Test your basic knowledge |

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 typically a final control element?
13/16'(inch)
.0361
Valve
Globe

2. What causes water hammer?
Insufficient condensate drainage
The Evaporator
Ball joint - Bellows Joint and Packed Joint
Cavitation

3. Steam supply using parallel flow is...
Eccentric reducers - flat on top
4 to 20 milliamps
steam and condensate flowing in the same direction
9

4. OD for 2'(inch)

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5. The change in state from a liquid to gas is known as...
Bight - running end and standing part
Primer
Vaporization
Ball joint - Bellows Joint and Packed Joint

6. To stop all crane movement the ______ signal should be used.
Yellow.. think Dee Double U is yelloWWW
Dog Everything
Too fast of a travel rate
Thermostatic - Thermodynamic and Mechanical

7. The device that controls the pressure in a low pressure steam boiler is called a...
On high side of the system and turns gas to liquid.
3 1/2'(inch)
231
Pressuretrol

8. Which of the following types of clamps are used to dampen a pipe's movement?
.01745 - 3.1416 - and .7854
Snubber
To reduce the pressure from the cylinders to safe and workable pressures
Fuel - Heat - Oxygen

9. Zinc chills or metal fume fever are caused from welding on __________ steel.
Capillary action
set point
galvanized
Green

10. Theoretically - a pump can raise water by suction approximately __________ feet vertically.
34 feet
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.
On low side of the system and expands liquid to low pressure gas.
The tensile strength of the rod in PSI times 1 -000

11. The color code for type M copper is...
Red.. think M&M is RED
Guide - Anchor - Guide
The temperature that the joints are made - the flux and temperatures of the system
.7854 x D squared

12. One pound of water pressure is equal to...
2.31ft
Increase in friction
protect worker safety and health
Pneumatics

13. All of the following are process control elements EXCEPT...
Blue... think b-LLLLue
piping
Climbing the cross braces.
Axis of pipe should be on a 45 degree

14. What is the standard pressure range for a pneumatic signal?
3 to 15 psi
Arrange a wire rope clamp so that the dead end has the U bolts
Spiral Wound
231

15. When a loop is needed at any point between ends of a rope - the proper knot to tie is the...
Multiply the length of the hypotenuse of the roll and the set by 1.414
dry expansion
.075lbs
bowline on a bight

16. A valve on the suction side of the pump should be...
Before the strainer and fully open.
Sch 40
25 feet
Pressuretrol

17. When a flux joint is overheated it will not...
8.33 pounds
Fuse
pi * radius squared
Clove hitch with a half hitch

18. A direct acting thermostat is used to...
Increase the pressure when the temperature increases
Hydrostatics
compression
Immersion sensor

19. A _______________ reamer should NOT be used with power operated pipe threading equipment
Valve
Spiral
15 Feet
Solder joints

20. The color code for type K copper is...
Erratic readings
A pry bar
Green... think KKelly GREEN
.135 cu ft

21. What is the minimum thickness for threading PVC pipe?
1 foot
.0361
Valve
Sch 40

22. What is the maximum pressure for an acetylene hose?
Fusion
1:48 - because 1/4 of an inch is 1/48th of a foot
With the weld at a 45 degree angle
15 PSI

23. A guard rail system must withstand a minimum force of __________ pounds.
Ammonia
8.33 pounds
MAPP - acetylene - and propane
200 lbs

24. How often should the atmosphere be tested in a confined space?
near the middle of the jaws
14.7 psia
set point
Continuously

25. The change in state from solid to liquid is known as...
pi * radius squared
Bight - running end and standing part
Fusion
falls

26. When is it safe to remove the old packing from a valve that is under pressure?
.7854 x D squared
galvanized
To reduce the pressure from the cylinders to safe and workable pressures
NEVER!

27. One foot of water exerts...
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.
Pressure rating
.433psi
Saturated

28. The color code for type L copper is...
Too fast of a travel rate
Blue... think b-LLLLue
Globe valve
Level the 90 in horizontal position determine inside arc - backside arc and face to center dimensions for 60 degree elbow - mark and cut

29. The specific weight of air and water is...
1
200 lbs
(Total Height - Elevation) * .433 = psig
return fitting

30. OD for 3'(inch)

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31. To view the west elevation the viewer's perspective is from the...
near the middle of the jaws
West of the building
soft tempered
When a large volume of condensate is generated

32. If the travel of a 45 degree offset is known - what formula can be used to find the advance?
Ball joint - Bellows Joint and Packed Joint
NEVER!
.707 x Travel
the employer

33. The most that a crane should be loaded is...
BUT
In the direction of flow
100% of the rated capacity
Insure progressively tighter fit

34. Which one of the following alloys does not require flux when brazing copper to copper joints?
Expansion loop.
Ground Fault Circuit Interrupter
BCuP - Stands for Brazed Copper Phosphorus
On high side of the system and turns gas to liquid.

35. What is the formula to figure the area of a circle?
Neutral
return fitting
radius squared times PI
36'(inch)

36. Where is a bourdon tube found?
Backflow preventer
Raise the load
In a pressure gauge
bowline on a bight

37. 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.
Argon
ALWAYS
Dry expansion type
the core

38. What type of flame should be used to cut carbon steel?
To protect the threads from rust.
4 1/2'(inch)
1.25'(inch)
Neutral

39. The amount of heat it takes to raise one pound of water one degree Fahrenheit is known as a...
Argon
MAPP - acetylene - and propane
BUT
4 1/2'(inch)

40. What is the purpose of the expansion joint in a steam system?
the core
Hydrostatic
Eccentric reducers - flat on top
To provide movement cause from a change in temperature

41. What is the minimum safe clearance between cranes and energized power lines operating at 50kV or below?
10 feet
9
The type of coating and current
The flow of a liquid into a small space

42. What size hole should be cut into a main to saddle ON a smaller pipe?
The stud bolt is stronger than a machine bolt of the same size and material.
Neutral
The same ID as the branch
Bight - running end and standing part

43. If a pump is operating under static suction lift conditions - a __________ may be installed in the suction line to avoid losing the pump's prime each time the pump shuts off.
foot valve
All position
To chemically prepare the pieces for soldering
Hydrostatics

44. To determine the set on a 45 degree offset you would multiply the travel by...
Remove the packing
falls
.707
Pressure Rating

45. What does the term '(inch)never saddle a dead horse'(inch) mean?
Arrange a wire rope clamp so that the dead end has the U bolts
MAPP - acetylene - and propane
.625
Ammonia

46. The specific weight of mercury is...
1.25'(inch)
Before the strainer and fully open.
.0361
62.4

47. Which of the following is NOT a reason for using cutting oil when threading pipe?
Beam clamp
Eccentric reducer (flat on top)
Continuously
To protect the threads from rust.

48. The symbol for pi is equivalent to...
Above the main
Spiral Wound
3.1416
Coating

49. An oil separator is required on systems using...
14'(inch)
13/16'(inch)
Spiral
Ammonia

50. How far should a copper tube be inserted into a cup for a brazed joint?
Green
.01745 - 3.1416 - and .7854
All the way to the shoulder
true isometric