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. Which of the elements of a wire rope aid in absorbing '(inch)Shock Loads'(inch)?
no valves permitted
the core
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)
25 feet

2. The color code for type '(inch)K'(inch) copper is?
14.7 psia
Expansion Device
Center of the pipe
Green

3. What does the evaporator do?
sewage
On low side of the system and expands liquid to low pressure gas.
Blue... think b-LLLLue
Anchors

4. When a pipe size is decreased by half - the carrying capacity of the pipe decreases by...
The temperature that the joints are made - the flux and temperatures of the system
The science of heat transfer using water.
Quarter
Equalizing line

5. The face to center measurement of any welded angle fitting equals...
tangent 1/2 angle x radius
Flux
The temperature that the joints are made - the flux and temperatures of the system
the employer

6. One cubic foot of water weighs?
return fitting
62.4 pounds
To allow for thermal movement
OD

7. A schematic drawing is...
1728
Bumping
Spring hanger
Not to scale - does not show locations of equipment. It shows pipe size and flow.

8. Zinc chills or metal fume fever are caused from welding on __________ steel.
Point at the base and sweep the base with the extinguisher
1:48 - because 1/4 of an inch is 1/48th of a foot
Backflow preventer
galvanized

9. When a liquid changes immediately to a vapor it is called...
Controller
Flashing
To protect the threads from rust.
2 and 1

10. In a piping installation allowing for expansion in two directions - how should the anchor(s) and guide(s) be positioned relative to each other?
Guide - Anchor - Guide
Snubber
Clean all surfaces
Raise the load

11. What is the best gasket to use on a flanged joint on medium pressure steam?
the employer
25' from any worker
Pressure rating
Spiral Wound

12. To determine the face to center measurement of a long radius 90 degree elbow - multiply the pipe size by...
Hydrostatics
Two Hole
1.5
return fitting

13. Which of the following is NOT a reason for using cutting oil when threading pipe?
To protect the threads from rust.
falls
ALWAYS
dry expansion

14. With a high pressure valve you should never _____ under pressure.
Valve
Globe valve
Remove the packing
Hazard prevention and control.

15. What is the formula to figure the area of a circle?
Remove any paint or rust.
1:48 - because 1/4 of an inch is 1/48th of a foot
Anchors
radius squared times PI

16. A vent is not needed on a condensate receiver when...
Mechanical return is used.
All position
blow the valves for a moment
Strainer

17. The combining of more than one metal is...
4 times
Pressure rating
Bumping
Alloying

18. Which of the following is NOT a reason to use stud bolts instead of machine bolts for bolting flanged piping joints?
return fitting
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
The stud bolt is stronger than a machine bolt of the same size and material.
6 5/8'(inch)

19. A triple-duty valve is installed...
Yellow.. think Dee Double U is yelloWWW
1
Mechanical return is used.
In the hot water heating pumps discharge piping.

20. Annealing copper...
Discharge
Increase the pressure when the temperature increases
Tagged and removed from service.
Softens it

21. What should the outside attendant do to rescue a worker who shows physiological effects of exposure in a confined space?
Vaporization
Notify response team and allow them to rescue.
Globe
Clove hitch with a half hitch

22. OD for 8'(inch)

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

24. A tag line should be used on a crane lift...
.7854 x D squared
Magnesium
Strainer
ALWAYS

25. 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.
dry expansion
The flow of a liquid into a small space
Clean all surfaces
Flashing

26. What type of sensor is directly in the process stream?
Spiral
Immersion sensor
Large end to smaller end to center(bull)
the type of coating and current

27. What is the purpose of the oxygen and acetylene regulators?
Cavitation
After cutting
All the way to the shoulder
To reduce the pressure from the cylinders to safe and workable pressures

28. What type of flame should be used to cut carbon steel?
Air
hydrometer
Neutral
discharge

29. What is the welding position 3 - on the electrode mean?
All position
Flat position only
orthographic
Height * .433 = psig

30. What is the expansion and compression of water vapor in a pump?
2.31ft
Cavitation
lower hook
To allow for thermal movement

31. Since _______________ is virtually incompressible - pressure has little effect on its volume.
The tubing has been cleaned for oxygen service
Water
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
The flow of a liquid into a small space

32. To fabricate a 60 degree elbow from a 90 you would...
Condensate pump size
sewage
Level the 90 in horizontal position determine inside arc - backside arc and face to center dimensions for 60 degree elbow - mark and cut
Schedule 10

33. 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.
Flash Tank
Before the strainer and fully open.
Fuel - Heat - Oxygen

34. What would be the result of an incorrectly installed orifice plate?
Crimson... think aCRimson
Fuel - Heat - Oxygen
The type of coating and current
Erratic readings

35. The specific weight of air and water is...
.135 cu ft
Remove any paint or rust.
true isometric
1

36. What type of expansion joint does NOT utilize mechanical movement?
Expansion loop.
OD
Two Hole
2 3/8'(inch)

37. Which one of the following measures and takes action?
Expansion Device
Controller
Eccentric reducer (flat on top)
212 degrees F

38. The 6G welding position is...
With the weld at a 45 degree angle
Water
7.0
.625

39. Where should the high pressure condensate be piped to before entering the receiver?
Flash Tank
Expansion loop.
14.7 psia
Discharge

40. What is the formula to calculate thermal expansion?

41. Which of the following methods of access to a scaffold is prohibited?
Climbing the cross braces.
Erratic readings
Type K
1 foot

42. A concentric reducer could be used to connect to a horizontal pump _______________ line.
The system temperature - thermal and dynamic movement of the pipe and vibration.
Pressuretrol
Hydrostatics
Discharge

43. When arranging weld coupons for testing position 6G...
.075lbs
Climbing the cross braces.
Axis of pipe should be on a 45 degree
Pressure Rating

44. Which rigging configuration has the greatest sling strength?
.433psi
Choked position
Flash Tank
Basket

45. A dielectric fitting should be used on...
840
steel to copper joints
Waterlogged
Groove

46. There are __________ gallons in a cubic foot.
West of the building
231
4 to 20 milliamps
7.48

47. When leaning a ladder against an object - the ladder should be at an approximate angle of __________ degrees.
Dog Everything
75 degrees - also 4 to 1
Continuously
Segmental

48. An abrasive wheel should never run faster than it...
To chemically prepare the pieces for soldering
Hazard prevention and control.
maximum rated capacity
Air Bound

49. What size hole should be cut into a main to saddle IN a smaller pipe?
3 1/2'(inch)
The same OD as the branch
Purge the line when brazing
Controller

50. Steam supply using parallel flow is...
14'(inch)
Spiral
steam and condensate flowing in the same direction
.491lbs