Reka Bentuk Teknologi Tahun 6

What is the main function of gears in a mechanical system?

• Generate electrical energy

• Transfer force and motion

• Store energy

• Reduce noise

Which component connects two pulleys?

• Gear

• Belt

• Hinge

• Resistor

What is an example of a first-class lever?

• Wheelbarrow

• Scissors

• Bottle opener

• Wheel

The control panel of a washing machine functions to:

• Rotate the drum

• Give instructions to the motor and sensors

• Generate heat

• Store water

Common materials for building mechanical models in school are:

• Paper and plastic

• Glass

• Cast iron

• Teak wood

If a large gear turns 5 times, how many times will a small gear turn?

• Less

• More

• Same

• Stop

Why do bicycles use chains and gears?

• To reduce friction

• Transfer force from pedals to wheels

• Decorate the bicycle

• Store energy

The balance sensor of a washing machine functions to:

• Stop the drum if unbalanced

• Increase rotation speed

• Heat water

• Generate noise

What is the advantage of a pulley system compared to gears?

• Suitable for long distances

• More precise

• No friction

• Cheaper

Electronic components in a washing machine include:

• Motor

• Sensors and control panel

• Belt

• Axle