Plumbing QBank 5

1. Which material ultimately seals a caulked or bell and spigot joint?

• Cement

• Oakum

• Pig lead

• Coal tar

2. What do you call the process in which all types of iron-based metals rust?

• Oxidation

• Pit corrosion

• Material breakdown

• Tuberculation

3. Which pipe support is recommended in holding a single horizontal soil or waste

branch?

• Clevis

• Bracket

• Trapeze

• Clamp hanger

4. Which of these pipes is measured by its outside diameter?

• Galvanized steel pipe

• Cast iron pipe

• Copper pipe

• Concrete pipe

5. Pressure loss in pipe due to its interior surface is attributed to what factor?

• Friction loss

• Static pressure

• Dynamic head

• Water flow

6. Which plastic pipe is normally oval in cross section and is denoted by it outside

diameter?

• PP (Polypropylene)

• CPVC (Chlorinated polyvinyl

  chloride)

• PB (Polybutylene)

• SR (Styrene rubber)

7. Ventilating system is essential in sanitary drainage system. Providing such system prevents      .

• Backpressure

• Siphonage

• Backflow

• All of these

8. The following are types of joints used in plastic pipes. Which of these is NOT

applicable?

• Crimped joint

• Solvent cement weld joint

• Heat fusion joint

• Hot poured joint

9. What is the rod used for caulking oakum?

• Soldering rod

• Glass rod

• Yarning iron

• Stadia rod

10.   What is the science that studies water in motion?

• Fluid mechanics

• Hydrokinetic

• Hydraulics

• Hydrology