Practice test

North Carolina Plumbing Practice Test

Free North Carolina plumbing practice test with 20 questions on water supply, DWV systems, plumbing code principles, and NC plumbing contractor licensing.

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These questions are for study practice only and are not official exam questions.

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Question 1

1

What is the general purpose of an air gap on a dishwasher or similar fixture connection?

Question 2

2

A cross-connection in a plumbing system generally refers to:

Question 3

3

What is the primary purpose of a water hammer arrestor in a supply system?

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