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. Formula for a cubic foot of an unknown substances weight?
Fuel - Heat - Oxygen
no valves permitted
true isometric
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

2. A triple-duty valve is installed...
Guide - Anchor - Guide
7.48
5 9/16'(inch)
In the hot water heating pumps discharge piping.

3. Ladders with visible defects - such as broken rungs - cracked side rails - or broken steps must be...
Insufficient condensate drainage
The Evaporator
Basket
Tagged and removed from service.

4. Steam supply using parallel flow is...
Increase
steam and condensate flowing in the same direction
Before the strainer and fully open.
tangent 1/2 angle x radius

5. Annealing copper...
Axis of pipe should be on a 45 degree
Softens it
.01745 - 3.1416 - and .7854
Blue... think b-LLLLue

6. Which of the following has the largest inside diameter?
Sensor
Its cheaper!
Anchors
Schedule 10

7. A direct acting thermostat is used to...
Softener
lower hook
Increase the pressure when the temperature increases
tangent 1/2 angle x radius

8. A rating of 300# refers to a flange's...
Up and Down
Sensor
Pressure Rating
Pipe strain

9. How far should a copper tube be inserted into a cup for a brazed joint?
Above the main
All the way to the shoulder
Mechanical/Thermostatic
The same ID as the branch

10. What does GFCI stand for?
blow the valves for a moment
Sch 40
Ground Fault Circuit Interrupter
.7854 x D squared

11. The color code for ACR copper is...
Crimson... think aCRimson
.625
zinc
Capillary action

12. Which of the following is NOT acceptable as part of a personal fall arrest system?
NEVER!
Body belts
Sensor
Yellow.. think Dee Double U is yelloWWW

13. A dielectric fitting should be used on...
Not to scale - does not show locations of equipment. It shows pipe size and flow.
true isometric
steel to copper joints
maximum rated capacity

14. In the cooling cycle - which component throttles the flow of refrigerant?
tangent 1/2 angle x radius
compression
Expansion Device
7.0

15. What size hole should be cut into a main to saddle IN a smaller pipe?
The same OD as the branch
1
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.
Flashing

16. Which of the following is a key element of a comprehensive safety and health program?
Solder joints
The same ID as the branch
Hazard prevention and control.
Spiral

17. Why is it necessary to use flux on a soldered joint?
Pneumatics
Eccentric reducer (flat on top)
To chemically prepare the pieces for soldering
3.1416

18. The maximum practical suction lift on positive displacement pumps is 22 feet and on centrifugal pumps it is __________ feet.
Pressure rating
34 feet
Fuse
15 Feet

19. The amount of heat necessary bring about a change of state from solid to liquid or liquid to gas is known as _______________ heat.
Latent
Flashing
Hazard prevention and control.
Before the strainer and fully open.

20. What is the purpose of the oxygen and acetylene regulators?
100% of the rated capacity
To reduce the pressure from the cylinders to safe and workable pressures
3.1416
75 degrees - also 4 to 1

21. 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.
foot valve
The tensile strength of the rod in PSI times 1 -000
Flashing
1/2 BTU

22. A simple example of a lever is...
When a large volume of condensate is generated
discharge
A pry bar
Dog Everything

23. When is it safe to remove the old packing from a valve that is under pressure?
handle will bend
Sensor
Blue... think b-LLLLue
NEVER!

24. The device that controls the pressure in a low pressure steam boiler is called a...
Pressuretrol
Body belts
Remote bulb
NEVER!

25. When should a person designated as an attendant attempt to rescue a worker that is trapped?
true isometric
Groove
Coating
Never

26. The best method to ensure that a plastic joint is made properly - you should...
.135 cu ft
Insert pipe into fitting and turn 1/4 turn and hold
Red.. think M&M is RED
1 5/16'(inch)

27. What are the three types of steam traps?
Tagged and removed from service.
Thermostatic - Thermodynamic and Mechanical
dry expansion
180

28. Soldered joints should never be used on systems above...
7.48
250 degrees
Notify response team and allow them to rescue.
Clean all surfaces

29. What type of copper tubing joint requires use of a ferrule?
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.
Conduction - convection and radiant.
Green... think KKelly GREEN
compression

30. Which of the following is an essential element necessary to produce an ordinary fire?
Bight - running end and standing part
Fuel - Heat - Oxygen
10 feet
Insufficient condensate drainage

31. Why can flux be omitted in a brazed joint?
The flux is in the filler material
Remote bulb
Steam
Clean all surfaces

32. Which rigging configuration has the greatest sling strength?
Basket
.075lbs
Set point
Equalizing line

33. Theoretically - a pump can raise water by suction approximately __________ feet vertically.
34 feet
1.5
62.4 pounds
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)

34. Which of the elements of a wire rope aid in absorbing '(inch)Shock Loads'(inch)?
maximum rated capacity
the core
.707
Controller

35. What instrument is best for measuring vacuum?
1728
Dry expansion type
Height * .433 = psig
Manometer

36. What is on the low side of the vapor compression cycle?
Provide oxygen barrier - stabilize and direct the force of the arc and to gather impurities in the form of slag.
The Evaporator
Before the strainer and fully open.
Raise the load

37. What type of hanger uses a spring that splits the rod?
The type of coating and current
Up and Down
Two Hole
Spring hanger

38. What type of expansion joint utilizes mechanical movement?
Ball joint - Bellows Joint and Packed Joint
Raise the load
Protection for loss of water in the boiler.
9

39. What does the stamp Oxy-Med stand for on copper tubing?
250 degrees
an eccentric reducer flat on top
When a large volume of condensate is generated
The tubing has been cleaned for oxygen service

40. The smallest nominal size DWV copper tube is...

41. In one cubic foot there are _________ cubic inches.
Thermostatic - Thermodynamic and Mechanical
Neutral
1728
Raise the load

42. The leading cause of on-the-job deaths in the construction industry is _______________.
falls
the type of coating and current
near the middle of the jaws
orthographic

43. A device that mechanically attaches to the side of a flange on a beam is called a...
handle will bend
62.4 pounds
.625
Beam clamp

44. When selecting a hanger for a piping system you should consider...
6 5/8'(inch)
The system temperature - thermal and dynamic movement of the pipe and vibration.
Hydrostatics
34 feet

45. Factors in considering the site selection for a new cooling tower.
Prevailing wind speed and direction - environmental concerns - zoning requirements
.7854 x D squared
Roller hangers
In a pressure gauge

46. What is the formula to calculate thermal expansion?

47. Which of the following is the decimal equivalent of 5/8'(inch)
Cavitation
Pressure Rating
supporter of combustion
.625

48. 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
All position
near the middle of the jaws
Material Safety Data Sheet

49. A guard rail system must withstand a minimum force of __________ pounds.
200 lbs
Mechanical return is used.
All position
1/2 BTU

50. A neutral reading on the PH scale is...
1.25'(inch)
Argon
8.33lbs
7.0