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Plumbing Certification

Instructions:

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. Why is it necessary to use flux on a soldered joint?
2.31ft
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.
1.25'(inch)
To chemically prepare the pieces for soldering

2. The type of drawing that views a building by looking directly at the front - top and side is referred to as a/an ___________ drawing.
1/2 BTU
zinc
orthographic
Up and Down

3. A system which the refrigerant is in the shell and cools the fluid in the tubes is...
Flooded
handle will bend
steel to copper joints
Its cheaper!

4. An oil separator is required on systems using...
25 feet
Snubber
Ammonia
Schedule 10

5. The last digit on a welding electrode refers to the __________ of the electrode.
Remove any paint or rust.
Choked position
Two Hole
Coating

6. What are the main differences between soldering and brazing?
The temperature that the joints are made - the flux and temperatures of the system
The tensile strength of the rod in PSI times 1 -000
Remove the packing
5 9/16'(inch)

7. What does a condenser do?
Expansion loop.
On high side of the system and turns gas to liquid.
Vaporization
Water

8. 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?
compression
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.
34 feet
All the way to the shoulder

9. The device that controls the pressure in a low pressure steam boiler is called a...
Roller hangers
Tagged and removed from service.
Globe
Pressuretrol

10. What is the purpose of the oxygen and acetylene regulators?
Raise the load
cool and lubricate the die
To reduce the pressure from the cylinders to safe and workable pressures
180

11. The main cause of undercutting is...
dry expansion
Too fast of a travel rate
180
Act as a safety device to shut off the motor if the operator's foot is removed from the switch.

12. Which is the correct formula for the area of a circle?
.7854 x D squared
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.
When a large volume of condensate is generated
Never

13. What is the standard pressure range for a pneumatic signal?
Cavitation
62.4 pounds
25' from any worker
3 to 15 psi

14. The specific weight of mercury is...
.0361
Notify response team and allow them to rescue.
7.48
Flat and horizontal positions

15. To raise the boom of a crane you would...
Point thumb up
The type of coating and current
Green
Climbing the cross braces.

16. A neutral reading on the PH scale is...
Air Bound
7.0
62.4lbs
36'(inch)

17. The only entity that has the responsibility and authority to appoint the competent person is...
the employer
Sch 80 Steel pipe
Air
Coating

18. What type of flame should be used to cut carbon steel?
Groove
Neutral
BCuP - Stands for Brazed Copper Phosphorus
Basket

19. A diamond on an instrumentation loop diagram encloses information concerning...
5 9/16'(inch)
Fusion
Set point
Arrange a wire rope clamp so that the dead end has the U bolts

20. Exits from a trench 150' long and 4' deep must be located within how many feet of a worker in the trench?
zinc
Pressure Rating
Ammonia
25 feet

21. Which of the following is sometimes used as a shielding gas in the GTAW process?
Argon
180
6 5/8'(inch)
falls

22. When selecting a hanger for a piping system you should consider...
Pipe strain
Primer
Guide - Anchor - Guide
The system temperature - thermal and dynamic movement of the pipe and vibration.

23. The treatment of liquids in motion is known as...
The pump creates a differential in pressure that moves the water.
.707
Hydraulics
Fusion

24. Steam condensate lines should be installed on...
Roller hangers
hydrometer
Mechanical/Thermostatic
Fuel - Heat - Oxygen

25. The best knot to use when lifting pipe vertically is the...
To provide movement cause from a change in temperature
Clove hitch with a half hitch
Axis of pipe should be on a 45 degree
NEVER!

26. The type of drawing that most closely resembles an object as the eye would see it is referred to as a/an __________ drawing.
true isometric
Saturated
The tubing has been cleaned for oxygen service
9

27. What is the sum of all angles in a triangle?
180
1
true isometric
Act as a safety device to shut off the motor if the operator's foot is removed from the switch.

28. The specific gravity of a liquid can only be measured using the following instrument...
hydrometer
Mechanical/Thermostatic
compression
36'(inch)

29. What are the three rope parts used in tying knots and hitches?
Green... think KKelly GREEN
On high side of the system and turns gas to liquid.
Yellow.. think Dee Double U is yelloWWW
Bight - running end and standing part

30. The color code for type M copper is...
3.1416
MAPP - acetylene - and propane
Red.. think M&M is RED
2.31ft

31. Theoretically - a pump can raise water by suction approximately __________ feet vertically.
34 feet
radius squared times PI
ALWAYS
Depends on the desired action if the disc or plug becomes detatched from the stem. (Fail open or Fail closed)

32. To order a reducing tee you should specify the size by...
.707 x Travel
Large end to smaller end to center(bull)
.135 cu ft
The impeller

33. OSHA was enacted to...
protect worker safety and health
falls
BCuP - Stands for Brazed Copper Phosphorus
MAPP - acetylene - and propane

34. Where should the pressure enter a globe valve?
orthographic
Remove the packing
Depends on the desired action if the disc or plug becomes detatched from the stem. (Fail open or Fail closed)
Magnesium

35. Ladders with visible defects - such as broken rungs - cracked side rails - or broken steps must be...
Tagged and removed from service.
Remove any paint or rust.
6 5/8'(inch)
Thermostatic - Thermodynamic and Mechanical

36. OD for 1'(inch)

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37. The specific gravity of a gas is relative to the specific weight of _______________ - which has a specific gravity of one.
Air
62.4
Globe valve
.01745 - 3.1416 - and .7854

38. You should never blow your clothes off with oxygen because oxygen is a/an
The pump creates a differential in pressure that moves the water.
supporter of combustion
Neutral
The science of heat transfer using water.

39. Which of the following is NOT a reason for using cutting oil when threading pipe?
To protect the threads from rust.
Groove
The type of coating and current
Above the main

40. An increase in pressure will cause the boiling point of water to ________...
Yellow.. think Dee Double U is yelloWWW
Hydraulics
Notify response team and allow them to rescue.
Increase

41. Before attaching regulators to an oxygen cylinder...
compression
Choked position
blow the valves for a moment
Sch 80 Steel pipe

42. Momentarily closing the starting switch to check the rotation of the pump is known as __________ the pump.
Continuously
To chemically prepare the pieces for soldering
Bumping
Choked position

43. On a centrifugal pump what is rotated by the motor?
Point at the base and sweep the base with the extinguisher
Erratic readings
The impeller
.707 x Travel

44. There are __________ cubic inches in a gallon.
1.5
On high side of the system and turns gas to liquid.
231
Green... think KKelly GREEN

45. Steam supply using parallel flow is...
steam and condensate flowing in the same direction
Remove any paint or rust.
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.
15 PSI

46. What size hole should be cut into a main to saddle ON a smaller pipe?
NEVER!
Remove the packing
Multiply the length of the hypotenuse of the roll and the set by 1.414
The same ID as the branch

47. The symbol for pi is equivalent to...
The Evaporator
The same ID as the branch
3.1416
4 times

48. What is the standard for an electronic signal?
Loosen the far bolts first
4 to 20 milliamps
Sch 40
The temperature that the joints are made - the flux and temperatures of the system

49. What size hole should be cut into a main to saddle IN a smaller pipe?
7.0
Immersion sensor
Allow moisture to escape
The same OD as the branch

50. A rating of 300# refers to a flange's...
1728
On low side of the system and expands liquid to low pressure gas.
Increase the pressure when the temperature increases
Pressure Rating

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Plumbing Certification

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