NV C-1 Plumbing and Heating Practice Questions - Nevada C-1 Plumbing and Heating Contractor Examination Exam - NV C-1 Plumbing and Heating Practice Questions - Nevada C-1 Plumbing and Heating Contractor Examination Exam

Question 1

A steam heating boiler is being placed in service. Which safety control is required to shut off the fuel if the water level in the boiler drops below a safe point?

A high-limit aquastat only A listed low-water fuel cutoff A circulating-pump flow switch only A flue-gas carbon-monoxide sensor

Correct Answer:

A listed low-water fuel cutoff

Question 2

The pressure relief valve on a hot-water heating boiler must be which of the following?

A hose-bibb vacuum breaker piped to a floor sink An ASME-rated relief valve set at or below the boiler’s maximum allowable working pressure A temperature-only relief valve set at 140°F A check valve in the boiler feed line

Correct Answer:

An ASME-rated relief valve set at or below the boiler’s maximum allowable working pressure

Question 3

On a steam heating boiler, a Hartford loop is installed in the return piping primarily to do which of the following?

Increase the boiler’s steaming rate by raising the water line Prevent the boiler water from being siphoned out through the return if a return line fails Replace the need for a low-water fuel cutoff Convert the steam boiler to a closed hot-water heating system

Correct Answer:

Prevent the boiler water from being siphoned out through the return if a return line fails

Question 4

Per UPC 2018 Section 1211.8 and NFPA 54 (2012), where a sediment trap is required at a gas appliance, it shall be installed in which location?

Upstream of the appliance shutoff valve, as far from the appliance as possible Downstream of the appliance shutoff valve and as close to the appliance inlet as practical In the meter manifold only, with no trap at the appliance In the vent connector above the draft hood

Correct Answer:

Downstream of the appliance shutoff valve and as close to the appliance inlet as practical

Question 5

Per UPC 2018 Section 1211.5 and NFPA 54 (2012), an appliance manual gas shutoff valve shall be located not more than how far from the appliance it serves?

3 feet 6 feet 10 feet 25 feet

Correct Answer:

6 feet

Exam overview

About this Exam

Prepare with the NV C-1 Plumbing and Heating Practice Questions - Nevada C-1 Plumbing and Heating Contractor Examination Exam practice quiz. This question bank includes 100 questions covering section, water, piping, table, and pipe. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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NV C-1 Plumbing and Heating Practice Questions - Nevada C-1 Plumbing and Heating Contractor Examination Exam

This practice set contains 100 questions from the matching question bank and focuses on section, water, piping, table, and pipe. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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NV C-1 Plumbing and Heating Practice Questions - Nevada C-1 Plumbing and Heating Contractor Examination Exam

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