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Plumbing Certification

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Answer 50 questions in 15 minutes.
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Match each statement with the correct term.
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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 is the correct formula for the area of a circle?
discharge
30 Degrees
1
.7854 x D squared

2. Theoretically - a pump can raise water by suction approximately __________ feet vertically.
34 feet
Pressure Rating
Climbing the cross braces.
The science of heat transfer using water.

3. The type of drawing that most closely resembles an object as the eye would see it is referred to as a/an __________ drawing.
blow the valves for a moment
The same OD as the branch
Its cheaper!
true isometric

4. What type of sensor is directly in the process stream?
Dry expansion type
1
1 foot
Immersion sensor

5. What is on the low side of the vapor compression cycle?
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
Magnesium
The Evaporator
10 feet

6. A simple example of a lever is...
The tensile strength of the rod in PSI times 1 -000
A pry bar
pi * radius squared
Air

7. Before attaching regulators to an oxygen cylinder...
the employer
foot valve
blow the valves for a moment
231

8. What type of expansion joint utilizes mechanical movement?
Up and Down
The tensile strength of the rod in PSI times 1 -000
Ball joint - Bellows Joint and Packed Joint
7.48

9. The function of a steam trap is to prevent the flow of ________________ - while allowing condensate and non-condensable gases to pass through.
Ammonia
Steam
The tubing has been cleaned for oxygen service
Ammonia

10. The proper way to extinguish a fire is to...
true isometric
4 to 20 milliamps
Coating
Point at the base and sweep the base with the extinguisher

11. When a pipe size is decreased by half - the carrying capacity of the pipe decreases by...
ALWAYS
Remove any paint or rust.
Quarter
Cavitation

12. A schematic drawing is...
Not to scale - does not show locations of equipment. It shows pipe size and flow.
10 feet
Clove hitch with a half hitch
1.25'(inch)

13. The last two digits on an E-6010 electrode specify...
Air
MAPP - acetylene - and propane
.01745 - 3.1416 - and .7854
the type of coating and current

14. The symbol for pi is equivalent to...
2.31ft
MAPP - acetylene - and propane
3.1416
The type of coating and current

15. Which component in a closed control loop is the primary element?
Sensor
The same ID as the branch
7.0
zinc

16. A sling is weakest in which position?
Vaporization
Snubber
Choked position
To protect the threads from rust.

17. A float and thermostatic trap is a...
Sensor
Mechanical/Thermostatic
Protection for loss of water in the boiler.
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.

18. What is installed after the isolation valve and before the trap union on a standard trap assembly?
Strainer
Blue... think b-LLLLue
Spiral
Ball joint - Bellows Joint and Packed Joint

19. Use of air as a power source is known as...
.7854 x D squared
The science of heat transfer using water.
In the hot water heating pumps discharge piping.
Pneumatics

20. To assemble a 4 bolt flange...
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)
The flux burns and the joint becomes ineffective
BCuP - Stands for Brazed Copper Phosphorus
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.

21. A guard rail system must withstand a minimum force of __________ pounds.
In the hot water heating pumps discharge piping.
.7854 x D squared
200 lbs
62.4lbs

22. What occurs in a flash tank?
steel to copper joints
Condensate pump size
1.5
Large volumes of condensate flash back to liquid in the tank so it removes trapped steam from the condensate.

23. One foot of water exerts...
.433psi
pi * radius squared
Before the strainer and fully open.
take-off must be subtracted from the end-to-center measurement.

24. The amount of heat it takes to raise one pound of water one degree Fahrenheit is known as a...
Schedule 10
The tubing has been cleaned for oxygen service
BUT
Depends on the desired action if the disc or plug becomes detatched from the stem. (Fail open or Fail closed)

25. .433 psig is equal to how high of a water column?
1 foot
1:48 - because 1/4 of an inch is 1/48th of a foot
Pipe strain
To reduce the pressure from the cylinders to safe and workable pressures

26. When a cranes signaler's hand is pointed up with his finger moving in a circle it means to...
In a pressure gauge
.625
dry expansion
Raise the load

27. Steam in contact with the water it has been generated from is known as ________________ steam.
1 5/16'(inch)
Saturated
36'(inch)
After cutting

28. Which one of the following alloys does not require flux when brazing copper to copper joints?
8 5/8'(inch)
Air
The system temperature - thermal and dynamic movement of the pipe and vibration.
BCuP - Stands for Brazed Copper Phosphorus

29. What is used to soften PVC and remove the gloss?
2 and 1
hydrometer
Primer
Roller hangers

30. A cooling tower must have a ________ or be open-site.
Set point
1 foot
Backflow preventer
Clove hitch with a half hitch

31. What type of Copper tubing is not identified by color on the tubing itself?
15 Feet
discharge
Increase the pressure when the temperature increases
soft tempered

32. 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?
Fusion
Large end to smaller end to center(bull)
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.
the type of coating and current

33. To fabricate a 60 degree elbow from a 90 you would...
Height * .433 = psig
.01745 - 3.1416 - and .7854
Too fast of a travel rate
Level the 90 in horizontal position determine inside arc - backside arc and face to center dimensions for 60 degree elbow - mark and cut

34. The pipe that connects the steam header to the boiler return connection is the...
The impeller
Equalizing line
soft tempered
Hydrostatic

35. What is capillary action?
The flow of a liquid into a small space
Large volumes of condensate flash back to liquid in the tank so it removes trapped steam from the condensate.
an eccentric reducer flat on top
Groove

36. What type of hanger uses a spring that splits the rod?
Spring hanger
Ammonia
take-off must be subtracted from the end-to-center measurement.
62.4lbs

37. To figure the end-to-end measurement of a piece of pipe when the end-to-end center measurement is known the...
take-off must be subtracted from the end-to-center measurement.
Two Hole
Never
Bight - running end and standing part

38. What is typically a final control element?
Hydrostatic
Valve
bowline on a bight
no valves permitted

39. The treatment of liquids in motion is known as...
The same ID as the branch
Hydraulics
Alloying
.135 cu ft

40. There are __________ gallons in a cubic foot.
Guide - Anchor - Guide
Dog Everything
Fuel - Heat - Oxygen
7.48

41. What causes water to move in a Hydronic system?
Sch 80 Steel pipe
Insert pipe into fitting and turn 1/4 turn and hold
The pump creates a differential in pressure that moves the water.
Backflow preventer

42. What is the minimum safe clearance between cranes and energized power lines operating at 50kV or below?
4 to 20 milliamps
Waterlogged
14.7 psia
10 feet

43. An abrasive wheel should never run faster than it...
All the way to the shoulder
Pressuretrol
Pressure Rating
maximum rated capacity

44. What instrument is best for measuring vacuum?
Clove hitch with a half hitch
Insure progressively tighter fit
Manometer
an eccentric reducer flat on top

45. An oil separator is required on systems using...
Discharge
Ammonia
The impeller
pi * radius squared

46. Steam supply using parallel flow is...
steam and condensate flowing in the same direction
Prevailing wind speed and direction - environmental concerns - zoning requirements
Magnesium
the core

47. The pipe fitting that makes a 180 degree turn is called a/an?
.707
return fitting
1 foot
Down Stream

48. What is the welding position 1 - on the electrode mean?
4 1/2'(inch)
180
All position
To allow for thermal movement

49. 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
take-off must be subtracted from the end-to-center measurement.
Before the strainer and fully open.
To reduce the pressure from the cylinders to safe and workable pressures

50. How high must you extend a ladder above the roof or deck?

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Plumbing Certification

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