[A] What; [B] Why; [C] How Statement The toy should develop and satisfy child curiosity and meet parents' requirements.

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[A] What; Why; [C] How Statement The toy should develop and satisfy child curiosity and meet parents' requirements. It is required to design a toy with a high educational value to be used as a learning tool for children. The toy should encourage the child to learn and develop new skills for instance; hand/eye coordination, learning letters and words. D. Information required for the design phase [2 marks] 1. Information needed for the design phase will include all of the followings except A. Fit child age of 3 to 6 years B. Educational capability C. Competitors' toys D. React to child speech 2. Information about the materials to be used in design will include the following except A. Light Weight B. High strength C. Recycled plastic D. Thermal conductivity 3. The excitement of the children on trying to have fun with the toy determines whether some of the needs are satisfied or not. A. True B. False C. Not sure 4. Once the design is accomplished, a prototype must be made to advertise the product. A. True B. False C. Not sure Question-4 (25 marks: 25%): (CLO5:100%) Concepts generation, evaluation & selection Vaccines are highly sensitive to temperature; thus, they must be stored at very low temperatures before being injected into their recipients. Remote areas not connected to the electrical power-grid are highly disadvantaged, especially with the present need to vaccinate people and keep the Covid- ABC

19 virus under check. The Kingdom of Saudi Arabia (KSA) has also undertaken to reduce the emissions of gases such as CO₂ and HCFC (refrigerants) which are very harmful to the environment and the ozone layer. Therefore, it is proposed to design a solar refrigerator to store vaccines particularly in remote areas of KSA without electricity and any other fossil energy. The proposed design has the following constraints: cost less than SAR 39,000; volume of refrigerator should be greater than 200 liters; the refrigerant should be environmentally friendly with zero gas emission. Available options to satisfy identified functions and features are: (See page 11 for some pictures) Option ID and Cost Description A1/500SAR R22 Old refrigerants harmful to the environment, usage is being stopped. 140 liters. A2/600SAR A3/700SAR Remote temperature control system: expensive method suitable for absorption refrigeration system. A4/700SAR Polyurethane foam is an excellent form of insulation used mainly in compression and adsorption in refrigeration. A5/60000SAR Solar PV Compression Refrigeration system: difficult system to be used in remote areas. Not suitable for volume of refrigeration above 150 liters. A6/200SAR Manual temperature control. A7/400SAR Steel: Not suitable for refrigeration system as it is heavy. A8/600SAR R134A: Actual refrigerant used in air conditioning and refrigeration system, has a mild effect on environment. A9/700SAR Copper: Not widely used in refrigeration system. A10/30000SAR Solar thermal absorption refrigeration system: excellent system which enables a high performance of solar energy and can be controlled automatically. A11/600SAR Fiber glass: It is a cheap and non-flammable insulation material but dangerous to handle. A12/28000SAR Thermal solar adsorption refrigeration system: may be used in refrigeration system with low performance and use only alloys materials, specific insulating material, and R134A. Temperature control can only be manual. A13/1000SAR 120 liters. A14/900SAR A15/800SAR Touch screen temperature control: can control sensitive temperature Cellulose insulation is the eco-friendliest forms of insulation. A16/1000SR A17/1100SAR R600A: Refrigerants composed of carbon and hydrogen, which do not represent an environmental risk, has zero harmful gas emission. Alloys expensive metals used in specific refrigeration systems. Polystyrene: An insulating material, mainly used for buildings Aluminum: Excellent material used in refrigeration system. 250 liters. A18/400SAR A19/800SAR A20/1200SAR A21/800SR R717: Ammonia used in industrial refrigeration due to its harmful properties A22/500SR Mineral wool insulating material used only in industry. a) Carry out a morphological analysis by completing the Table below using only the options provided. Write the option ID (Axx) in the space provided. (10 marks) Functions Option I Option 2 Option 3 Option 4 8|Page

Metal used in Refrigerators Refrigerant Capacity of refrigerator Insulator material Solar refrigeration systems Temperature control b) Combine these options to generate three design concepts:1, 2 and 3, and calculate the cost. (9marks) The following requirements should be considered in your design: . All constraints must be respected. • The three proposed designs must consider two solar refrigeration systems. Feature Design 1/Cost Design 2/Cost Design 3/Cost A17/1500SAR A17/1500 SAR Metal used in Refrigerators (the cost shown in the previous Table is 1100) the cost shown in the previous Table is 1100) A19/1200 SAR (the cost shown in the previous Table is 800) Refrigerant Capacity of refrigerator Insulation material Solar refrigeration systems Temperature control Total Cost (SAR) c) Evaluate the THREE design concepts defined in part (b) using the weights shown in the table and the exact rates shown above the table. Determine the best design considering the following design criteria: (6 marks) • Highly environmentally friendly • High performance Low cost 91 Page

• High safety Criteria High safety Score Concept Weights W 20 100 R Design 1 W*R R Design 2 W*R R Design 3 W R (d) Select the best design: Design 2 3 Note: The best design should include the following: A10, A14, A20, A15, A16, A17, or A19 PICTURES RELATED TO SOME OPTIONS Remote temperature control Manual Temperature control 8.9 Touch screen temperature control Solar Refrigerator Refrigerants Question-5 (10 marks: 10%): (CLO7:100%) Detailed solution generation The figures below show two different electric scooter designs used for transportation of students on campus. You are required to draw sketches for two different creative ideas of an electric scooter that can provide the same functions and efficiency as the design shown in the figures. 10 Page Rate 5 for best, 3 for medium and I for low High performance Low cost 30 10 Environmentally Friendly 40

Note: The grade will only be given based on the creativity and the differences between the ideas LL Alternative I Alternative 2 Alternative 1 Solution Alternative 2 11 | Page