How far should a copper tube be inserted into a cup for a brazed joint?
Flooded
Increase
maximum rated capacity
All the way to the shoulder


41. What is installed after the isolation valve and before the trap union on a standard trap assembly?
Strainer
blow the valves for a moment
After cutting
steam and condensate flowing in the same direction


42. A tag line should be used on a crane lift...
galvanized
true isometric
Valve
ALWAYS


43. Which one of the following alloys does not require flux when brazing copper to copper joints?
All the way to the shoulder
BCuP - Stands for Brazed Copper Phosphorus
In a pressure gauge
Immersion sensor


44. When a soldered joint is overheated...
return fitting
Never
The flux burns and the joint becomes ineffective
When a large volume of condensate is generated


45. What is the purpose for a weep hole in a saddle pad?
the employer
Allow moisture to escape
1728
Primer


46. OD for 3'(inch)

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47. If the travel of a 45 degree offset is known - what formula can be used to find the advance?
Strainer
Tagged and removed from service.
.707 x Travel
75 degrees - also 4 to 1


48. The device that controls the pressure in a low pressure steam boiler is called a...
Eccentric reducer (flat on top)
Guide - Anchor - Guide
Yellow.. think Dee Double U is yelloWWW
Pressuretrol


49. Which of the following is NOT a reason to use stud bolts instead of machine bolts for bolting flanged piping joints?
piping
Air Bound
62.4lbs
The stud bolt is stronger than a machine bolt of the same size and material.


50. When arranging weld coupons for testing position 6G...
15 Feet
7.0
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)
Axis of pipe should be on a 45 degree