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. To sense the temperature remotely from the thermostat location you would use...
return fitting
Remote bulb
25 feet
Ball joint - Bellows Joint and Packed Joint

2. Ladders with visible defects - such as broken rungs - cracked side rails - or broken steps must be...
After cutting
Tagged and removed from service.
Air
Depends on the desired action if the disc or plug becomes detatched from the stem. (Fail open or Fail closed)

3. If the architectural scale is 1/4'(inch) equals 1 foot - the ratio would be...
When a large volume of condensate is generated
1:48 - because 1/4 of an inch is 1/48th of a foot
Large end to smaller end to center(bull)
Raise the load

4. 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.
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)
Dry expansion type
Point thumb up
Bumping

5. What is used to soften PVC and remove the gloss?
Primer
Ground Fault Circuit Interrupter
3.1416
radius squared times PI

6. How far should a copper tube be inserted into a cup for a brazed joint?
All the way to the shoulder
1:48 - because 1/4 of an inch is 1/48th of a foot
Expansion Device
15 Feet

7. What type of expansion joint does NOT utilize mechanical movement?
Expansion loop.
Remove the packing
To protect the threads from rust.
Expansion Device

8. What does the G stand for in the 2G - 5G and 6G weld positions?
25' from any worker
6 5/8'(inch)
Dog Everything
Groove

9. A mixing valve has ___ inlets and ___ outlets.
34 feet
2 and 1
Water
Above the main

10. Which of the elements of a wire rope aid in absorbing '(inch)Shock Loads'(inch)?
14'(inch)
the core
.707 x Travel
Remove the packing

11. When loosening the bolts on a flange one should...
200 lbs
Discharge
Crimson... think aCRimson
Loosen the far bolts first

12. Horizontal steam supply piping should be reduced in size by using...
Eccentric reducer (flat on top)
Blue... think b-LLLLue
Primer
Flat position only

13. The change in state from solid to liquid is known as...
2 3/8'(inch)
1 foot
Fusion
Segmental

14. The symbol for pi is equivalent to...
3.1416
.433psi
Expansion loop.
Flat and horizontal positions

15. One foot of water exerts...
Act as a safety device to shut off the motor if the operator's foot is removed from the switch.
falls
In a pressure gauge
.433psi

16. In a piping installation allowing for expansion in two directions - how should the anchor(s) and guide(s) be positioned relative to each other?
Hazard prevention and control.
soft tempered
Point at the base and sweep the base with the extinguisher
Guide - Anchor - Guide

17. What occurs in a flash tank?
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.
Large volumes of condensate flash back to liquid in the tank so it removes trapped steam from the condensate.
250 degrees
Insure progressively tighter fit

18. In a refrigeration system a condensable gas is...
Air Bound
Ammonia
Spiral Wound
blow the valves for a moment

19. The treatment of liquids at rest is known as...
Material Safety Data Sheet
Hydrostatics
Axis of pipe should be on a 45 degree
Up and Down

20. Momentarily closing the starting switch to check the rotation of the pump is known as __________ the pump.
Hydraulics
Argon
Air
Bumping

21. What do the first two digits mean in E7018 electrodes?
.707
Capillary action
1.25'(inch)
The tensile strength of the rod in PSI times 1 -000

22. The best method to ensure that a plastic joint is made properly - you should...
Basket
Ground Fault Circuit Interrupter
near the middle of the jaws
Insert pipe into fitting and turn 1/4 turn and hold

23. What has the largest effect on pump alignment?
Capillary action
.0361
Insert pipe into fitting and turn 1/4 turn and hold
Pipe strain

24. A direct acting thermostat is used to...
Increase the pressure when the temperature increases
compression
Softener
Spiral

25. Which one of the following alloys does not require flux when brazing copper to copper joints?
Strainer
Anchors
BCuP - Stands for Brazed Copper Phosphorus
After cutting

26. Standard atmospheric pressure at sea level is _____...
.7854 x D squared
14.7 psia
30 Degrees
Fuse

27. A __________ displacement pump discharges a definite quantity of liquid for each cycle.
Positive
The same ID as the branch
On high side of the system and turns gas to liquid.
1

28. For an extension ladder to be at the correct angle for safe use on a working surface 20ft high. The ladder must be located how many feet away from the base?
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.
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)
Steam
The system temperature - thermal and dynamic movement of the pipe and vibration.

29. Which of the following has the largest inside diameter?
212 degrees F
Hydraulics
Schedule 10
Valve

30. Oil is used on a pipe machine to...
Neutral
Hazard prevention and control.
.433psi
cool and lubricate the die

31. OD for 4'(inch)

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32. The type of drawing that most closely resembles an object as the eye would see it is referred to as a/an __________ drawing.
true isometric
the type of coating and current
The pump creates a differential in pressure that moves the water.
Coating

33. The proper way to extinguish a fire is to...
NEVER!
Point at the base and sweep the base with the extinguisher
Sensor
The tubing has been cleaned for oxygen service

34. When arranging weld coupons for testing position 6G...
foot valve
5 9/16'(inch)
Axis of pipe should be on a 45 degree
galvanized

35. When brazing for medical gas or refrigeration always...
The flow of a liquid into a small space
Ball joint - Bellows Joint and Packed Joint
Purge the line when brazing
Cavitation

36. What is the formula to figure the area of a circle?
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.
radius squared times PI
2 and 1
Spiral Wound

37. Zinc chills or metal fume fever are caused from welding on __________ steel.
Above the main
1/2 BTU
galvanized
Ball joint - Bellows Joint and Packed Joint

38. What is the sum of all angles in a triangle?
180
Purge the line when brazing
Two Hole
BUT

39. A _______________ reamer should NOT be used with power operated pipe threading equipment
The tensile strength of the rod in PSI times 1 -000
All the way to the shoulder
Air Bound
Spiral

40. What causes water to move in a Hydronic system?
Ball joint - Bellows Joint and Packed Joint
Beam clamp
The pump creates a differential in pressure that moves the water.
bowline on a bight

41. Which is the correct formula for the area of a circle?
3 1/2'(inch)
Loosen the far bolts first
To reduce the pressure from the cylinders to safe and workable pressures
.7854 x D squared

42. How do you determine gear ratios?

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43. If you double pipe size the carrying capacity is increased...
Mechanical/Thermostatic
Fuse
Climbing the cross braces.
4 times

44. The pipe that connects the steam header to the boiler return connection is the...
2 3/8'(inch)
Valve
Solder joints
Equalizing line

45. .433 psig is equal to how high of a water column?
return fitting
1 foot
Immersion sensor
Air Bound

46. Which way should the bevel face on an orifice plate?
Down Stream
The same OD as the branch
Steam
Globe valve

47. Calculate head pressure in a section of vertical pipe?
9
protect worker safety and health
14'(inch)
Height * .433 = psig

48. What type of sensor is directly in the process stream?
Flat position only
Immersion sensor
The system temperature - thermal and dynamic movement of the pipe and vibration.
Bumping

49. Annealing copper...
Air
Groove
Softens it
All the way to the shoulder

50. Which of the following is NOT a reason for using cutting oil when threading pipe?
Sensor
3 to 15 psi
To protect the threads from rust.
When a large volume of condensate is generated