Eduqas GCSE Design and Technology: technical systems and mechanisms - a complete overview

What this topic actually demands

Technical systems and mechanisms is the engineering knowledge behind Eduqas Component 1: energy, electronics and mechanisms. It is the most quantitative part of the course, carrying the gear-ratio and velocity-ratio calculations, and it asks you to reason about how products work rather than just recall facts. The marks come from identifying the right force, motion or component, calculating accurately, and weighing energy sources in a balanced way.

This guide walks through the subtopics in specification order, then sets out the Eduqas exam patterns. Each subtopic has a matching dot-point page with worked exam questions; this overview ties them together.

Energy generation and storage

Electricity comes from fossil fuels and nuclear (reliable, but fossil fuels emit carbon and are finite, nuclear leaves radioactive waste) and from renewables (wind, solar, tidal, hydroelectric, biomass), which are clean but mostly intermittent. Products store energy in cells: primary (single-use) for low-drain products, secondary (rechargeable) for frequently used or high-drain products. Disposal and recycling of batteries matter.

The systems approach to designing

Electronic products are designed as input, process and output blocks, drawn as a block diagram and broken into sub-systems. A microcontroller is a programmable chip that replaces many fixed components and can be reprogrammed. Feedback uses the output to adjust the input or process, giving automatic control like a thermostat.

Input, process and output components

Inputs sense (switches, LDR for light, thermistor for temperature). Process decides (transistor as a switch, integrated circuits, microcontroller). Outputs act (LED with a series resistor, buzzer, motor). Choosing the right component for each block builds the product's behaviour.

Forces, stresses and motion

The five forces are tension, compression, bending, torsion and shear. The four types of motion are linear, rotary, reciprocating and oscillating. A lever turns about a pivot and can give a mechanical advantage; levers come in three classes by the order of pivot, load and effort. Linkages change the direction or type of motion.

Gears, pulleys and cams

Gears mesh to transmit rotary motion; the gear ratio is driven teeth over driver teeth, and a ratio above 1 slows the output and increases torque. Pulleys and belts do the same between distant shafts, compared by velocity ratio (driven diameter over driver diameter). Cams and followers convert rotary motion into reciprocating or oscillating motion, with the cam's shape setting the timing.

The exam patterns Eduqas repeats

Component 1 tests this topic with short recall (name a force, a type of motion, a sensor), gear-ratio and velocity-ratio calculations, Explain questions (how a lever gives mechanical advantage, how a cam works, the advantage of a microcontroller), and compare or evaluate questions (energy sources, cell choice). Identify the force, motion or component precisely, show working and units in calculations, and reach a balanced judgement on energy.

For the official specification

WJEC Eduqas publishes the full specification (C600), past papers and mark schemes at eduqas.co.uk. Always revise from the current specification and Eduqas's own materials, because question style and command words are board-specific.