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Test your basic knowledge |
Plumbing Certification
Start Test
Study First
Subject
:
certifications
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. The only entity that has the responsibility and authority to appoint the competent person is...
Capillary action
the employer
Air
Pipe penetration
2. Which component in a closed control loop is the primary element?
Insert pipe into fitting and turn 1/4 turn and hold
Sensor
the core
All position
3. The specific gravity of a gas is relative to the specific weight of _______________ - which has a specific gravity of one.
25' from any worker
Air
Backflow preventer
soft tempered
4. When changing pipe sizes in the horizontal supply or return lines of a two-pipe hot water heating system use...
212 degrees F
Blue... think b-LLLLue
To provide movement cause from a change in temperature
Eccentric reducers - flat on top
5. OD for 1'(inch)
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6. What is typically a final control element?
blow the valves for a moment
Act as a safety device to shut off the motor if the operator's foot is removed from the switch.
Valve
BCuP - Stands for Brazed Copper Phosphorus
7. When a loop is needed at any point between ends of a rope - the proper knot to tie is the...
The flux burns and the joint becomes ineffective
Flooded
bowline on a bight
Backflow preventer
8. A guard rail system must withstand a minimum force of __________ pounds.
Loosen the far bolts first
1.5
Equalizing line
200 lbs
9. When a liquid changes immediately to a vapor it is called...
Flashing
maximum rated capacity
Ball joint - Bellows Joint and Packed Joint
Valve
10. The color code for type '(inch)K'(inch) copper is?
radius squared times PI
near the middle of the jaws
Green
BUT
11. What causes water to move in a Hydronic system?
The pump creates a differential in pressure that moves the water.
cool and lubricate the die
BCuP - Stands for Brazed Copper Phosphorus
The flux is in the filler material
12. What type of Copper tubing is not identified by color on the tubing itself?
handle will bend
When a large volume of condensate is generated
soft tempered
sewage
13. Which of the following is NOT a reason to use stud bolts instead of machine bolts for bolting flanged piping joints?
The stud bolt is stronger than a machine bolt of the same size and material.
Air Bound
The tensile strength of the rod in PSI times 1 -000
Before the strainer and fully open.
14. Steam supply using parallel flow is...
steam and condensate flowing in the same direction
The stud bolt is stronger than a machine bolt of the same size and material.
Air Bound
Pneumatics
15. To determine the set on a 45 degree offset you would multiply the travel by...
The same ID as the branch
25' from any worker
3.1416
.707
16. The purpose of the foot switch on a power-operated pipe cutting and threading machine is to?
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17. The best method to ensure that a plastic joint is made properly - you should...
6 5/8'(inch)
Insert pipe into fitting and turn 1/4 turn and hold
62.4lbs
Increase
18. How far should a copper tube be inserted into a cup for a brazed joint?
7.0
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
All the way to the shoulder
Steam
19. What does a + plus sign mean?
discharge
Pipe penetration
Coating
The pump creates a differential in pressure that moves the water.
20. In a Hydronic heating system - units at the top of the system not heating are likely to be...
Water
Pipe strain
250 degrees
Air Bound
21. To assemble a 4 bolt flange...
Air
Vaporization
The pump creates a differential in pressure that moves the water.
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.
22. The color code for type M copper is...
In the direction of flow
Fuel - Heat - Oxygen
Red.. think M&M is RED
bowline on a bight
23. What should the outside attendant do to rescue a worker who shows physiological effects of exposure in a confined space?
Notify response team and allow them to rescue.
Hydrostatics
Roller hangers
pi * radius squared
24. Guides are used near...
Anchors
Increase the pressure when the temperature increases
The system temperature - thermal and dynamic movement of the pipe and vibration.
.01745 - 3.1416 - and .7854
25. What does a condenser do?
hydrometer
Multiply the length of the hypotenuse of the roll and the set by 1.414
62.4lbs
On high side of the system and turns gas to liquid.
26. OD for 1/2'(inch)
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27. Where should the high pressure condensate be piped to before entering the receiver?
Up and Down
Flash Tank
Primer
3 1/2'(inch)
28. What is the specific gravity of water?
1
Argon
.433psi
Set point
29. One pound of water pressure is equal to...
231
Point at the base and sweep the base with the extinguisher
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.
2.31ft
30. Condensate lines should be pitched...
In the direction of flow
Magnesium
.075lbs
bowline on a bight
31. What is the purpose of the oxygen and acetylene regulators?
To reduce the pressure from the cylinders to safe and workable pressures
Flooded
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 type of coating and current
32. An up-feed steam heating system has the heating units...
Above the main
All position
34 feet
1/2 BTU
33. Which of the following constants are used when working with circles and areas?
.01745 - 3.1416 - and .7854
Steam
radius squared times PI
None
34. How often should the atmosphere be tested in a confined space?
2 3/8'(inch)
bowline on a bight
return fitting
Continuously
35. What is the weakest part of a chain hoist?
In a pressure gauge
Conduction - convection and radiant.
lower hook
Controller
36. The color code for type L copper is...
62.4
Blue... think b-LLLLue
NEVER!
Above the main
37. A tag line should be used on a crane lift...
ALWAYS
Air
13/16'(inch)
.0361
38. Which of the elements of a wire rope aid in absorbing '(inch)Shock Loads'(inch)?
Point at the base and sweep the base with the extinguisher
the core
Purge the line when brazing
Insufficient condensate drainage
39. The symbol for pi is equivalent to...
The same ID as the branch
Softens it
Spiral
3.1416
40. A Hartford loop is used for...
Allow moisture to escape
Protection for loss of water in the boiler.
Waterlogged
The flux is in the filler material
41. What type of expansion joint does NOT utilize mechanical movement?
Globe
Expansion loop.
.491lbs
BUT
42. The proper way to extinguish a fire is to...
Point at the base and sweep the base with the extinguisher
1:48 - because 1/4 of an inch is 1/48th of a foot
Prevailing wind speed and direction - environmental concerns - zoning requirements
Dog Everything
43. What are the main differences between soldering and brazing?
Too fast of a travel rate
15 Feet
Bumping
The temperature that the joints are made - the flux and temperatures of the system
44. One gallon of water occupies how many cubic feet?
1.5
Raise the load
Fuse
.135 cu ft
45. What temperature does water boil at sea level?
Green
212 degrees F
orthographic
steel to copper joints
46. A diamond on an instrumentation loop diagram encloses information concerning...
bowline on a bight
.433psi
orthographic
Set point
47. The main cause of undercutting is...
falls
Too fast of a travel rate
1
When a large volume of condensate is generated
48. The device that controls the pressure in a low pressure steam boiler is called a...
With the weld at a 45 degree angle
To allow for thermal movement
Provide oxygen barrier - stabilize and direct the force of the arc and to gather impurities in the form of slag.
Pressuretrol
49. Name the three methods of transferring heat.
Conduction - convection and radiant.
blow the valves for a moment
8.33lbs
Globe valve
50. When should a person designated as an attendant attempt to rescue a worker that is trapped?
The impeller
840
Loosen the far bolts first
Never
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