Microteach plumbing

What is the object shown in the image?

• Electrical switch

• Washing machine service valve

• Light bulb

• Door handle

Answer explanation

The object in the image is a washing machine service valve, which is used to control water flow to the washing machine. It differs from an electrical switch, light bulb, or door handle, making it the correct choice.

What do the blue and red handles on the valve typically indicate?

• A) Hot and cold water

• B) On and off positions

• C) Gas and air flow

• D) Open and closed valve

Answer explanation

The blue handle typically indicates cold water, while the red handle indicates hot water. This color coding helps users easily identify the temperature of the water being controlled by the valve.

What type of fitting is this?

• Isolation valve

• Straight connector

• Plastic elbow

• Outside tap

Answer explanation

An isolation valve is used to stop the flow of water in a plumbing system, making it distinct from other fittings like connectors or elbows. This fitting allows for maintenance without shutting down the entire system.

What is this tool called?

• Stillsons

• Wrench

• Adjustable spanner

• Hammer

Answer explanation

The tool in question is called an adjustable spanner, which is designed to grip various sizes of nuts and bolts due to its movable jaw. Stillsons are a type of pipe wrench, while a hammer is a different tool altogether.

What are these called?

• Wire cutters

• Adjustable wrenches

• Needle-nose pliers

• Water pump pliers

Answer explanation

The correct answer is 'Water pump pliers' because they are specifically designed for gripping and turning objects, especially in plumbing applications. The other options serve different functions.

What is this?

• Compression elbow

• Plastic elbow

• Plastic connector

• Plastic bend

Answer explanation

The correct answer is 'Plastic elbow' because it specifically refers to a type of fitting used in plumbing that allows for a change in direction of pipes, typically made of plastic.

What sizes of pipe are commonly found in our homes?

• 10mm, 18mm, 25mm

• 15mm, 20mm, 25mm

• 10mm, 12mm, 18mm

• 10mm, 15mm, 22mm

Answer explanation

In homes, common pipe sizes include 10mm, 15mm, and 22mm, which are used for various plumbing applications. The other options do not reflect typical household pipe sizes.