Education Exams (Educ Tle) - Free Online Reviewers

#0. A person who installs pipes, fixtures and other apparatus to convey and supply water in buildings and to dispose and discharge waste water.

A Mechanic

B Plumber

C Mason

D Carpenter

Answer: Plumber

#1. It is a receptacle or vault used to collect organic waste discharged from the house sewer.

A Manhole

B Septic tank

C Water tank

D Water Closet

Answer: Septic tank

#2. The semi-liquid substance accumulated at the bottom of the septic tank.

A Sludge

B Sediment

C Silt

D Scum

Answer: Sludge

#3. An underground tunnel that carries off the drainage and waste matter from a home or town is called:

A Sewer

B Sewerage

C Fixture

D Drainage system

Answer: Sewer

#4. The pipe that conveys waste from various fixture other than from the water closet.

A Soil pipe

B Vent pipe

C Waste pipe

D Drain pipe

Answer: Waste pipe

#5. It is a fitting or device that provides liquid seal to prevent the back passage of air.

A Loop

B Sewer

C Fixture

D Trap

Answer: Trap

#6. The tools used to tighten or loosen hexagonal fittings like unions and other metal fittings.

A Wrenches

B Threader

C Pliers

D Pipe vise

Answer: Wrenches

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

A Coupling

B Wye fitting

C Reducer

D Union fitting

Answer: Union fitting

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

A Ball valve

B Float valve

C Gate valve

D Check valve

Answer: Ball valve

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

A Gate valve

B Check valve

C Blackwater valve

D Ball valve

Answer: Check valve

#10. A schedule 40 pipe is:

A None among the choices

B Thinner than schedule 10

C Thicker than schedule 80

D Thicker than schedule 20

Answer: Thicker than schedule 20

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

A Masking tape

B Scotch tape

C Teflon tape

D Adhesive gum

Answer: Teflon tape

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

A Drain pipe

B Vent pipe

C Soil pipe

D Cleanout

Answer: Vent pipe

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

A Drainage pipe should be provided with adequate cleanout.

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

C No vent pipe is needed.

D Drainage pipe should be inclined properly for a downward gravity

Answer: No vent pipe is needed.

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

A 0% slope or level position

B 4% slope

C 3% slope

D 2% slope

Answer: 2% slope

#15. For purposes of troubleshooting in case of stoppage of flow, what must be installed in the pipe system?

A Vent pipe

B Tee fitting

C Drain

D Cleanout

Answer: Cleanout

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

A Cross-linked polyethylene (PEX)

B Chlorinated PVC (CPVC)

C Polyvinyl chloride (PVC)

D Polyethylene

Answer: Polyvinyl chloride (PVC)

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

A 80 mm

B 3 inches or 75 mm

C less than 75 mm

D 70 mm

Answer: 3 inches or 75 mm

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

A Elbow

B Union