AQA DT

A designer has created a security system for use in a home. The system is intended to alert the homeowner to an intruder. What is the input in this system?

• Alarm sound

• Automatic message sent to mobile phone

• Flashing light

• Motion sensor

When a person sits on this stool, what is the main force on the stool leg?

• Compression

• Shear

• Tension

• Torsion

Which of the following metals should not be used outdoors without a protective coating of a different material?

• Aluminium alloy

• Copper

• Low carbon steel

• Zinc

Which one of the following is a production method based on providing stock as it is needed?

• Computer Aided Manufacture

• Flexible Manufacturing

• Integrated Manufacture

• Just in Time Manufacturing

Which one of the following statements is true?

• Balsa is a natural material used in model making

• Medium Density Fibreboard is a man-made material commonly used for outdoor furniture

• Silk is a man-made material used in the textiles industry

• Urea formaldehyde is a natural material used to manufacture electrical sockets

What is the definition of a smart material?

• A material that can hold data

• A material that can withstand excessive force

• A material that reacts to changes in the environment

• A material that shrinks when heated

Designers often create products that they know will have a limited life span. What is this called?

• Design for disassembly

• Design for maintenance

• Planning for manufacture

• Planned obsolescence

Which of the following is a thermosetting polymer?

• Acrylic (PMMA)

• High Density Polythene (HDPE)

• Polyester resin (PR)

• Polypropylene (PP)

The diagram below shows the movement of a lever which is part of a toy. The distance from point A to the pivot is 10mm. The distance from point B to the pivot is 40mm. If point A moves 10mm to the right, how far would point B move to the left?

• 10mm

• 20mm

• 40mm

• 50mm

Which one of the following is a softwood?

• Beech

• Mahogany

• Oak

• Spruce