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. The type of valve permitted downstream of a temperature and pressure relief valve on a water heater is...
no valves permitted
.433psi
an eccentric reducer flat on top
The Evaporator

2. When should a person designated as an attendant attempt to rescue a worker that is trapped?
Quarter
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.
Never
25 feet

3. Where should the pressure enter a globe valve?
Height * .433 = psig
Depends on the desired action if the disc or plug becomes detatched from the stem. (Fail open or Fail closed)
Conduction - convection and radiant.
1.5

4. Standard atmospheric pressure at sea level is _____...
discharge
Globe
14.7 psia
Continuously

5. What are 3 fuel gases used for heating pipe or tubing?
36'(inch)
MAPP - acetylene - and propane
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)
Sch 40

6. With a high pressure valve you should never _____ under pressure.
Mechanical/Thermostatic
Remove the packing
cool and lubricate the die
Point at the base and sweep the base with the extinguisher

7. A diamond on an instrumentation loop diagram encloses information concerning...
.075lbs
Ground Fault Circuit Interrupter
Mechanical/Thermostatic
Set point

8. The color code for ACR copper is...
Crimson... think aCRimson
MAPP - acetylene - and propane
Air Bound
15 PSI

9. The pipe that connects the steam header to the boiler return connection is the...
Two Hole
Equalizing line
Solder joints
Pressure rating

10. Factors in considering the site selection for a new cooling tower.
Pipe penetration
Valve
.625
Prevailing wind speed and direction - environmental concerns - zoning requirements

11. What size hole should be cut into a main to saddle ON a smaller pipe?
MAPP - acetylene - and propane
The same ID as the branch
To allow for thermal movement
Level the 90 in horizontal position determine inside arc - backside arc and face to center dimensions for 60 degree elbow - mark and cut

12. A fan coil uses ______ to distribute heating or cooling to the space.
Beam clamp
The stud bolt is stronger than a machine bolt of the same size and material.
To chemically prepare the pieces for soldering
Forced convection - because the FAN forces convection!

13. Theoretically - a pump can raise water by suction approximately __________ feet vertically.
hydrometer
840
compression
34 feet

14. Soldered joints should never be used on systems above...
250 degrees
Waterlogged
Prevailing wind speed and direction - environmental concerns - zoning requirements
near the middle of the jaws

15. Formula for a cubic foot of an unknown substances weight?
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
falls
.0361
In the hot water heating pumps discharge piping.

16. OD for 8'(inch)

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

18. Momentarily closing the starting switch to check the rotation of the pump is known as __________ the pump.
Large volumes of condensate flash back to liquid in the tank so it removes trapped steam from the condensate.
maximum rated capacity
Purge the line when brazing
Bumping

19. A schematic drawing is...
Not to scale - does not show locations of equipment. It shows pipe size and flow.
Valve
Cavitation
Allow moisture to escape

20. On a centrifugal pump what is rotated by the motor?
Fusion
The impeller
Flat and horizontal positions
DWV

21. Which of the following is a key element of a comprehensive safety and health program?
Hazard prevention and control.
maximum rated capacity
Large volumes of condensate flash back to liquid in the tank so it removes trapped steam from the condensate.
.433psi

22. A float and thermostatic trap is a...
Fuel - Heat - Oxygen
Pressuretrol
7.48
Mechanical/Thermostatic

23. To order a reducing tee you should specify the size by...
steel to copper joints
Large end to smaller end to center(bull)
pi * radius squared
Pressure Rating

24. Which of the following is sometimes used as a shielding gas in the GTAW process?
Argon
9
When a large volume of condensate is generated
Eccentric reducer (flat on top)

25. To sense the temperature remotely from the thermostat location you would use...
9
Remote bulb
Sensor
The same OD as the branch

26. When should you ream the end of a pipe?
After cutting
Flash Tank
ALWAYS
The tubing has been cleaned for oxygen service

27. The 6G welding position is...
Too fast of a travel rate
With the weld at a 45 degree angle
1/2 BTU
7.0

28. What are the main differences between soldering and brazing?
The temperature that the joints are made - the flux and temperatures of the system
A pry bar
Body belts
9

29. To raise the boom of a crane you would...
7.0
9
4 times
Point thumb up

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

31. One gallon of water occupies how many cubic feet?
None
BCuP - Stands for Brazed Copper Phosphorus
.135 cu ft
(Total Height - Elevation) * .433 = psig

32. What is the weakest part of a chain hoist?
8 5/8'(inch)
The impeller
lower hook
Notify response team and allow them to rescue.

33. A guard rail system must withstand a minimum force of __________ pounds.
200 lbs
14'(inch)
62.4
Clean all surfaces

34. What type of expansion joint utilizes mechanical movement?
Groove
3 1/2'(inch)
Ball joint - Bellows Joint and Packed Joint
steel to copper joints

35. Which rigging configuration has the greatest sling strength?
Basket
take-off must be subtracted from the end-to-center measurement.
Remove the packing
Remote bulb

36. What is the maximum pressure for an acetylene hose?
All position
Softens it
an eccentric reducer flat on top
15 PSI

37. How much heat is required to raise 1/2 pound of water 1 degree F?
Remote bulb
1/2 BTU
Axis of pipe should be on a 45 degree
Spiral

38. Calculate head pressure of a vertical pipe at specific elevations.
Absolute
Valve
Fusion
(Total Height - Elevation) * .433 = psig

39. When a flux joint is overheated it will not...
Neutral
14.7psia - always in PSI-A
hydrometer
Fuse

40. Formula for area of a circle?
Air
pi * radius squared
ALWAYS
Argon

41. To figure the end-to-end measurement of a piece of pipe when the end-to-end center measurement is known the...
Prevailing wind speed and direction - environmental concerns - zoning requirements
take-off must be subtracted from the end-to-center measurement.
Pipe penetration
Spring hanger

42. A __________ displacement pump discharges a definite quantity of liquid for each cycle.
1.25'(inch)
Positive
the core
OD

43. Which of the following is NOT acceptable as part of a personal fall arrest system?
Body belts
Waterlogged
BCuP - Stands for Brazed Copper Phosphorus
Never

44. All of the following are process control elements EXCEPT...
piping
return fitting
Climbing the cross braces.
Vaporization

45. Steam condensate lines should use...
return fitting
Alloying
Sch 80 Steel pipe
8.33 pounds

46. Which is the correct formula for the area of a circle?
cool and lubricate the die
Remote bulb
.7854 x D squared
Continuously

47. What is the welding position 3 - on the electrode mean?
1 foot
Flat position only
no valves permitted
Arrange a wire rope clamp so that the dead end has the U bolts

48. Why is it necessary to use roller hangers?
10 feet
To allow for thermal movement
7.0
Insure progressively tighter fit

49. Condensate lines should be pitched...
All position
In the direction of flow
Too fast of a travel rate
Point thumb up

50. Which one of the following alloys does not require flux when brazing copper to copper joints?
In the hot water heating pumps discharge piping.
BCuP - Stands for Brazed Copper Phosphorus
Protection for loss of water in the boiler.
no valves permitted