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. A dielectric fitting should be used on...
radius squared times PI
Ammonia
steel to copper joints
BCuP - Stands for Brazed Copper Phosphorus

2. If you double pipe size the carrying capacity is increased...
4 times
Sch 80 Steel pipe
1
Raise the load

3. The color code for type M copper is...
Large end to smaller end to center(bull)
Discharge
1 foot
Red.. think M&M is RED

4. One gallon of water weighs?
In a pressure gauge
Continuously
Type K
8.33 pounds

5. To determine the travel for a 45 degree rolling offset you would...
1/2 BTU
Anchors
return fitting
Multiply the length of the hypotenuse of the roll and the set by 1.414

6. The type of drawing that most closely resembles an object as the eye would see it is referred to as a/an __________ drawing.
Magnesium
true isometric
2.31ft
Type K

7. What effect does the fill pressure (static) have on a closed loop plumbing system?
180
To allow for thermal movement
840
None

8. Soldered joints should never be used on systems above...
250 degrees
Segmental
Solder joints
To reduce the pressure from the cylinders to safe and workable pressures

9. The ______ is used to protect the weld puddle from contamination in the SMAW process.
MAPP - acetylene - and propane
Flux
Segmental
When a large volume of condensate is generated

10. What is capillary action?
Multiply the length of the hypotenuse of the roll and the set by 1.414
The temperature that the joints are made - the flux and temperatures of the system
The flow of a liquid into a small space
Fuse

11. Ladders with visible defects - such as broken rungs - cracked side rails - or broken steps must be...
Tagged and removed from service.
Body belts
Anchors
Sch 80 Steel pipe

12. A tag line should be used on a crane lift...
In a pressure gauge
ALWAYS
near the middle of the jaws
231

13. The pressure exerted by a liquid at rest is...
Hydrostatic
14'(inch)
Continuously
DWV

14. Standard atmospheric pressure at sea level is _____...
.707
14.7 psia
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
Basket

15. The sum of atmospheric and gauge pressure is known as __________ pressure.
Hazard prevention and control.
The type of coating and current
Absolute
Softens it

16. Where should the pressure enter a globe valve?
Above the main
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.
compression
Depends on the desired action if the disc or plug becomes detatched from the stem. (Fail open or Fail closed)

17. What are the three types of steam traps?
Thermostatic - Thermodynamic and Mechanical
Hazard prevention and control.
Insufficient condensate drainage
3.1416

18. 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.
1 5/16'(inch)
an eccentric reducer flat on top
foot valve
Center of the pipe

19. All of the following are process control elements EXCEPT...
Remote bulb
.433psi
piping
Remove any paint or rust.

20. Which of the following types of copper tube has the smallest wall thickness?
tangent 1/2 angle x radius
DWV
Backflow preventer
Choked position

21. Why is it necessary to use flux on a soldered joint?
Remove any paint or rust.
After cutting
3 to 15 psi
To chemically prepare the pieces for soldering

22. A device that mechanically attaches to the side of a flange on a beam is called a...
Pipe strain
250 degrees
Beam clamp
1

23. One cubic foot of water weighs?
Hazard prevention and control.
62.4 pounds
1 5/16'(inch)
Insert pipe into fitting and turn 1/4 turn and hold

24. What type of hanger uses a spring that splits the rod?
Spring hanger
Dog Everything
Latent
All position

25. The proper way to extinguish a fire is to...
On high side of the system and turns gas to liquid.
The same ID as the branch
Point at the base and sweep the base with the extinguisher
4 1/2'(inch)

26. Formula for area of a circle?
Hazard prevention and control.
Strainer
pi * radius squared
Ball joint - Bellows Joint and Packed Joint

27. What is the best gasket to use on a flanged joint on medium pressure steam?
Climbing the cross braces.
The stud bolt is stronger than a machine bolt of the same size and material.
Remote bulb
Spiral Wound

28. In a typical residential air condittioning system - the evaporator is of the _______________ type - where the liquid refrigerant should be totally vaporized before it reaches the outlet of the evaporator.
tangent 1/2 angle x radius
Body belts
To reduce the pressure from the cylinders to safe and workable pressures
dry expansion

29. What is not a requirement to size the steam trap on a heating unit?
The tensile strength of the rod in PSI times 1 -000
Down Stream
Condensate pump size
Insert pipe into fitting and turn 1/4 turn and hold

30. What temperature does water boil at sea level?
212 degrees F
Large volumes of condensate flash back to liquid in the tank so it removes trapped steam from the condensate.
handle will bend
set point

31. A __________ displacement pump discharges a definite quantity of liquid for each cycle.
Schedule 10
Positive
840
Height * .433 = psig

32. What is the function of the covering on the electrodes during the process of '(inch)Shielded Metal Arc Welding'(inch)?
840
Provide oxygen barrier - stabilize and direct the force of the arc and to gather impurities in the form of slag.
1
Increase

33. When a cranes signaler's hand is pointed up with his finger moving in a circle it means to...
.433psi
Raise the load
Manometer
36'(inch)

34. An exit from a trench should be no more than...

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35. Exits from a trench 150' long and 4' deep must be located within how many feet of a worker in the trench?
Never
Globe valve
Neutral
25 feet

36. The anode rod used in a hot water heater to protect it from corrosion is made of...
Magnesium
take-off must be subtracted from the end-to-center measurement.
blow the valves for a moment
Green... think KKelly GREEN

37. The amount of heat it takes to raise one pound of water one degree Fahrenheit is known as a...
dry expansion
BUT
cool and lubricate the die
Controller

38. What is installed after the isolation valve and before the trap union on a standard trap assembly?
100% of the rated capacity
dry expansion
Multiply the length of the hypotenuse of the roll and the set by 1.414
Strainer

39. The purpose of the foot switch on a power-operated pipe cutting and threading machine is to?

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40. One foot of water exerts...
.075lbs
4 to 20 milliamps
.433psi
The flux burns and the joint becomes ineffective

41. A concentric reducer could be used to connect to a horizontal pump _______________ line.
Two Hole
discharge
Flux
Not to scale - does not show locations of equipment. It shows pipe size and flow.

42. A sling is weakest in which position?
Before the strainer and fully open.
The Evaporator
Act as a safety device to shut off the motor if the operator's foot is removed from the switch.
Choked position

43. When lifting objects with sharp edges you should use a...
3.1416
soft tempered
Allow moisture to escape
Softener

44. The most that a crane should be loaded is...
62.4lbs
100% of the rated capacity
.135 cu ft
Spiral

45. With a high pressure valve you should never _____ under pressure.
Remove the packing
Increase in friction
Insufficient condensate drainage
Spiral Wound

46. When a loop is needed at any point between ends of a rope - the proper knot to tie is the...
The system temperature - thermal and dynamic movement of the pipe and vibration.
bowline on a bight
Backflow preventer
Ground Fault Circuit Interrupter

47. What is the purpose for a weep hole in a saddle pad?
Allow moisture to escape
Fusion
Saturated
hydrometer

48. The pipe fitting that makes a 180 degree turn is called a/an?
Arrange a wire rope clamp so that the dead end has the U bolts
Large end to smaller end to center(bull)
return fitting
Remote bulb

49. What has the largest effect on pump alignment?
Bumping
cool and lubricate the die
Pipe strain
maximum rated capacity

50. When a pipe size is decreased by half - the carrying capacity of the pipe decreases by...
Hydraulics
Quarter
Anchors
Conduction - convection and radiant.