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. What does a condenser do?
On high side of the system and turns gas to liquid.
With the weld at a 45 degree angle
The stud bolt is stronger than a machine bolt of the same size and material.
Beam clamp

2. When should a person designated as an attendant attempt to rescue a worker that is trapped?
Schedule 10
Purge the line when brazing
protect worker safety and health
Never

3. Horizontal steam supply piping should be reduced in size by using...
Insufficient condensate drainage
handle will bend
Eccentric reducer (flat on top)
Softener

4. One pound of water pressure is equal to...
Up and Down
2.31ft
Positive
100% of the rated capacity

5. The color code for ACR copper is...
The system temperature - thermal and dynamic movement of the pipe and vibration.
Crimson... think aCRimson
Pressure rating
The Evaporator

6. The weight of 1 cubic foot of water is...
62.4lbs
1 foot
Increase
Steam

7. To fabricate a 60 degree elbow from a 90 you would...
Remove the packing
return fitting
Magnesium
Level the 90 in horizontal position determine inside arc - backside arc and face to center dimensions for 60 degree elbow - mark and cut

8. One gallon of water occupies how many cubic feet?
Basket
.135 cu ft
bowline on a bight
Strainer

9. Which way should the bevel face on an orifice plate?
4 1/2'(inch)
Down Stream
compression
In the direction of flow

10. How much does 1 cubic foot of air weigh?
.075lbs
Mechanical/Thermostatic
Expansion loop.
14.7 psia

11. What type of valve should be used to bypass a control valve?
true isometric
Globe valve
Tagged and removed from service.
The same ID as the branch

12. The centerline of piping in a horizontal plane on an isometric drawing is most generally drawn at __________ degrees from the horizontal.
30 Degrees
.433psi
Axis of pipe should be on a 45 degree
Controller

13. Which of the elements of a wire rope aid in absorbing '(inch)Shock Loads'(inch)?
the core
Pressure rating
3 1/2'(inch)
2.31ft

14. OD for 1/2'(inch)

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15. What is on the low side of the vapor compression cycle?
The Evaporator
Insert pipe into fitting and turn 1/4 turn and hold
Vaporization
Never

16. Which rigging configuration has the greatest sling strength?
14.7psia - always in PSI-A
Basket
take-off must be subtracted from the end-to-center measurement.
Insufficient condensate drainage

17. A fan coil uses ______ to distribute heating or cooling to the space.
3.1416
Flooded
Forced convection - because the FAN forces convection!
Increase in friction

18. What is used to soften PVC and remove the gloss?
10 feet
Primer
The system temperature - thermal and dynamic movement of the pipe and vibration.
the core

19. The most that a crane should be loaded is...
Cavitation
100% of the rated capacity
Conduction - convection and radiant.
1 foot

20. If the travel of a 45 degree offset is known - what formula can be used to find the advance?
maximum rated capacity
.707 x Travel
14.7psia - always in PSI-A
an eccentric reducer flat on top

21. On a centrifugal pump what is rotated by the motor?
Set point
The impeller
The stud bolt is stronger than a machine bolt of the same size and material.
The pump creates a differential in pressure that moves the water.

22. What does the G stand for in the 2G - 5G and 6G weld positions?
Groove
Hydraulics
8.33 pounds
radius squared times PI

23. In one cubic foot there are _________ cubic inches.
Sch 80 Steel pipe
To allow for thermal movement
1728
Solder joints

24. The last digit on a welding electrode refers to the __________ of the electrode.
Softener
Coating
To chemically prepare the pieces for soldering
2 3/8'(inch)

25. The change in state from a liquid to gas is known as...
Vaporization
maximum rated capacity
Dry expansion type
Level the 90 in horizontal position determine inside arc - backside arc and face to center dimensions for 60 degree elbow - mark and cut

26. What type of copper tubing joint requires use of a ferrule?
3 to 15 psi
1 5/16'(inch)
To chemically prepare the pieces for soldering
compression

27. The best knot to use when lifting pipe vertically is the...
Clove hitch with a half hitch
The flux burns and the joint becomes ineffective
MAPP - acetylene - and propane
The stud bolt is stronger than a machine bolt of the same size and material.

28. What is the maximum pressure for an acetylene hose?
15 PSI
Basket
Blue... think b-LLLLue
hydrometer

29. The letters MSDS stand for...
Increase the pressure when the temperature increases
The science of heat transfer using water.
zinc
Material Safety Data Sheet

30. When arranging weld coupons for testing position 6G...
In the hot water heating pumps discharge piping.
Axis of pipe should be on a 45 degree
Globe
Basket

31. How far should a copper tube be inserted into a cup for a brazed joint?
All the way to the shoulder
On high side of the system and turns gas to liquid.
Increase in friction
3 to 15 psi

32. Calculate head pressure in a section of vertical pipe?
Large volumes of condensate flash back to liquid in the tank so it removes trapped steam from the condensate.
protect worker safety and health
Roller hangers
Height * .433 = psig

33. When loosening the bolts on a flange one should...
Flat and horizontal positions
7.48
Loosen the far bolts first
62.4

34. A concentric reducer could be used to connect to a horizontal pump _______________ line.
Cavitation
NEVER!
34 feet
discharge

35. What is the welding position 1 - on the electrode mean?
1 5/16'(inch)
All position
sewage
Height * .433 = psig

36. The last two digits on an E-6010 electrode specify...
Flash Tank
Controller
1.5
the type of coating and current

37. To properly align a flange you must perform what is commonly called a ______ hole...
75 degrees - also 4 to 1
the employer
Two Hole
Its cheaper!

38. A direct acting thermostat is used to...
1.5
Guide - Anchor - Guide
maximum rated capacity
Increase the pressure when the temperature increases

39. 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.
With the weld at a 45 degree angle
Ammonia
To chemically prepare the pieces for soldering
dry expansion

40. A neutral reading on the PH scale is...
7.0
Choked position
Sch 80 Steel pipe
34 feet

41. What does a + plus sign mean?
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
Pipe penetration
Coating
Loosen the far bolts first

42. What is the main reason for the taper on a pipe thread?
Prevailing wind speed and direction - environmental concerns - zoning requirements
Insure progressively tighter fit
Globe
3 to 15 psi

43. A device that mechanically attaches to the side of a flange on a beam is called a...
Dry expansion type
Before the strainer and fully open.
4 1/2'(inch)
Beam clamp

44. What occurs in a flash tank?
Spring hanger
ALWAYS
Fusion
Large volumes of condensate flash back to liquid in the tank so it removes trapped steam from the condensate.

45. A sling is weakest in which position?
Flat and horizontal positions
Quarter
no valves permitted
Choked position

46. .433 psig is equal to how high of a water column?
1.5
In the hot water heating pumps discharge piping.
1 foot
14.7 psia

47. The pipe fitting that makes a 180 degree turn is called a/an?
West of the building
return fitting
The flux is in the filler material
Anchors

48. What is Hydronics?
Globe
ALWAYS
To allow for thermal movement
The science of heat transfer using water.

49. Steam supply using parallel flow is...
250 degrees
steam and condensate flowing in the same direction
return fitting
30 Degrees

50. The last two digits on an E-6010 electrode specify
The type of coating and current
soft tempered
Pressure Rating
On low side of the system and expands liquid to low pressure gas.