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. .433 psig is equal to how high of a water column?
1 foot
Height * .433 = psig
Pressuretrol
The same OD as the branch

2. When arranging weld coupons for testing position 6G...
Forced convection - because the FAN forces convection!
Dog Everything
dry expansion
Axis of pipe should be on a 45 degree

3. When lifting objects with sharp edges you should use a...
Raise the load
Softener
62.4lbs
Insert pipe into fitting and turn 1/4 turn and hold

4. Which of the following types of copper tube has the smallest wall thickness?
Pressuretrol
DWV
Mechanical return is used.
25' from any worker

5. Why is it necessary to use roller hangers?
Primer
Point at the base and sweep the base with the extinguisher
On high side of the system and turns gas to liquid.
To allow for thermal movement

6. What is the formula to calculate thermal expansion?

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7. The specific gravity of a gas is relative to the specific weight of _______________ - which has a specific gravity of one.
Air
Remote bulb
Climbing the cross braces.
Anchors

8. With a high pressure valve you should never _____ under pressure.
Allow moisture to escape
Remove the packing
The impeller
compression

9. An increase in pressure will cause the boiling point of water to ________...
Increase
Body belts
The temperature that the joints are made - the flux and temperatures of the system
soft tempered

10. What is the function of the covering on the electrodes during the process of '(inch)Shielded Metal Arc Welding'(inch)?
250 degrees
Raise the load
Provide oxygen barrier - stabilize and direct the force of the arc and to gather impurities in the form of slag.
Valve

11. A vent is not needed on a condensate receiver when...
.433psi
Mechanical return is used.
Erratic readings
7.0

12. If a pump is operating under static suction lift conditions - a __________ may be installed in the suction line to avoid losing the pump's prime each time the pump shuts off.
30 Degrees
34 feet
foot valve
Air

13. How much heat is required to raise 1/2 pound of water 1 degree F?
1:48 - because 1/4 of an inch is 1/48th of a foot
1/2 BTU
The stud bolt is stronger than a machine bolt of the same size and material.
.135 cu ft

14. A diamond on an instrumentation loop diagram encloses information concerning...
.135 cu ft
Air
Set point
Height * .433 = psig

15. What occurs in a flash tank?
galvanized
1 foot
Large volumes of condensate flash back to liquid in the tank so it removes trapped steam from the condensate.
Pressure Rating

16. A rating of 300# refers to a flange's...
blow the valves for a moment
falls
Expansion loop.
Pressure Rating

17. The face to center measurement of any welded angle fitting equals...
Red.. think M&M is RED
true isometric
set point
tangent 1/2 angle x radius

18. To properly align a flange you must perform what is commonly called a ______ hole...
maximum rated capacity
In the hot water heating pumps discharge piping.
Two Hole
The pump creates a differential in pressure that moves the water.

19. A vertical line in an isometric drawing represents...
A pry bar
Globe valve
Up and Down
The science of heat transfer using water.

20. Standard atmospheric pressure at sea level is _____...
Act as a safety device to shut off the motor if the operator's foot is removed from the switch.
14.7 psia
6 5/8'(inch)
Above the main

21. What does the crane signal with the index finger pointed forward in a swirling motion signal?
Raise the load
2 and 1
15 Feet
.707

22. A Hartford loop is used for...
Protection for loss of water in the boiler.
Bight - running end and standing part
Red.. think M&M is RED
Groove

23. OD for 4'(inch)

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24. What causes pressure drop?
Increase in friction
Spring hanger
100% of the rated capacity
Flash Tank

25. One pound of water pressure is equal to...
Primer
2.31ft
Sensor
Strainer

26. The ______ is used to protect the weld puddle from contamination in the SMAW process.
To reduce the pressure from the cylinders to safe and workable pressures
Flux
On low side of the system and expands liquid to low pressure gas.
Ammonia

27. Which of the following is sometimes used as a shielding gas in the GTAW process?
Dog Everything
Argon
the type of coating and current
Increase in friction

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

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29. The purpose of the foot switch on a power-operated pipe cutting and threading machine is to?

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30. The only entity that has the responsibility and authority to appoint the competent person is...
The type of coating and current
the employer
62.4 pounds
Guide - Anchor - Guide

31. The anode rod used in a hot water heater to protect it from corrosion is made of...
The science of heat transfer using water.
Not to scale - does not show locations of equipment. It shows pipe size and flow.
Magnesium
Vaporization

32. The change in state from solid to liquid is known as...
Fusion
Never
Flux
Flashing

33. Exits from a trench 150' long and 4' deep must be located within how many feet of a worker in the trench?
Controller
1.5
25 feet
Axis of pipe should be on a 45 degree

34. A device that mechanically attaches to the side of a flange on a beam is called a...
.625
Beam clamp
Point thumb up
piping

35. Which of the following is an essential element necessary to produce an ordinary fire?
Saturated
36'(inch)
Expansion loop.
Fuel - Heat - Oxygen

36. A sling is weakest in which position?
Yellow.. think Dee Double U is yelloWWW
1728
Choked position
Pneumatics

37. Ladders with visible defects - such as broken rungs - cracked side rails - or broken steps must be...
Flux
Guide - Anchor - Guide
The flux burns and the joint becomes ineffective
Tagged and removed from service.

38. What is the welding position 1 - on the electrode mean?
All position
On high side of the system and turns gas to liquid.
the core
100% of the rated capacity

39. Which of the following is NOT acceptable as part of a personal fall arrest system?
Flat position only
To allow for thermal movement
Segmental
Body belts

40. The sum of atmospheric and gauge pressure is known as __________ pressure.
Above the main
Absolute
Hydrostatic
The tensile strength of the rod in PSI times 1 -000

41. When should you ream the end of a pipe?
After cutting
34 feet
Multiply the length of the hypotenuse of the roll and the set by 1.414
Hydrostatics

42. If you double pipe size the carrying capacity is increased...
4 times
MAPP - acetylene - and propane
true isometric
1

43. How many 2'(inch) pipes can be supplied from a 6'(inch) header?
Raise the load
.707 x Travel
840
9

44. The function of a steam trap is to prevent the flow of ________________ - while allowing condensate and non-condensable gases to pass through.
Purge the line when brazing
Increase the pressure when the temperature increases
Steam
Continuously

45. An up-feed steam heating system has the heating units...
Yellow.. think Dee Double U is yelloWWW
5 9/16'(inch)
Above the main
Erratic readings

46. What are the three rope parts used in tying knots and hitches?
Bight - running end and standing part
Large volumes of condensate flash back to liquid in the tank so it removes trapped steam from the condensate.
Air
34 feet

47. A float and thermostatic trap is a...
radius squared times PI
Mechanical/Thermostatic
Air Bound
Sch 80 Steel pipe

48. Which type of orifice plate is designed to measure flow of liquids containing solids?
Segmental
Steam
The Evaporator
3 to 15 psi

49. What are 3 fuel gases used for heating pipe or tubing?
MAPP - acetylene - and propane
Level the 90 in horizontal position determine inside arc - backside arc and face to center dimensions for 60 degree elbow - mark and cut
A pry bar
Point at the base and sweep the base with the extinguisher

50. A schematic drawing is...
Not to scale - does not show locations of equipment. It shows pipe size and flow.
Increase in friction
Groove
.135 cu ft