What is product design? What are the roles of a product designer?
[3 marks]What are the primary concepts involved in design?
[4 marks]Explain the essential factors of product design.
[7 marks]What is tolerance? Explain.
[3 marks]Explain briefly external and internal threads.
[4 marks]Explain the factors to be considered while designing the product.
[7 marks]Explain about gate size & location.
What are the limitations of plastic materials?
[3 marks]Compare different plastic materials.
[4 marks]Explain the basis of material selection.
[7 marks]What is an undercut? Explain.
[3 marks]What are the reasons for failure of a plastic product?
[4 marks]Explain long term and short term properties of plastics.
[7 marks]What are the limitations of two plate moulds?
[3 marks]What is compression moulding? Explain briefly.
[4 marks]Compare different plastic processing methods with respect to product size.
[7 marks]What are the disadvantages of injection moulding?
[3 marks]What is rotational moulding? Explain briefly.
[4 marks]Explain the product design features related to injection moulding.
[7 marks]Define: i) Insert; ii) Hinges; iii) Molded holes;
[3 marks]What are the properties required for Injection molded thermoplastic gears.
[4 marks]Explain the procedure for designing pipes. Page 1 of
[2 marks]Define: i) Weld line; ii) Warpage; iii) Flash;
[3 marks]Explain briefly lettering and embossing.
[4 marks]Explain the procedure for designing gears. Page 2 of
[2 marks]