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. Exits from a trench 150' long and 4' deep must be located within how many feet of a worker in the trench?
25 feet
2 3/8'(inch)
Coating
Flux

2. The specific gravity of a liquid can only be measured using the following instrument...
1.25'(inch)
Ammonia
7.0
hydrometer

3. What is the formula to figure take off on a 45 degree elbow?

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4. A sling is weakest in which position?
bowline on a bight
1 foot
Coating
Choked position

5. When should a person designated as an attendant attempt to rescue a worker that is trapped?
Never
NEVER!
100% of the rated capacity
Conduction - convection and radiant.

6. When a liquid changes immediately to a vapor it is called...
Flashing
no valves permitted
bowline on a bight
The flux burns and the joint becomes ineffective

7. The 6G welding position is...
Conduction - convection and radiant.
1 5/16'(inch)
With the weld at a 45 degree angle
Pressure Rating

8. One atmosphere is equal to...
15 PSI
Schedule 10
14.7psia - always in PSI-A
25' from any worker

9. What is the welding position 2 - on the electrode mean?
Its cheaper!
The same ID as the branch
Softener
Flat and horizontal positions

10. Momentarily closing the starting switch to check the rotation of the pump is known as __________ the pump.
Bumping
231
blow the valves for a moment
Ball joint - Bellows Joint and Packed Joint

11. What is the minimum safe clearance between cranes and energized power lines operating at 50kV or below?
13/16'(inch)
10 feet
Crimson... think aCRimson
Depends on the desired action if the disc or plug becomes detatched from the stem. (Fail open or Fail closed)

12. The pipe fitting that makes a 180 degree turn is called a/an?
Globe
1/2 BTU
return fitting
Equalizing line

13. The treatment of liquids at rest is known as...
Hydrostatics
.707 x Travel
13/16'(inch)
The Evaporator

14. A device that mechanically attaches to the side of a flange on a beam is called a...
Beam clamp
Magnesium
radius squared times PI
Spring hanger

15. OD for 1/2'(inch)

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16. When leaning a ladder against an object - the ladder should be at an approximate angle of __________ degrees.
Continuously
75 degrees - also 4 to 1
Increase in friction
Coating

17. There are __________ cubic inches in a gallon.
Two Hole
Manometer
Eccentric reducers - flat on top
231

18. You should never blow your clothes off with oxygen because oxygen is a/an
All the way to the shoulder
Mechanical/Thermostatic
Thermostatic - Thermodynamic and Mechanical
supporter of combustion

19. Oil is used on a pipe machine to...
Flat and horizontal positions
cool and lubricate the die
2.31ft
None

20. Horizontal steam supply piping should be reduced in size by using...
Spring hanger
Mechanical/Thermostatic
Eccentric reducer (flat on top)
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

21. What is the welding position 3 - on the electrode mean?
Spring hanger
Flat position only
Thermostatic - Thermodynamic and Mechanical
Continuously

22. What is the expansion and compression of water vapor in a pump?
Mechanical return is used.
14.7psia - always in PSI-A
The same ID as the branch
Cavitation

23. Condensate lines should be pitched...
NEVER!
In the direction of flow
Before the strainer and fully open.
Flat position only

24. Since _______________ is virtually incompressible - pressure has little effect on its volume.
All the way to the shoulder
Eccentric reducer (flat on top)
Water
Air

25. What is the standard pressure range for a pneumatic signal?
OD
Remove any paint or rust.
Body belts
3 to 15 psi

26. 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.
Fuel - Heat - Oxygen
soft tempered
The pump creates a differential in pressure that moves the water.
foot valve

27. One gallon of water weighs?
Above the main
Clean all surfaces
8.33 pounds
Hydraulics

28. What are 3 fuel gases used for heating pipe or tubing?
34 feet
MAPP - acetylene - and propane
falls
foot valve

29. The color code for type L copper is...
Set point
no valves permitted
Blue... think b-LLLLue
Snubber

30. A vent is not needed on a condensate receiver when...
6 5/8'(inch)
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.
Material Safety Data Sheet
Mechanical return is used.

31. A rating of 300# refers to a flange's...
Flooded
Green... think KKelly GREEN
Pressure Rating
All the way to the shoulder

32. What is the main reason for the taper on a pipe thread?
Hazard prevention and control.
set point
Insure progressively tighter fit
Controller

33. There are __________ gallons in a cubic foot.
7.48
Mechanical/Thermostatic
Alloying
Flat and horizontal positions

34. Calculate head pressure in a section of vertical pipe?
180
.0361
Height * .433 = psig
The system temperature - thermal and dynamic movement of the pipe and vibration.

35. Which of the elements of a wire rope aid in absorbing '(inch)Shock Loads'(inch)?
Schedule 10
the core
3.1416
Prevailing wind speed and direction - environmental concerns - zoning requirements

36. A fan coil uses ______ to distribute heating or cooling to the space.
4 times
Forced convection - because the FAN forces convection!
Capillary action
the employer

37. The specific gravity of a gas is relative to the specific weight of _______________ - which has a specific gravity of one.
Air
3.1416
On high side of the system and turns gas to liquid.
10 feet

38. Which of the following is a key element of a comprehensive safety and health program?
Hazard prevention and control.
Two Hole
62.4lbs
steel to copper joints

39. A thermostatic steam trap that fails in the closed position would cause a heating unit to become...
Ball joint - Bellows Joint and Packed Joint
Waterlogged
Axis of pipe should be on a 45 degree
The Evaporator

40. Which is the correct formula for the area of a circle?
Blue... think b-LLLLue
Continuously
25 feet
.7854 x D squared

41. In a Hydronic heating system - units at the top of the system not heating are likely to be...
Absolute
pi * radius squared
Air Bound
Flashing

42. What is the purpose of the oxygen and acetylene regulators?
The impeller
MAPP - acetylene - and propane
Expansion loop.
To reduce the pressure from the cylinders to safe and workable pressures

43. Why can flux be omitted in a brazed joint?
The flux is in the filler material
Fuse
Red.. think M&M is RED
To protect the threads from rust.

44. The best method to ensure that a plastic joint is made properly - you should...
.707
Insert pipe into fitting and turn 1/4 turn and hold
.625
Raise the load

45. If you double pipe size the carrying capacity is increased...
4 times
14.7psia - always in PSI-A
dry expansion
.135 cu ft

46. When arranging weld coupons for testing position 6G...
7.0
Axis of pipe should be on a 45 degree
Provide oxygen barrier - stabilize and direct the force of the arc and to gather impurities in the form of slag.
Before the strainer and fully open.

47. A system which the refrigerant is in the shell and cools the fluid in the tubes is...
Quarter
Conduction - convection and radiant.
radius squared times PI
Flooded

48. Formula for a cubic foot of an unknown substances weight?
Hazard prevention and control.
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
Climbing the cross braces.
Green... think KKelly GREEN

49. When should you ream the end of a pipe?
sewage
14'(inch)
5 9/16'(inch)
After cutting

50. What type of hanger uses a spring that splits the rod?
Globe
7.48
Spring hanger
A pry bar