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 is the standard for an electronic signal?
Type K
4 to 20 milliamps
set point
steam and condensate flowing in the same direction


2. What is the weakest part of a chain hoist?
lower hook
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.
.7854 x D squared
In the hot water heating pumps discharge piping.


3. What is the specific gravity of water?
Before the strainer and fully open.
Magnesium
Waterlogged
1


4. Which is the correct formula for the area of a circle?
13/16'(inch)
.7854 x D squared
8.33 pounds
1/2 BTU


5. The letters MSDS stand for...
Controller
Material Safety Data Sheet
Manometer
The pump creates a differential in pressure that moves the water.


6. To view the west elevation the viewer's perspective is from the...
West of the building
15 Feet
100% of the rated capacity
The flux burns and the joint becomes ineffective


7. In a Hydronic heating system - units at the top of the system not heating are likely to be...
Air Bound
3.1416
Primer
MAPP - acetylene - and propane


8. Which type of orifice plate is designed to measure flow of liquids containing solids?
Segmental
Pressure Rating
14.7 psia
Eccentric reducers - flat on top


9. Which of the following is NOT a reason for using cutting oil when threading pipe?
The science of heat transfer using water.
5 9/16'(inch)
Remote bulb
To protect the threads from rust.


10. The color code for type K copper is...
Level the 90 in horizontal position determine inside arc - backside arc and face to center dimensions for 60 degree elbow - mark and cut
Green... think KKelly GREEN
Pipe strain
Blue... think b-LLLLue


11. What is the welding position 3 - on the electrode mean?
Purge the line when brazing
Air Bound
Flat position only
Schedule 10


12. Condensate lines should be pitched...
To reduce the pressure from the cylinders to safe and workable pressures
BCuP - Stands for Brazed Copper Phosphorus
Solder joints
In the direction of flow


13. OD for 4'(inch)

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14. An oil separator is required on systems using...
Pressuretrol
Saturated
Ammonia
Increase in friction


15. There are __________ cubic inches in a gallon.
25' from any worker
Allow moisture to escape
Axis of pipe should be on a 45 degree
231


16. What would be the result of an incorrectly installed orifice plate?
return fitting
Erratic readings
Purge the line when brazing
Tagged and removed from service.


17. A condensate receiver is used when...
When a large volume of condensate is generated
In the hot water heating pumps discharge piping.
Softens it
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 causes water hammer?
Eccentric reducer (flat on top)
Mechanical/Thermostatic
The flux is in the filler material
Insufficient condensate drainage


19. Where should the pressure enter a globe valve?
Vaporization
Depends on the desired action if the disc or plug becomes detatched from the stem. (Fail open or Fail closed)
foot valve
protect worker safety and health


20. What does the evaporator do?
On low side of the system and expands liquid to low pressure gas.
Fusion
Insert pipe into fitting and turn 1/4 turn and hold
Air Bound


21. How far should a copper tube be inserted into a cup for a brazed joint?
All the way to the shoulder
Too fast of a travel rate
Never
Waterlogged


22. The anode rod used in a hot water heater to protect it from corrosion is made of...
an eccentric reducer flat on top
Magnesium
Ground Fault Circuit Interrupter
Mechanical/Thermostatic


23. Ladders with visible defects - such as broken rungs - cracked side rails - or broken steps must be...
Ammonia
Expansion Device
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
Tagged and removed from service.


24. OD for 6'(inch)

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25. An ejector pump is typically used to pump __________.
8 5/8'(inch)
sewage
Raise the load
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


26. Steam supply using parallel flow is...
MAPP - acetylene - and propane
steam and condensate flowing in the same direction
When a large volume of condensate is generated
Provide oxygen barrier - stabilize and direct the force of the arc and to gather impurities in the form of slag.


27. What type of Copper tubing is not identified by color on the tubing itself?
maximum rated capacity
soft tempered
Hydrostatic
1.25'(inch)


28. Which of the following constants are used when working with circles and areas?
.01745 - 3.1416 - and .7854
an eccentric reducer flat on top
Hazard prevention and control.
Allow moisture to escape


29. What type of expansion joint utilizes mechanical movement?
Ball joint - Bellows Joint and Packed Joint
Fuel - Heat - Oxygen
Anchors
Solder joints


30. Which of the elements of a wire rope aid in absorbing '(inch)Shock Loads'(inch)?
2.31ft
Axis of pipe should be on a 45 degree
Down Stream
the core


31. Which of the following is sometimes used as a shielding gas in the GTAW process?
Argon
100% of the rated capacity
Discharge
Green... think KKelly GREEN


32. OD for 2'(inch)

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33. If the architectural scale is 1/4'(inch) equals 1 foot - the ratio would be...
discharge
1:48 - because 1/4 of an inch is 1/48th of a foot
dry expansion
near the middle of the jaws


34. To order a reducing tee you should specify the size by...
Large end to smaller end to center(bull)
The tubing has been cleaned for oxygen service
Insure progressively tighter fit
3 1/2'(inch)


35. To sense the temperature remotely from the thermostat location you would use...
200 lbs
Remote bulb
Pressure Rating
To protect the threads from rust.


36. What occurs in a flash tank?
Large volumes of condensate flash back to liquid in the tank so it removes trapped steam from the condensate.
Axis of pipe should be on a 45 degree
None
.075lbs


37. When ordering ACR copper specify the size by...
dry expansion
sewage
OD
Allow moisture to escape


38. What causes pressure drop?
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.
pi * radius squared
Ammonia
Increase in friction


39. When a pipe size is decreased by half - the carrying capacity of the pipe decreases by...
BCuP - Stands for Brazed Copper Phosphorus
2.31ft
Up and Down
Quarter


40. A gallon of water weighs...
near the middle of the jaws
Basket
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)
8.33lbs


41. The change in state from solid to liquid is known as...
1.25'(inch)
Increase the pressure when the temperature increases
Fusion
10 feet


42. The device that controls the pressure in a low pressure steam boiler is called a...
15 Feet
To provide movement cause from a change in temperature
Pressuretrol
Hydrostatics


43. What is used to soften PVC and remove the gloss?
Fuel - Heat - Oxygen
Primer
Level the 90 in horizontal position determine inside arc - backside arc and face to center dimensions for 60 degree elbow - mark and cut
In the direction of flow


44. An exit from a trench should be no more than...

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45. When selecting a hanger for a piping system you should consider...
When a large volume of condensate is generated
The system temperature - thermal and dynamic movement of the pipe and vibration.
All position
Body belts


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

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47. A sling is weakest in which position?
The Evaporator
Choked position
Saturated
true isometric


48. What size hole should be cut into a main to saddle ON a smaller pipe?
Spring hanger
Flux
34 feet
The same ID as the branch


49. Which way should the bevel face on an orifice plate?
Pressure Rating
Down Stream
maximum rated capacity
Act as a safety device to shut off the motor if the operator's foot is removed from the switch.


50. In a piping installation allowing for expansion in two directions - how should the anchor(s) and guide(s) be positioned relative to each other?
orthographic
Yellow.. think Dee Double U is yelloWWW
Blue... think b-LLLLue
Guide - Anchor - Guide