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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. Which of the following is NOT a reason to use stud bolts instead of machine bolts for bolting flanged piping joints?
Absolute
Its cheaper!
The stud bolt is stronger than a machine bolt of the same size and material.
Remote bulb

2. Horizontal steam supply piping should be reduced in size by using...
On low side of the system and expands liquid to low pressure gas.
Eccentric reducer (flat on top)
handle will bend
pi * radius squared

3. A concentric reducer could be used to connect to a horizontal pump _______________ line.
Crimson... think aCRimson
The type of coating and current
discharge
steam and condensate flowing in the same direction

4. What is the best valve for throttling?
Quarter
Down Stream
foot valve
Globe

5. The combining of more than one metal is...
Valve
Alloying
1:48 - because 1/4 of an inch is 1/48th of a foot
pi * radius squared

6. A neutral reading on the PH scale is...
the core
3 1/2'(inch)
Blue... think b-LLLLue
7.0

7. A direct acting thermostat is used to...
Vaporization
14'(inch)
Increase the pressure when the temperature increases
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.

8. The last two digits on an E-6010 electrode specify...
The same ID as the branch
Arrange a wire rope clamp so that the dead end has the U bolts
MAPP - acetylene - and propane
the type of coating and current

9. .433 psig is equal to how high of a water column?
Alloying
Green... think KKelly GREEN
1 foot
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.

10. Formula for area of a circle?
pi * radius squared
Globe
Large volumes of condensate flash back to liquid in the tank so it removes trapped steam from the condensate.
Erratic readings

11. The anode rod used in a hot water heater to protect it from corrosion is made of...
Quarter
Loosen the far bolts first
no valves permitted
Magnesium

12. A bushing is NOT a good replacement for a reducer because...
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
sewage
dry expansion
Its cheaper!

13. For an extension ladder to be at the correct angle for safe use on a working surface 20ft high. The ladder must be located how many feet away from the base?
Flashing
Saturated
Steam
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.

14. The smallest nominal size DWV copper tube is...

15. To order a reducing tee you should specify the size by...
Large end to smaller end to center(bull)
The flow of a liquid into a small space
Insufficient condensate drainage
Absolute

16. All of the following are process control elements EXCEPT...
On high side of the system and turns gas to liquid.
blow the valves for a moment
piping
.075lbs

17. Which type of orifice plate is designed to measure flow of liquids containing solids?
Choked position
Segmental
the employer
protect worker safety and health

18. Since _______________ is virtually incompressible - pressure has little effect on its volume.
Backflow preventer
take-off must be subtracted from the end-to-center measurement.
Water
7.48

19. What is the purpose of the oxygen and acetylene regulators?
Large volumes of condensate flash back to liquid in the tank so it removes trapped steam from the condensate.
To reduce the pressure from the cylinders to safe and workable pressures
Insert pipe into fitting and turn 1/4 turn and hold
NEVER!

20. What is the sum of all angles in a triangle?
180
1/2 BTU
1 5/16'(inch)
Air

21. OD for 4'(inch)

22. Where should the pressure enter a globe valve?
Neutral
Depends on the desired action if the disc or plug becomes detatched from the stem. (Fail open or Fail closed)
Clove hitch with a half hitch
Increase

23. What does GFCI stand for?
Its cheaper!
The same OD as the branch
Air
Ground Fault Circuit Interrupter

24. What does the evaporator do?
Axis of pipe should be on a 45 degree
On low side of the system and expands liquid to low pressure gas.
Increase
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

25. To assemble a 4 bolt flange...
The tensile strength of the rod in PSI times 1 -000
Neutral
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.
Flux

26. A single line drawing of a piping system represents the...
Mechanical/Thermostatic
Center of the pipe
discharge
handle will bend

27. 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.
8.33 pounds
840
Center of the pipe
Allow moisture to escape

28. One cubic foot of water weighs?
62.4 pounds
The tensile strength of the rod in PSI times 1 -000
Climbing the cross braces.
Spiral Wound

29. An ejector pump is typically used to pump __________.
Axis of pipe should be on a 45 degree
Point thumb up
sewage
Its cheaper!

30. What are the main differences between soldering and brazing?
The temperature that the joints are made - the flux and temperatures of the system
Remove the packing
Increase
Expansion Device

31. The proper way to extinguish a fire is to...
Pipe penetration
Air Bound
Point at the base and sweep the base with the extinguisher
Green

32. A tag line should be used on a crane lift...
Flooded
ALWAYS
Purge the line when brazing
5 9/16'(inch)

33. A float and thermostatic trap is a...
Flooded
4 times
Mechanical/Thermostatic
galvanized

34. Use of air as a power source is known as...
The system temperature - thermal and dynamic movement of the pipe and vibration.
Sch 80 Steel pipe
MAPP - acetylene - and propane
Pneumatics

35. To determine the set on a 45 degree offset you would multiply the travel by...
Up and Down
When a large volume of condensate is generated
Red.. think M&M is RED
.707

36. One foot of water exerts...
The tubing has been cleaned for oxygen service
On high side of the system and turns gas to liquid.
.433psi
Segmental

37. A system which the refrigerant is in the shell and cools the fluid in the tubes is...
Clean all surfaces
Flooded
falls
Body belts

38. What is the standard pressure range for a pneumatic signal?
Insufficient condensate drainage
an eccentric reducer flat on top
3 to 15 psi
Ball joint - Bellows Joint and Packed Joint

39. Where should the high pressure condensate be piped to before entering the receiver?
Flash Tank
Softener
hydrometer
BUT

40. The color code for type K copper is...
Green... think KKelly GREEN
the employer
an eccentric reducer flat on top
Flat position only

41. What type of flame should be used to cut carbon steel?
Neutral
Erratic readings
Controller
The tensile strength of the rod in PSI times 1 -000

42. What is the best gasket to use on a flanged joint on medium pressure steam?
Spiral Wound
West of the building
Body belts
the type of coating and current

43. On a centrifugal pump what is rotated by the motor?
36'(inch)
The impeller
Sch 40
Bumping

44. In a refrigeration system a condensable gas is...
36'(inch)
Bight - running end and standing part
Yellow.. think Dee Double U is yelloWWW
Ammonia

45. What is the formula to calculate thermal expansion?

46. When a liquid changes immediately to a vapor it is called...
3.1416
Flashing
Raise the load
The tensile strength of the rod in PSI times 1 -000

47. A fan coil uses ______ to distribute heating or cooling to the space.
Alloying
Forced convection - because the FAN forces convection!
Eccentric reducer (flat on top)
Flash Tank

48. Why is it necessary to use flux on a soldered joint?
.491lbs
Red.. think M&M is RED
Two Hole
To chemically prepare the pieces for soldering

49. In a typical residential air conditioning system - the evaporator is of the _______________ type - where the liquid refrigerant should be totally vaporized before it reaches the outlet of the evaporator.
To protect the threads from rust.
Dry expansion type
Pressure Rating
The tensile strength of the rod in PSI times 1 -000

50. The amount of heat it takes to raise one pound of water one degree Fahrenheit is known as a...
discharge
Notify response team and allow them to rescue.
Hazard prevention and control.
BUT