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NHIE Plumbing Practice Test Best Rated Paper 2022.
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Please refer to the figure to answer this question. In the figure, the plumbing vent termination is A. installed with all proper clearances B. too close to the openable window C. too close to the property line D. too close to the wall - CORRECT ANSWER IS B. too close to the openable window. A common term for the supply pipes going from the basement ceiling to the upstairs bathroom is: A. Verticals B. Stacks C. Risers D. Leaders - CORRECT ANSWER IS C. risers Direct connections between potable water piping and sewer-connected wastes shall: A. be protected by a check valve B. not exist under any condition C. be provided with anti-siphon valves D. be protected by trap primers - CORRECT ANSWER IS B. Not exist under any condition. If a well pump cycles on and off rapidly, it is an indication that A. someone is turning a faucet on and off B. the pressure switch is out of adjustment C. there is a leak in the well supply pipe D. the pressure tank is probably water logged - CORRECT ANSWER IS D. the pressure tank is probably water logged. The modern MINIMUM size water service pipe to a residence is A. 1/2 inch B. 3/4 inch C. 1 inch D. 1 1/4 inch - CORRECT ANSWER IS B. 3/4 inch.
Polybutylene (PB) water supply tubing is seen in the house. You should report that it: A. may require expensive replacement B. is illegal to use this kind of pipe C. should only have been used for a waste pipe D. is not a problem. PVC pipe is a problem - CORRECT ANSWER IS A. May require expensive replacement. A toilet in a residential bathroom A. is secured to the plumbing "closet flange" by two closet bolts B. is not allowed to have a double wax ring C. cannot be tightly sealed to a smooth floor such as sheet vinyl D. requires a minimum four-inch drainpipe - CORRECT ANSWER IS A. is secured to the plumbing "closet flange" by two closet bolts. A common place for steel enamel sinks to "rust out" and leak is the: A. overflow channel B. sink rim C. bowl clamps D. drain control - CORRECT ANSWER IS A. overflow channel The water heater pressure relief valve discharge pipe MUST be: A. A 3/4 inch pipe B. made of rigid pipe C. threaded at the bottom D. As large as the relief valve outlet - CORRECT ANSWER IS D. As large as the relief valve outlet. A sacrificial anode (also called an anti-corrosion rod) is found in A. pressure tanks B. water heaters C. galvanized supply systems D. sump pumps - CORRECT ANSWER IS B. water heaters Water heaters are NOT allowed in A. basements accessible only from interior stairs B. attics accessible only from a permanent ladder C. closets of bedrooms or bathrooms D. laundry rooms open to the living area - CORRECT ANSWER IS C. closets of bedrooms or bathrooms.
A drain waste vent installed on an individual fixture where there is no access to a conventional venting system is known as a(n): A. outside vent B. mechanical vent C. roof vent D. inside vent - CORRECT ANSWER IS B. mechanical vent A sewage ejection pump in a vacant single-family home continues to operate intermittently for a few minutes after all the fixtures have been operated. This is MOST probably due to A. a linking outside hose connection B. a leaking check valve C. a stuck float switch D. siphoning at a trap - CORRECT ANSWER IS B. a leaking check valve. Sewage ejector pumps are necessary when a toilet: A. is far from the main sewer stage B. is below the septic drainage field C. backs up frequently D. is below the sewer line - CORRECT ANSWER IS D. Is below the sewer line. Flexible gas connectors for gas dryers may NOT be: A. six feet (6') in length B. coupled together C. over three feet (3') in length D. Made of stainless steel - CORRECT ANSWER IS B. Coupled together. The purpose of a thermocouple is to A. control temperature B. adjust flame C. shut gas off D. control fan - CORRECT ANSWER IS C. shut gas off. A flame or sparking device within gas appliances MUST be elevated off the garage floor AT LEAST A. 6 inches B. 12 inches C. 18 inches D. 24 inches - CORRECT ANSWER IS C. 18 inches.
Leaks in gas piping can be detected by: A. condensation B. corrosion C. discoloration D. soapy water - CORRECT ANSWER IS D. soapy water. Which of the following should NEVER be installed in a concrete slab-on-grade floor? A. heat ducting B. gas piping C. electrical conduit D. waste pipe - CORRECT ANSWER IS B. Gas piping.