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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. What is Hydronics?
near the middle of the jaws
The science of heat transfer using water.
62.4 pounds
dry expansion

2. Which of the following is the decimal equivalent of 5/8'(inch)
.625
1
Large volumes of condensate flash back to liquid in the tank so it removes trapped steam from the condensate.
Erratic readings

3. Why is it necessary to use flux on a soldered joint?
The type of coating and current
None
Insert pipe into fitting and turn 1/4 turn and hold
To chemically prepare the pieces for soldering

4. An up-feed steam heating system has the heating units...
36'(inch)
Above the main
Absolute
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)

5. A direct acting thermostat is used to...
Above the main
Backflow preventer
Ammonia
Increase the pressure when the temperature increases

6. Horizontal steam supply piping should be reduced in size by using...
8.33lbs
maximum rated capacity
Sch 40
Eccentric reducer (flat on top)

7. What does the term '(inch)never saddle a dead horse'(inch) mean?
Sensor
Arrange a wire rope clamp so that the dead end has the U bolts
8.33 pounds
Air

8. Annealing copper...
Softens it
Increase in friction
Increase
4 to 20 milliamps

9. An oil separator is required on systems using...
Flat and horizontal positions
Groove
Flooded
Ammonia

10. A concentric reducer could be used to connect to a horizontal pump _______________ line.
The Evaporator
Latent
discharge
Prevailing wind speed and direction - environmental concerns - zoning requirements

11. When loosening the bolts on a flange one should...
Softener
A pry bar
Loosen the far bolts first
14.7psia - always in PSI-A

12. The final step in the galvanizing of pipe is to dip the pipe into a bath of molten _________?
1:48 - because 1/4 of an inch is 1/48th of a foot
West of the building
zinc
Saturated

13. To figure the end-to-end measurement of a piece of pipe when the end-to-end center measurement is known the...
take-off must be subtracted from the end-to-center measurement.
Above the main
The tensile strength of the rod in PSI times 1 -000
10 feet

14. What causes water to move in a Hydronic system?
The pump creates a differential in pressure that moves the water.
DWV
Erratic readings
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

15. How much heat is required to raise 1/2 pound of water 1 degree F?
Notify response team and allow them to rescue.
With the weld at a 45 degree angle
1 5/16'(inch)
1/2 BTU

16. One gallon of water occupies how many cubic feet?
25 feet
Waterlogged
Water
.135 cu ft

17. The color code for ACR copper is...
14'(inch)
All the way to the shoulder
Crimson... think aCRimson
Point at the base and sweep the base with the extinguisher

18. A concentric reducer could be used to connect to a horizontal pump _______________ line.
Discharge
an eccentric reducer flat on top
no valves permitted
The system temperature - thermal and dynamic movement of the pipe and vibration.

19. What should the outside attendant do to rescue a worker who shows physiological effects of exposure in a confined space?
Purge the line when brazing
Notify response team and allow them to rescue.
maximum rated capacity
orthographic

20. You should never blow your clothes off with oxygen because oxygen is a/an
Groove
Type K
Waterlogged
supporter of combustion

21. When brazing for medical gas or refrigeration always...
Purge the line when brazing
Pressuretrol
To protect the threads from rust.
Spiral Wound

22. What size hole should be cut into a main to saddle IN a smaller pipe?
After cutting
The same OD as the branch
13/16'(inch)
Sch 80 Steel pipe

23. Which of the following has the largest inside diameter?
Equalizing line
Insufficient condensate drainage
To protect the threads from rust.
Schedule 10

24. The specific weight of air and water is...
1
Pneumatics
Fusion
Depends on the desired action if the disc or plug becomes detatched from the stem. (Fail open or Fail closed)

25. One pound of water pressure is equal to...
1.25'(inch)
2.31ft
In the hot water heating pumps discharge piping.
Sch 80 Steel pipe

26. What is the welding position 1 - on the electrode mean?
Alloying
Point at the base and sweep the base with the extinguisher
Arrange a wire rope clamp so that the dead end has the U bolts
All position

27. On a centrifugal pump what is rotated by the motor?
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
Type K
3 1/2'(inch)
The impeller

28. When changing pipe sizes in the horizontal supply or return lines of a two-pipe hot water heating system use...
Mechanical/Thermostatic
Air Bound
Eccentric reducers - flat on top
Neutral

29. Formula for area of a circle?
pi * radius squared
Flooded
Ammonia
14.7psia - always in PSI-A

30. When a loop is needed at any point between ends of a rope - the proper knot to tie is the...
Before the strainer and fully open.
bowline on a bight
Prevailing wind speed and direction - environmental concerns - zoning requirements
Fuse

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

32. 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
Steam
.135 cu ft
compression

33. A system which the refrigerant is in the shell and cools the fluid in the tubes is...
Steam
pi * radius squared
Pneumatics
Flooded

34. What is capillary action?
Set point
The flow of a liquid into a small space
10 feet
Latent

35. The maximum practical suction lift on positive displacement pumps is 22 feet and on centrifugal pumps it is __________ feet.
Erratic readings
15 Feet
To provide movement cause from a change in temperature
the core

36. Which rigging configuration has the greatest sling strength?
1
Immersion sensor
To reduce the pressure from the cylinders to safe and workable pressures
Basket

37. A single line drawing of a piping system represents the...
The Evaporator
Center of the pipe
Neutral
Sch 40

38. .433 psig is equal to how high of a water column?
Notify response team and allow them to rescue.
13/16'(inch)
1 foot
The science of heat transfer using water.

39. The main cause of undercutting is...
.075lbs
Too fast of a travel rate
OD
Flashing

40. What is the purpose of the oxygen and acetylene regulators?
All position
To reduce the pressure from the cylinders to safe and workable pressures
212 degrees F
8.33lbs

41. How high must you extend a ladder above the roof or deck?

42. What type of expansion joint does NOT utilize mechanical movement?
Expansion loop.
Two Hole
.707 x Travel
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

43. Use of air as a power source is known as...
cool and lubricate the die
Anchors
To allow for thermal movement
Pneumatics

44. One cubic foot of water weighs?
Discharge
62.4 pounds
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)
The impeller

45. Which of the following methods of access to a scaffold is prohibited?
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)
lower hook
set point
Climbing the cross braces.

46. The color code for type '(inch)K'(inch) copper is?
Green
Expansion Device
Schedule 10
Solder joints

47. For an extension ladder to be at the correct angle for safe use on a working surface 20ft high. The ladder must be located how many feet away from the base?
Dry expansion type
2 3/8'(inch)
Pressuretrol
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.

48. The letters MSDS stand for...
Sensor
Notify response team and allow them to rescue.
Two Hole
Material Safety Data Sheet

49. What does GFCI stand for?
Ground Fault Circuit Interrupter
1
With the weld at a 45 degree angle
true isometric

50. What is the standard pressure range for a pneumatic signal?
7.48
Loosen the far bolts first
62.4lbs
3 to 15 psi