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 has the largest effect on pump alignment?
Pipe strain
Equalizing line
15 PSI
the employer

2. When a cranes signaler's hand is pointed up with his finger moving in a circle it means to...
14'(inch)
Dry expansion type
Point thumb up
Raise the load

3. A simple example of a lever is...
Magnesium
A pry bar
the core
Mechanical/Thermostatic

4. You should never blow your clothes off with oxygen because oxygen is a/an
supporter of combustion
Point thumb up
Increase the pressure when the temperature increases
Flashing

5. A diamond on an instrumentation loop diagram encloses information concerning...
7.0
Flash Tank
Set point
BCuP - Stands for Brazed Copper Phosphorus

6. What is the specific gravity of water?
All position
Controller
1
7.0

7. Soldered joints should never be used on systems above...
100% of the rated capacity
3.1416
return fitting
250 degrees

8. Which of the following is NOT a reason for using cutting oil when threading pipe?
To protect the threads from rust.
The impeller
The flux burns and the joint becomes ineffective
1/2 BTU

9. One atmosphere is equal to...
.075lbs
Loosen the far bolts first
14.7psia - always in PSI-A
West of the building

10. OD for 1/2'(inch)

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11. The proper way to extinguish a fire is to...
62.4
Sch 40
Point at the base and sweep the base with the extinguisher
falls

12. When loosening the bolts on a flange one should...
Neutral
3.1416
Steam
Loosen the far bolts first

13. A fan coil uses ______ to distribute heating or cooling to the space.
Forced convection - because the FAN forces convection!
.7854 x D squared
discharge
The science of heat transfer using water.

14. Where should the pressure enter a globe valve?
Primer
Conduction - convection and radiant.
Above the main
Depends on the desired action if the disc or plug becomes detatched from the stem. (Fail open or Fail closed)

15. A valve on the suction side of the pump should be...
The Evaporator
Before the strainer and fully open.
Provide oxygen barrier - stabilize and direct the force of the arc and to gather impurities in the form of slag.
1/2 BTU

16. The 6G welding position is...
galvanized
With the weld at a 45 degree angle
Softens it
231

17. A direct acting thermostat is used to...
Saturated
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)
.491lbs
Increase the pressure when the temperature increases

18. One pound of water pressure is equal to...
Segmental
Fuel - Heat - Oxygen
To reduce the pressure from the cylinders to safe and workable pressures
2.31ft

19. A cooling tower must have a ________ or be open-site.
radius squared times PI
Backflow preventer
bowline on a bight
Erratic readings

20. One cubic foot of water weighs?
near the middle of the jaws
Raise the load
62.4 pounds
30 Degrees

21. A sling is weakest in which position?
.01745 - 3.1416 - and .7854
Equalizing line
Choked position
Discharge

22. What is the standard pressure range for a pneumatic signal?
3 to 15 psi
Latent
handle will bend
To reduce the pressure from the cylinders to safe and workable pressures

23. What causes water hammer?
Snubber
Not to scale - does not show locations of equipment. It shows pipe size and flow.
Insufficient condensate drainage
In the direction of flow

24. When is it safe to remove the old packing from a valve that is under pressure?
Latent
Capillary action
Mechanical/Thermostatic
NEVER!

25. The specific weight of mercury is...
Backflow preventer
Pressuretrol
Basket
.0361

26. The last digit on a welding electrode refers to the __________ of the electrode.
Mechanical/Thermostatic
Backflow preventer
1
Coating

27. What type of sensor is directly in the process stream?
840
The same OD as the branch
Immersion sensor
3 1/2'(inch)

28. Exits from a trench 150' long and 4' deep must be located within how many feet of a worker in the trench?
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
All the way to the shoulder
handle will bend
25 feet

29. The last two digits on an E-6010 electrode specify
Depends on the desired action if the disc or plug becomes detatched from the stem. (Fail open or Fail closed)
With the weld at a 45 degree angle
The type of coating and current
an eccentric reducer flat on top

30. To order a reducing tee you should specify the size by...
Act as a safety device to shut off the motor if the operator's foot is removed from the switch.
Magnesium
Large end to smaller end to center(bull)
Cavitation

31. To raise the boom of a crane you would...
Ground Fault Circuit Interrupter
Blue... think b-LLLLue
Flash Tank
Point thumb up

32. OD for 5'(inch)

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33. What is the welding position 3 - on the electrode mean?
62.4lbs
Flat position only
The science of heat transfer using water.
212 degrees F

34. Which component in a closed control loop is the primary element?
Sensor
Large end to smaller end to center(bull)
.433psi
Body belts

35. What are 3 fuel gases used for heating pipe or tubing?
10 feet
MAPP - acetylene - and propane
true isometric
15 PSI

36. How many 2'(inch) pipes can be supplied from a 6'(inch) header?
Protection for loss of water in the boiler.
15 PSI
Raise the load
9

37. Which of the following constants are used when working with circles and areas?
Sensor
.01745 - 3.1416 - and .7854
4 1/2'(inch)
Ground Fault Circuit Interrupter

38. Which one of the following measures and takes action?
Body belts
Controller
Ammonia
In the hot water heating pumps discharge piping.

39. What is the welding position 1 - on the electrode mean?
Yellow.. think Dee Double U is yelloWWW
The flux is in the filler material
75 degrees - also 4 to 1
All position

40. Calculate head pressure in a section of vertical pipe?
The flux is in the filler material
When a large volume of condensate is generated
Height * .433 = psig
Valve

41. What is the weakest part of a chain hoist?
Basket
lower hook
Type K
Choked position

42. The device that controls the pressure in a low pressure steam boiler is called a...
1
Pneumatics
Pressuretrol
9

43. If you double pipe size the carrying capacity is increased...
Immersion sensor
4 times
2 3/8'(inch)
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.

44. When leaning a ladder against an object - the ladder should be at an approximate angle of __________ degrees.
To allow for thermal movement
bowline on a bight
discharge
75 degrees - also 4 to 1

45. The smallest nominal size DWV copper tube is...

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46. Name the three methods of transferring heat.
Large volumes of condensate flash back to liquid in the tank so it removes trapped steam from the condensate.
Coating
1 foot
Conduction - convection and radiant.

47. The letters MSDS stand for...
Material Safety Data Sheet
Clean all surfaces
14.7psia - always in PSI-A
protect worker safety and health

48. A neutral reading on the PH scale is...
34 feet
Center of the pipe
7.0
Loosen the far bolts first

49. Why is it necessary to use roller hangers?
.625
Flooded
To allow for thermal movement
Fuel - Heat - Oxygen

50. What is the minimum thickness for threading PVC pipe?
Sch 40
pi * radius squared
The type of coating and current
On high side of the system and turns gas to liquid.