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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 pipe that connects the steam header to the boiler return connection is the...
Equalizing line
Discharge
.707 x Travel
Spiral Wound

2. When a pipe size is decreased by half - the carrying capacity of the pipe decreases by...
Multiply the length of the hypotenuse of the roll and the set by 1.414
Prevailing wind speed and direction - environmental concerns - zoning requirements
Pressure rating
Quarter

3. The best knot to use when lifting pipe vertically is the...
10 feet
Clove hitch with a half hitch
Sch 80 Steel pipe
an eccentric reducer flat on top

4. Which type of orifice plate is designed to measure flow of liquids containing solids?
Groove
Choked position
Segmental
pi * radius squared

5. What are the main differences between soldering and brazing?
The temperature that the joints are made - the flux and temperatures of the system
.135 cu ft
steel to copper joints
Height * .433 = psig

6. A neutral reading on the PH scale is...
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)
7.0
Pipe penetration
Neutral

7. Why can flux be omitted in a brazed joint?
The flux is in the filler material
Steam
Remove the packing
25' from any worker

8. What are the three types of steam traps?
Thermostatic - Thermodynamic and Mechanical
Spring hanger
62.4
Raise the load

9. A float and thermostatic trap is a...
Ammonia
Mechanical/Thermostatic
The tensile strength of the rod in PSI times 1 -000
62.4lbs

10. A rating of 300# refers to a flange's...
Remove any paint or rust.
The Evaporator
Discharge
Pressure Rating

11. Which one of the following measures and takes action?
Hydrostatic
4 1/2'(inch)
Controller
Sch 40

12. The treatment of liquids in motion is known as...
3.1416
Coating
Hydraulics
Dry expansion type

13. Which of the following is NOT a reason for using cutting oil when threading pipe?
falls
Forced convection - because the FAN forces convection!
To protect the threads from rust.
Fuel - Heat - Oxygen

14. The control point adjustment on a receiver is used to change the _______________.
100% of the rated capacity
Ground Fault Circuit Interrupter
Eccentric reducer (flat on top)
set point

15. What does the evaporator do?
Eccentric reducer (flat on top)
protect worker safety and health
On low side of the system and expands liquid to low pressure gas.
Prevailing wind speed and direction - environmental concerns - zoning requirements

16. OD for 4'(inch)

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17. What should be done first when preparing a copper joint?
Divide the diameter by half 4 times - put the 2nd and 4th number together to get the answer. Example - 6'(inch) 45 would be - 6 - 3 - 1 1/2 and 3/4. Answer 3 3/4'(inch)
Clean all surfaces
180
Point at the base and sweep the base with the extinguisher

18. Which of the following is sometimes used as a shielding gas in the GTAW process?
Ground Fault Circuit Interrupter
Flash Tank
Argon
hydrometer

19. What is on the low side of the vapor compression cycle?
Type K
The Evaporator
(Total Height - Elevation) * .433 = psig
231

20. OD for 6'(inch)

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21. A single line drawing of a piping system represents the...
Allow moisture to escape
Center of the pipe
Clean all surfaces
After cutting

22. OSHA was enacted to...
30 Degrees
protect worker safety and health
Up and Down
Bumping

23. The function of a steam trap is to prevent the flow of ________________ - while allowing condensate and non-condensable gases to pass through.
Multiply the length of the hypotenuse of the roll and the set by 1.414
Groove
Increase
Steam

24. What type of Copper tubing is not identified by color on the tubing itself?
14.7psia - always in PSI-A
.075lbs
soft tempered
Backflow preventer

25. Calculate head pressure in a section of vertical pipe?
The tensile strength of the rod in PSI times 1 -000
Sensor
Height * .433 = psig
the core

26. What is the standard pressure range for a pneumatic signal?
Height * .433 = psig
25' from any worker
Neutral
3 to 15 psi

27. The sum of atmospheric and gauge pressure is known as __________ pressure.
3 to 15 psi
Cavitation
Capillary action
Absolute

28. In the cooling cycle - which component throttles the flow of refrigerant?
Expansion Device
Arrange a wire rope clamp so that the dead end has the U bolts
25 feet
Yellow.. think Dee Double U is yelloWWW

29. The density of water is...
soft tempered
cool and lubricate the die
BCuP - Stands for Brazed Copper Phosphorus
62.4

30. A schematic drawing is...
Not to scale - does not show locations of equipment. It shows pipe size and flow.
2 3/8'(inch)
In the direction of flow
Large volumes of condensate flash back to liquid in the tank so it removes trapped steam from the condensate.

31. OD for 2'(inch)

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32. Which of the following is NOT acceptable as part of a personal fall arrest system?
blow the valves for a moment
Erratic readings
Forced convection - because the FAN forces convection!
Body belts

33. Exits from a trench 150' long and 4' deep must be located within how many feet of a worker in the trench?
25 feet
(Total Height - Elevation) * .433 = psig
The tensile strength of the rod in PSI times 1 -000
set point

34. To sense the temperature remotely from the thermostat location you would use...
Segmental
Remote bulb
Sch 80 Steel pipe
The science of heat transfer using water.

35. One cubic foot of water weighs?
200 lbs
62.4 pounds
The temperature that the joints are made - the flux and temperatures of the system
pi * radius squared

36. What is the purpose of the oxygen and acetylene regulators?
Provide oxygen barrier - stabilize and direct the force of the arc and to gather impurities in the form of slag.
Insufficient condensate drainage
Conduction - convection and radiant.
To reduce the pressure from the cylinders to safe and workable pressures

37. What is the maximum pressure for an acetylene hose?
Segmental
compression
15 PSI
62.4

38. Which of the following is the decimal equivalent of 5/8'(inch)
piping
.625
Anchors
discharge

39. A sling is weakest in which position?
BUT
.7854 x D squared
Choked position
Point at the base and sweep the base with the extinguisher

40. Calculate head pressure of a vertical pipe at specific elevations.
Fusion
(Total Height - Elevation) * .433 = psig
231
2 3/8'(inch)

41. Which of the following methods of access to a scaffold is prohibited?
Two Hole
Climbing the cross braces.
(Total Height - Elevation) * .433 = psig
On high side of the system and turns gas to liquid.

42. Before attaching regulators to an oxygen cylinder...
blow the valves for a moment
Insure progressively tighter fit
Capillary action
Spiral

43. When a liquid changes immediately to a vapor it is called...
pi * radius squared
4 to 20 milliamps
Flashing
the type of coating and current

44. A system which the refrigerant is in the shell and cools the fluid in the tubes is...
The impeller
Flooded
set point
Insert pipe into fitting and turn 1/4 turn and hold

45. Which of the following has the largest inside diameter?
Schedule 10
Arrange a wire rope clamp so that the dead end has the U bolts
Eccentric reducers - flat on top
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

46. What is the welding position 1 - on the electrode mean?
All position
100% of the rated capacity
Provide oxygen barrier - stabilize and direct the force of the arc and to gather impurities in the form of slag.
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

47. A valve on the suction side of the pump should be...
Multiply the length of the hypotenuse of the roll and the set by 1.414
Quarter
Before the strainer and fully open.
To chemically prepare the pieces for soldering

48. What is the sum of all angles in a triangle?
180
West of the building
10 feet
1/2 BTU

49. In a Hydronic heating system - units at the top of the system not heating are likely to be...
Air Bound
Hydrostatics
Purge the line when brazing
Guide - Anchor - Guide

50. Since _______________ is virtually incompressible - pressure has little effect on its volume.
5 9/16'(inch)
Water
Quarter
Height * .433 = psig