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. A dielectric fitting should be used on...
Bight - running end and standing part
Pipe strain
In the direction of flow
steel to copper joints

2. One atmosphere is equal to...
Snubber
the employer
14.7psia - always in PSI-A
.135 cu ft

3. The last two digits on an E-6010 electrode specify
The type of coating and current
1/2 BTU
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.
Large end to smaller end to center(bull)

4. A _______________ reamer should NOT be used with power operated pipe threading equipment
lower hook
36'(inch)
Spiral
7.48

5. When a pipe size is decreased by half - the carrying capacity of the pipe decreases by...
Not to scale - does not show locations of equipment. It shows pipe size and flow.
DWV
Quarter
Arrange a wire rope clamp so that the dead end has the U bolts

6. When gripping a pipe with a pipe wrench - the wrench should be adjusted so the pipe is...
near the middle of the jaws
Coating
Softener
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.

7. The pipe size of a pipe changes from the ID to the OD on what pipe size?

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183

8. What type of flame should be used to cut carbon steel?
.075lbs
Purge the line when brazing
Neutral
Backflow preventer

9. When a cranes signaler's hand is pointed up with his finger moving in a circle it means to...
Raise the load
Softener
Crimson... think aCRimson
Too fast of a travel rate

10. A rating of 150# refers to a flange's...
Schedule 10
231
Pressure rating
25 feet

11. To properly align a flange you must perform what is commonly called a ______ hole...
protect worker safety and health
Two Hole
.707
Water

12. To figure the end-to-end measurement of a piece of pipe when the end-to-end center measurement is known the...
no valves permitted
pi * radius squared
(Total Height - Elevation) * .433 = psig
take-off must be subtracted from the end-to-center measurement.

13. The amount of heat necessary bring about a change of state from solid to liquid or liquid to gas is known as _______________ heat.
Up and Down
Latent
Quarter
Large end to smaller end to center(bull)

14. When changing pipe sizes in the horizontal supply or return lines of a two-pipe hot water heating system use...
Eccentric reducers - flat on top
15 PSI
Manometer
.707 x Travel

15. What should be done to prepare a flange for the gasket installation?
Erratic readings
To chemically prepare the pieces for soldering
Point at the base and sweep the base with the extinguisher
Remove any paint or rust.

16. A neutral reading on the PH scale is...
7.0
near the middle of the jaws
4 times
tangent 1/2 angle x radius

17. Which of the following is NOT a reason to use stud bolts instead of machine bolts for bolting flanged piping joints?
radius squared times PI
compression
Hazard prevention and control.
The stud bolt is stronger than a machine bolt of the same size and material.

18. 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
piping
.491lbs
Neutral

19. What would be the result of an incorrectly installed orifice plate?
14.7 psia
Green... think KKelly GREEN
Roller hangers
Erratic readings

20. What is the purpose of the expansion joint in a steam system?
To provide movement cause from a change in temperature
zinc
The system temperature - thermal and dynamic movement of the pipe and vibration.
.491lbs

21. What has the largest effect on pump alignment?
Eccentric reducers - flat on top
Pipe strain
Latent
Dry expansion type

22. When a flux joint is overheated it will not...
The type of coating and current
The science of heat transfer using water.
Fuse
1728

23. In a typical residential air conditioning system - the evaporator is of the _______________ type - where the liquid refrigerant should be totally vaporized before it reaches the outlet of the evaporator.
Provide oxygen barrier - stabilize and direct the force of the arc and to gather impurities in the form of slag.
Quarter
Dry expansion type
30 Degrees

24. A concentric reducer could be used to connect to a horizontal pump _______________ line.
Loosen the far bolts first
To protect the threads from rust.
Segmental
Discharge

25. OD for 5'(inch)

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183

26. Why is it necessary to use flux on a soldered joint?
7.0
Green
To chemically prepare the pieces for soldering
In a pressure gauge

27. The change in state from solid to liquid is known as...
Pipe strain
Solder joints
Waterlogged
Fusion

28. The main cause of undercutting is...
6 5/8'(inch)
Pressure Rating
Too fast of a travel rate
foot valve

29. A device that mechanically attaches to the side of a flange on a beam is called a...
Beam clamp
handle will bend
On low side of the system and expands liquid to low pressure gas.
Insert pipe into fitting and turn 1/4 turn and hold

30. What is on the low side of the vapor compression cycle?
To reduce the pressure from the cylinders to safe and workable pressures
Loosen the far bolts first
The Evaporator
soft tempered

31. A triple-duty valve is installed...
Ammonia
In the hot water heating pumps discharge piping.
Mechanical/Thermostatic
When a large volume of condensate is generated

32. Calculate head pressure in a section of vertical pipe?
Body belts
Controller
Height * .433 = psig
steel to copper joints

33. Condensate lines should be pitched...
dry expansion
Loosen the far bolts first
1:48 - because 1/4 of an inch is 1/48th of a foot
In the direction of flow

34. Which of the following constants are used when working with circles and areas?
.01745 - 3.1416 - and .7854
cool and lubricate the die
Mechanical return is used.
4 1/2'(inch)

35. If the architectural scale is 1/4'(inch) equals 1 foot - the ratio would be...
The type of coating and current
1:48 - because 1/4 of an inch is 1/48th of a foot
Fuse
Waterlogged

36. What is the sum of all angles in a triangle?
62.4
Yellow.. think Dee Double U is yelloWWW
180
Valve

37. The maximum practical suction lift on positive displacement pumps is 22 feet and on centrifugal pumps it is __________ feet.
Hydraulics
an eccentric reducer flat on top
When a large volume of condensate is generated
15 Feet

38. What is the specific gravity of water?
Remote bulb
1
Eccentric reducers - flat on top
hydrometer

39. The final step in the galvanizing of pipe is to dip the pipe into a bath of molten _________?
zinc
Schedule 10
1.5
Prevailing wind speed and direction - environmental concerns - zoning requirements

40. A Hartford loop is used for...
Spiral
Protection for loss of water in the boiler.
Material Safety Data Sheet
Up and Down

41. Which of the following is sometimes used as a shielding gas in the GTAW process?
Argon
1:48 - because 1/4 of an inch is 1/48th of a foot
Choked position
9

42. To stop all crane movement the ______ signal should be used.
Dog Everything
The same OD as the branch
Basket
Spring hanger

43. In the cooling cycle - which component throttles the flow of refrigerant?
3 to 15 psi
8.33lbs
steam and condensate flowing in the same direction
Expansion Device

44. A valve on the suction side of the pump should be...
Before the strainer and fully open.
8.33 pounds
.075lbs
.491lbs

45. A cooling tower must have a ________ or be open-site.
Bumping
Backflow preventer
.135 cu ft
orthographic

46. One foot of water exerts...
To allow for thermal movement
When a large volume of condensate is generated
.433psi
supporter of combustion

47. What is the best valve for throttling?
On low side of the system and expands liquid to low pressure gas.
Up and Down
Before the strainer and fully open.
Globe

48. The last digit on a welding electrode refers to the __________ of the electrode.
Coating
1
.433psi
62.4 pounds

49. To fabricate a 60 degree elbow from a 90 you would...
8.33lbs
Level the 90 in horizontal position determine inside arc - backside arc and face to center dimensions for 60 degree elbow - mark and cut
Basket
Positive

50. Since _______________ is virtually incompressible - pressure has little effect on its volume.
Water
30 Degrees
The Evaporator
The type of coating and current