Plumbing Science Quiz 2

What type of saw would you use to make a hole in a plasterboard wall for a 15 mm pipe?

• Tenon saw
• Floorboard saw
• Padsaw
• Mitre saw

Heat that travels in straight lines between its source and the body to be heated is said to be:

• conduction.
• convection.
• radiation.
• heat transfer.

A siphon permits water to be moved:

• on the same level.
• from a higher level to a lower one.
• from a lower level to a higher one.
• above the height of capillary attraction.

Tensile strength relates to a material being:

• stretched.
• compressed.
• twisted.
• sheared.

The safest electrical power tool is:

• 440 V.
• 240 V.
• 110 V.
• battery operated.

A miniature circuit breaker (mcb) for a ring main circuit would most likely be rated at:

• 45 amp.
• 32 amp.
• 16 amp.
• 6 amp.

The scale which forms inside pipes in certain water areas is described as:

• temporary hardness.
• permanent hardness.
• solvency.
• neutral.

A socket connected to a ring main with a single cable is a:

• radial circuit.
• two-way circuit.
• spur.
• main bonding cable.

A device used to protect a system while removing a section of pipe is called

• temporary continuity bond.
• main bond.
• supplementary bond.
• multimeter.

A cylinder has a radius of 30 cm and a length of 120 cm. What is its approximate volume in litres?

• 340 litres
• 300 litres
• 240 litres
• 180 litres