Exam (elaborations)
OCR 2023 Design and Technology H404/01: Principles of Design Engineering A Level Question Paper & Mark Scheme (Merged)
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This shows a USB-powered personal mini fan. fan blade flexible stem (a) The flexible stem of the personal mini fan is covered with PVC. PVC is a thermo softening polymer. Identify two reasons why a thermo softening polymer is a suitable material for the flexible stem. 1 ......................
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