Education Exams (Educ Tle) - Free Online Reviewers

#300. The kind of fitting used to connect fixed pipe and fixtures is a ________.

A Wye fitting

B Coupling

C Union fitting

D Reducer

Answer: Union fitting

#301. A fitting or device installed at the inlet of a water pump to prevent backflow of water.

A Ball valve

B Check valve

C Blackwater valve

D Gate valve

Answer: Check valve

#302. It is a device installed in water lines that can be closed or opened to allow installation or troubleshooting of fixtures.

A Check valve

B Gate valve

C Float valve

D Ball valve

Answer: Ball valve

#303. A schedule 40 pipe is:

A Thicker than schedule 20

B Thicker than schedule 80

C Thinner than schedule 10

D None among the choices

Answer: Thicker than schedule 20

#304. What material is used to seal off threaded fittings to avoid leakage?

A Masking tape

B Teflon tape

C Scotch tape

D Adhesive gum

Answer: Teflon tape

#305. What must be installed to prevent siphonage or backflow of the water seal in the drainage system?

A Vent pipe

B Drain pipe

C Soil pipe

D Cleanout

Answer: Vent pipe

#306. Which of the following is NOT required by the National Plumbing Code?

A Drainage pipe should be inclined properly for a downward gravity flow of water.

B Drainage pipe should be provided with adequate cleanout.

C No vent pipe is needed.

D All pipe joints must be well-fitted and tightly connected.

Answer: No vent pipe is needed.

#307. What is the ideal inclination of a horizontal waste pipe as recommended by the National Plumbing Code?

A 2% slope

B 3% slope

C 4% slope

D 0% slope or level position

Answer: 2% slope

#308. For purposes of troubleshooting in case of stoppage of flow, what must be

A Vent pipe

B Cleanout

C Drain

D Tee fitting

Answer: Cleanout

#309. Plastic pipes are commonly used in water fixture installation nowadays. Which of the following is preferred?

A Polyvinyl chloride (PVC)

B Chlorinated PVC (CPVC)

C Cross-linked polyethylene (PEX)

D Polyethylene

Answer: Polyvinyl chloride (PVC)

#310. The Plumbing Code on House Drain provides that there must be no more than two closets that shall discharge into a ________ pipe diameter.

A 3 inches or 75 mm

B 80 mm

C less than 75 mm

D 70 mm

Answer: 3 inches or 75 mm

#311. A metal or plastic fitting used to connect smaller pipe from a larger pipe.

A Reducer

B Elbow

C Union

D Coupling

Answer: Reducer

#312. As a basic prerequisite for most plumbing project, what should be connected for each faucet, toilet, and fixtures?

A Fixture shutoffs

B Main shutoffs

C Intermediate shutoffs

D Valves

Answer: Fixture shutoffs

#313. A plumber wants to tighten and loosen pipes. Which tool is appropriate?

A Pipe cutter

B Flux

C Pipe wrench

D Butane torch

Answer: Pipe wrench

#314. A plumber wants to cut metal pipe. Which tool is appropriate?

A Hacksaw

B Back saw

C Handsaw

D Drywall knife

Answer: Hacksaw

#315. Metal with semi-rigid auger whose end is usually fitted with a hook or corkscrew is called ________.

A plumber?s snake

B plunger

C valve

D bushing

Answer: plumber?s snake

#316. If your toilet has trouble, you use rubber funnel-shape instrument attached to the end of the handle for unblocking. What is this tool?

A plumber?s snake

B valve

C plunger

D bushing

Answer: plunger

#317. Which plumbing tool is used for gripping large pipes and irregular objects?

A monkey wrench

B chain wrench

C yoke vise

D pipe wrench

Answer: chain wrench

#318. A plumber wants to create thread outside pipe by hand. Which tool is appropriate?