IGCSE Design & Technology (0979) — May–June 2023, Paper 42

Circle two fossil fuels from the list below. coal hydrogen natural gas nuclear solar wind

Products are designed with a limited lifetime. Give two reasons why products may be designed with a limited lifetime.

Fig. 3.1 shows three types of structure. Match the correct structure type to each example shown. The structure types are: frame structure, mass structure, shell structure. - Photo…

Fig. 4.1 shows forces acting on a beam. Label A shows arrows acting at both ends of the beam in opposite twisting directions. Label B shows arrows pulling the beam along its axis…

Fig. 5.1 shows a mechanism with a crank, link C and link D. State the type of motion of link C.

Fig. 6.1 shows two spur gears meshed together. Both gears have 24 teeth. State the velocity ratio and the direction of rotation of the output gear relative to the input gear.

Fig. 7.1 shows three electronic circuit symbols. Name each symbol. Symbol 1: a single long and short line (cell symbol) Symbol 2: a triangle with a vertical bar and a line (diode…

Fig. 8.1 shows a toggle switch. Describe the function of the toggle switch.

The list below shows abbreviations for multiple and sub-multiple units of capacitance: F pF µF nF Arrange the units in Table 9.1 in order of size, from smallest to largest.…

State two design features that ensure the trestle (Fig. 10.1) is safe and secure.

Fig. 11.1 shows a part of a bicycle chain with four positions identified: A and D on the outer plates/rivet heads, and B and C at the pin/roller bearing points between links. Give…

Fig. 12.1 shows a rechargeable cycle light which uses three high-intensity LEDs. Give two benefits of using LEDs for the cycle light.