Plumbing Test Questions With Already Solved Correctly Answers 2025

Plumbing Test Questions With Already Solved Correctly
Answers 2025
1. Which of the following traps are permitted by C
special permission?
A. bell
B. S
C. drum
D. crown vented trap

2. A roof mounted ari conditioner unit is
con-

B densing at the rate of 5 GPM. How
much DFU?
A. 4
B. 5
C. 10
D. 12

3. According to the International Plumbing
D Code, when plastic piping
is installed in a con- cealed location and
passing through a stud joist or rafter,
the piping may not pass any closer than
inches from the edge of the
wood member.
A. 3/4
B. 1
C. 1 1/4
D. 1 1/2

4. The measured length along the centerline of C
the pip and its fittings is?
A. true length
B. measured length
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, Plumbing Test Questions With Already Solved Correctly
Answers 2025
C. developed length
D. actual length




2/
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, Plumbing Test Questions With Already Solved Correctly
Answers 2025
5. What is the approximated number of
threads D for a 2 1/2" schedule 40 pipe
which will be used in a fuel gas piping
system?
A. 9
B. 10
C. 11
D. 12

6. .43 PSI = How many Feet of Head? A
A. 1
B. 2.31
C. 4.4
D. 43

7. What is the PSI at the bottom of the drainage D
pipe if the test for a 4" drainage system is 30'
of head? PSI = feet of head x .433
A. 15 psi 30 (feet of head) x .433 = 12.99
B. 14 psi
C. 13 psi
D. 12 psi

8. When gas piping is installed through B
wood studs and is less than 1 1/4" from
the nearest end of the stud, the point of
passage shall be protected with a face
plate not less than .
A. 1/32
B. 1/16
C. 3/32
D. 1/8
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, Plumbing Test Questions With Already Solved Correctly
Answers 2025
9. A




4/
44