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. Since _______________ is virtually incompressible - pressure has little effect on its volume.
1728
Water
Ground Fault Circuit Interrupter
With the weld at a 45 degree angle

2. OD for 4'(inch)

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3. The color code for type K copper is...
Capillary action
Ammonia
Green... think KKelly GREEN
Yellow.. think Dee Double U is yelloWWW

4. Factors in considering the site selection for a new cooling tower.
Prevailing wind speed and direction - environmental concerns - zoning requirements
Remote bulb
1.25'(inch)
return fitting

5. What is the formula to figure take off on a 45 degree elbow?

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6. An increase in pressure will cause the boiling point of water to ________...
Increase
Positive
Softens it
Center of the pipe

7. When a loop is needed at any point between ends of a rope - the proper knot to tie is the...
25 feet
bowline on a bight
Type K
250 degrees

8. The 6G welding position is...
25 feet
The science of heat transfer using water.
3 1/2'(inch)
With the weld at a 45 degree angle

9. What type of Copper tubing is not identified by color on the tubing itself?
The temperature that the joints are made - the flux and temperatures of the system
soft tempered
62.4lbs
Multiply the length of the hypotenuse of the roll and the set by 1.414

10. The centerline of piping in a horizontal plane on an isometric drawing is most generally drawn at __________ degrees from the horizontal.
Beam clamp
piping
30 Degrees
Crimson... think aCRimson

11. In one cubic foot there are _________ cubic inches.
hydrometer
(Total Height - Elevation) * .433 = psig
To reduce the pressure from the cylinders to safe and workable pressures
1728

12. Steam in contact with the water it has been generated from is known as ________________ steam.
piping
Saturated
Expansion loop.
The flux burns and the joint becomes ineffective

13. To figure the end-to-end measurement of a piece of pipe when the end-to-end center measurement is known the...
take-off must be subtracted from the end-to-center measurement.
4 1/2'(inch)
Manometer
Insufficient condensate drainage

14. When leaning a ladder against an object - the ladder should be at an approximate angle of __________ degrees.
Saturated
14.7psia - always in PSI-A
75 degrees - also 4 to 1
On high side of the system and turns gas to liquid.

15. What is the expansion and compression of water vapor in a pump?
Continuously
Cavitation
1728
true isometric

16. Why is it necessary to use flux on a soldered joint?
10 feet
Coating
Flat and horizontal positions
To chemically prepare the pieces for soldering

17. A vertical line in an isometric drawing represents...
Up and Down
2 3/8'(inch)
The system temperature - thermal and dynamic movement of the pipe and vibration.
2 and 1

18. Standard atmospheric pressure at sea level is _____...
14.7 psia
.135 cu ft
Positive
After cutting

19. What type of sensor is directly in the process stream?
foot valve
13/16'(inch)
Flash Tank
Immersion sensor

20. A sling is weakest in which position?
Choked position
no valves permitted
25 feet
Pipe strain

21. When arranging weld coupons for testing position 6G...
Axis of pipe should be on a 45 degree
.7854 x D squared
4 times
Its cheaper!

22. To stop all crane movement the ______ signal should be used.
The temperature that the joints are made - the flux and temperatures of the system
Flashing
Mechanical/Thermostatic
Dog Everything

23. What type of hanger uses a spring that splits the rod?
BUT
Spiral
Spring hanger
Softener

24. What type of valve should be used to bypass a control valve?
Argon
true isometric
Globe valve
BUT

25. A schematic drawing is...
180
Not to scale - does not show locations of equipment. It shows pipe size and flow.
In the direction of flow
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

26. The final step in the galvanizing of pipe is to dip the pipe into a bath of molten _________?
Flashing
zinc
Guide - Anchor - Guide
Steam

27. A guard rail system must withstand a minimum force of __________ pounds.
14.7psia - always in PSI-A
Clean all surfaces
Coating
200 lbs

28. Which of the following methods of access to a scaffold is prohibited?
Schedule 10
Guide - Anchor - Guide
Globe valve
Climbing the cross braces.

29. Which of the following is an essential element necessary to produce an ordinary fire?
Globe valve
Fuel - Heat - Oxygen
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)
Remote bulb

30. What are the main differences between soldering and brazing?
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
Mechanical/Thermostatic
Fusion

31. An ejector pump is typically used to pump __________.
5ft - the 4 to 1 rule - every 4 feet high the base must move 1 foot back.
15 Feet
The flux burns and the joint becomes ineffective
sewage

32. What is on the low side of the vapor compression cycle?
OD
The Evaporator
pi * radius squared
Dog Everything

33. A mixing valve has ___ inlets and ___ outlets.
Waterlogged
212 degrees F
Expansion = Constant per 100ft multiplied by (Final Temp- Starting Temp) Example: 380' steel pipe (.0305 constant) is heated from 62 degrees to 171 degrees - how much did the pipe expand? Formula: .0305 * 3.8 (171-62) = 3 5/16'(inch)
2 and 1

34. Which one of the following measures and takes action?
Controller
Down Stream
Eccentric reducers - flat on top
Erratic readings

35. The device that controls the pressure in a low pressure steam boiler is called a...
Positive
Set up opposite bolts fairly tight - then tighten all bolts equally for inspection purposes.
Roller hangers
Pressuretrol

36. What is the formula to calculate thermal expansion?

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37. Annealing copper...
1 foot
Flux
The science of heat transfer using water.
Softens it

38. The color code for type L copper is...
Blue... think b-LLLLue
Remove any paint or rust.
Erratic readings
Hydraulics

39. The sum of atmospheric and gauge pressure is known as __________ pressure.
Insufficient condensate drainage
Clean all surfaces
Absolute
Point thumb up

40. The maximum practical suction lift on positive displacement pumps is 22 feet and on centrifugal pumps it is __________ feet.
15 Feet
In the direction of flow
Before the strainer and fully open.
3.1416

41. Which of the following is NOT a reason to use stud bolts instead of machine bolts for bolting flanged piping joints?
15 Feet
orthographic
Set point
The stud bolt is stronger than a machine bolt of the same size and material.

42. What should the outside attendant do to rescue a worker who shows physiological effects of exposure in a confined space?
Notify response team and allow them to rescue.
Waterlogged
supporter of combustion
Increase in friction

43. What is the purpose for a weep hole in a saddle pad?
.433psi
8 5/8'(inch)
Allow moisture to escape
Down Stream

44. All of the following are process control elements EXCEPT...
The Evaporator
30 Degrees
handle will bend
piping

45. What are 3 fuel gases used for heating pipe or tubing?
Mechanical/Thermostatic
Sch 80 Steel pipe
Remove any paint or rust.
MAPP - acetylene - and propane

46. How many 2'(inch) pipes can be supplied from a 6'(inch) header?
To chemically prepare the pieces for soldering
5 9/16'(inch)
9
return fitting

47. If the travel of a 45 degree offset is known - what formula can be used to find the advance?
.707 x Travel
In the direction of flow
an eccentric reducer flat on top
.625

48. What is typically a final control element?
Valve
Hydrostatic
The temperature that the joints are made - the flux and temperatures of the system
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)

49. Horizontal steam supply piping should be reduced in size by using...
Groove
Ball joint - Bellows Joint and Packed Joint
Eccentric reducer (flat on top)
62.4

50. What is the formula to figure the area of a circle?
Hydrostatic
Act as a safety device to shut off the motor if the operator's foot is removed from the switch.
radius squared times PI
Neutral