Plumbing Theory Practice Test

Our Plumbing Theory Practice test will help you improve your performance on test day.

We present to you 7 questions created and managed by professionals that will help you climb the professional ladder of the plumbing trade which currently is considered as one of the best growing jobs.

Each question contains an explanation that will support your process of learning and revision.

Plumbing Theory Practice Test

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Your answers are highlighted below.
Question 1
Please mark the one which is incompressible:
A
Air
B
Water
C
Both
Question 1 Explanation: 
Water is compressible.
Question 2
Does pressure in a fluid act equally in all directions?
A
Yes
B
No
Question 2 Explanation: 
Pressure in a fluid acts equally in all directions.
Question 3
What is a horizontal pipe by definition?
A
Any pipe or fitting that makes an angle less than 30 degrees with its horizontal
B
Any pipe or fitting that makes an angle less than 45 degrees with its horizontal
C
Any pipe or fitting that makes an angle less than 15 degrees with its horizontal
D
Any pipe or fitting that makes an angle less than 25 degrees with its horizontal
Question 4
Please mark the one that has the unit of pressure:
A
Grams per square centimeter
B
Pounds per square inch
C
Both of the above
Question 4 Explanation: 
The one that has the unit of pressure are pounds per square inch.
Question 5
How much pressure per psia is a complete or total vacuum?
A
1 psia
B
-14.7 psia
C
14.7 psia
D
0 psia
Question 5 Explanation: 
0 psia is a complete or total vacuum.
Question 6
How long is the maximum length allowed for a vertical combination of waste and vent pipe?
A
12 feet
B
10 feet
C
8 feet
D
15 feet
Question 7
How big in developed length should fixtures other than water closets be, measured horizontally from the stack?
A
6 feet
B
12 feet
C
4 feet
D
8 feet
Question 7 Explanation: 
Fixtures other than water closets be, measured horizontally from the stack should be no bigger than 4 feet.
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There are 7 questions to complete.

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