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 neutral reading on the PH scale is...
Insert pipe into fitting and turn 1/4 turn and hold
Spiral
7.0
lower hook

2. A system which the refrigerant is in the shell and cools the fluid in the tubes is...
Schedule 10
Alloying
return fitting
Flooded

3. Which of the following constants are used when working with circles and areas?
Climbing the cross braces.
Two Hole
.01745 - 3.1416 - and .7854
180

4. If the travel of a 45 degree offset is known - what formula can be used to find the advance?
.707 x Travel
1
Pneumatics
Thermostatic - Thermodynamic and Mechanical

5. The leading cause of on-the-job deaths in the construction industry is _______________.
galvanized
Anchors
falls
Alloying

6. An up-feed steam heating system has the heating units...
Allow moisture to escape
Above the main
Climbing the cross braces.
Quarter

7. Why is it necessary to use flux on a soldered joint?
To chemically prepare the pieces for soldering
Absolute
Groove
the type of coating and current

8. Capillary action is used in...
7.0
MAPP - acetylene - and propane
Solder joints
10 feet

9. Although the model codes usually say the melting point of a brazing alloy must be at least 1000º F - the technical temperature specified by the Copper Development Association and the American Welding Society is __________ degrees Fahrenheit.
840
Expansion loop.
Softens it
galvanized

10. How do you determine gear ratios?

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

11. In a refrigeration system a condensable gas is...
Dry expansion type
Ammonia
1
On low side of the system and expands liquid to low pressure gas.

12. When selecting a hanger for a piping system you should consider...
hydrometer
To reduce the pressure from the cylinders to safe and workable pressures
The system temperature - thermal and dynamic movement of the pipe and vibration.
To chemically prepare the pieces for soldering

13. What are the three types of steam traps?
13/16'(inch)
Thermostatic - Thermodynamic and Mechanical
Blue... think b-LLLLue
Globe valve

14. When brazing for medical gas or refrigeration always...
Purge the line when brazing
Crimson... think aCRimson
Anchors
Alloying

15. A rating of 150# refers to a flange's...
Expansion loop.
75 degrees - also 4 to 1
4 to 20 milliamps
Pressure rating

16. The anode rod used in a hot water heater to protect it from corrosion is made of...
Steam
.491lbs
Quarter
Magnesium

17. What is the expansion and compression of water vapor in a pump?
1
Water
250 degrees
Cavitation

18. When should a person designated as an attendant attempt to rescue a worker that is trapped?
Never
cool and lubricate the die
galvanized
Arrange a wire rope clamp so that the dead end has the U bolts

19. The face to center measurement of any welded angle fitting equals...
Clean all surfaces
tangent 1/2 angle x radius
Notify response team and allow them to rescue.
Conduction - convection and radiant.

20. Calculate head pressure of a vertical pipe at specific elevations.
1/2 BTU
4 1/2'(inch)
Spiral
(Total Height - Elevation) * .433 = psig

21. What has the largest effect on pump alignment?
With the weld at a 45 degree angle
Notify response team and allow them to rescue.
Pipe strain
Hazard prevention and control.

22. When a pipe size is decreased by half - the carrying capacity of the pipe decreases by...
Remove the packing
Quarter
Never
Roller hangers

23. Since _______________ is virtually incompressible - pressure has little effect on its volume.
Cavitation
Water
2.31ft
Bumping

24. When loosening the bolts on a flange one should...
steam and condensate flowing in the same direction
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.
The temperature that the joints are made - the flux and temperatures of the system
Loosen the far bolts first

25. What should be done first when preparing a copper joint?
Clean all surfaces
Air
BCuP - Stands for Brazed Copper Phosphorus
Ammonia

26. To determine the set on a 45 degree offset you would multiply the travel by...
.707
14.7 psia
Beam clamp
When a large volume of condensate is generated

27. Horizontal steam supply piping should be reduced in size by using...
Guide - Anchor - Guide
Eccentric reducer (flat on top)
231
the core

28. Soldered joints should never be used on systems above...
(Total Height - Elevation) * .433 = psig
Two Hole
250 degrees
The flux is in the filler material

29. To figure the end-to-end measurement of a piece of pipe when the end-to-end center measurement is known the...
dry expansion
take-off must be subtracted from the end-to-center measurement.
.625
.7854 x D squared

30. Which of the following has the largest inside diameter?
Schedule 10
foot valve
Axis of pipe should be on a 45 degree
Large volumes of condensate flash back to liquid in the tank so it removes trapped steam from the condensate.

31. A fan coil uses ______ to distribute heating or cooling to the space.
5 9/16'(inch)
The science of heat transfer using water.
Forced convection - because the FAN forces convection!
Provide oxygen barrier - stabilize and direct the force of the arc and to gather impurities in the form of slag.

32. To fabricate a 60 degree elbow from a 90 you would...
Level the 90 in horizontal position determine inside arc - backside arc and face to center dimensions for 60 degree elbow - mark and cut
75 degrees - also 4 to 1
The science of heat transfer using water.
To chemically prepare the pieces for soldering

33. Why is it necessary to use roller hangers?
To provide movement cause from a change in temperature
1728
Pressure rating
To allow for thermal movement

34. Steam condensate lines should be installed on...
The system temperature - thermal and dynamic movement of the pipe and vibration.
Material Safety Data Sheet
Large end to smaller end to center(bull)
Roller hangers

35. What is Hydronics?
Fuse
Ammonia
To reduce the pressure from the cylinders to safe and workable pressures
The science of heat transfer using water.

36. The color code for DWV copper is...
Green... think KKelly GREEN
The science of heat transfer using water.
Solder joints
Yellow.. think Dee Double U is yelloWWW

37. Which one of the following measures and takes action?
Controller
Body belts
pi * radius squared
zinc

38. The specific gravity of a gas is relative to the specific weight of _______________ - which has a specific gravity of one.
The same ID as the branch
Air
Green
.491lbs

39. When gripping a pipe with a pipe wrench - the wrench should be adjusted so the pipe is...
36'(inch)
Blue... think b-LLLLue
.707 x Travel
near the middle of the jaws

40. What is the purpose for a weep hole in a saddle pad?
Allow moisture to escape
Increase
7.48
To reduce the pressure from the cylinders to safe and workable pressures

41. How much heat is required to raise 1/2 pound of water 1 degree F?
sewage
maximum rated capacity
1/2 BTU
4 times

42. The combining of more than one metal is...
Its cheaper!
Alloying
Depends on the desired action if the disc or plug becomes detatched from the stem. (Fail open or Fail closed)
Magnesium

43. What is the main reason for the taper on a pipe thread?
On high side of the system and turns gas to liquid.
Spiral
Spiral Wound
Insure progressively tighter fit

44. What causes water to move in a Hydronic system?
Insufficient condensate drainage
To reduce the pressure from the cylinders to safe and workable pressures
The pump creates a differential in pressure that moves the water.
Argon

45. What is the sum of all angles in a triangle?
Globe
Discharge
Conduction - convection and radiant.
180

46. One cubic foot of water weighs?
maximum rated capacity
62.4 pounds
7.0
2 3/8'(inch)

47. What would be the result of an incorrectly installed orifice plate?
Spiral Wound
Roller hangers
Erratic readings
Pressure Rating

48. The only entity that has the responsibility and authority to appoint the competent person is...
Roller hangers
Climbing the cross braces.
1:48 - because 1/4 of an inch is 1/48th of a foot
the employer

49. Oil is used on a pipe machine to...
200 lbs
Crimson... think aCRimson
cool and lubricate the die
blow the valves for a moment

50. An ejector pump is typically used to pump __________.
The stud bolt is stronger than a machine bolt of the same size and material.
Material Safety Data Sheet
sewage
4 times