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It covers forces in bicycle gear cable manufacture and operation, benefits of nylon linings, hydraulic force in systems, lever mechanics for a wood turning lathe speed control, gear selection methods, thread pitch, logic symbols and truth tables, and capacitor ratings with related circuit delay components.",{"@graph":14,"@context":73},[15,34,56],{"@type":16,"itemListElement":17},"BreadcrumbList",[18,23,27,31],{"item":19,"name":20,"@type":21,"position":22},"https://docshare.wps.com","Home","ListItem",1,{"item":24,"name":25,"@type":21,"position":26},"https://docshare.wps.com/document/","Document",2,{"item":28,"name":29,"@type":21,"position":30},"https://docshare.wps.com/document/exam/","Exam",3,{"item":32,"name":10,"@type":21,"position":33},"https://docshare.wps.com/document/design-and-technology-paper-4-systems-and-control-question-paper-04/642358/",4,{"url":32,"name":10,"@type":35,"image":36,"author":41,"headline":10,"publisher":44,"fileFormat":47,"inLanguage":8,"description":12,"dateModified":48,"datePublished":49,"encodingFormat":47,"isAccessibleForFree":50,"interactionStatistic":51},"DigitalDocument",{"url":37,"@type":38,"width":39,"height":40},"https://docshare.wps.com/thumbnails/design-and-technology-paper-4-systems-and-control-question-paper-04/642358.png","ImageObject",300,407,{"name":42,"@type":43},"Ivy","Person",{"url":19,"name":45,"@type":46},"DocShare","Organization","application/pdf","2026-10-31","2026-10-23",true,{"@type":52,"interactionType":53,"userInteractionCount":55},"InteractionCounter",{"@type":54},"ViewAction",5,{"@type":57,"mainEntity":58},"FAQPage",[59,65,69],{"name":60,"@type":61,"acceptedAnswer":62},"What is the structure of the exam across Sections A and B?","Question",{"text":63,"@type":64},"Candidates answer all questions in Section A, and answer one question in Section B.","Answer",{"name":66,"@type":61,"acceptedAnswer":67},"What topics are covered in the questions?",{"text":68,"@type":64},"The paper covers bicycle gear cables and control cables, hydraulic systems, a lever mechanism for lathe speed control, gear classifications, thread pitch, logic symbols with truth tables, and capacitor characteristics including circuit delay components.",{"name":70,"@type":61,"acceptedAnswer":71},"What are the key instructions for writing answers?",{"text":72,"@type":64},"Write the centre number, candidate number and name on all work. Use dark blue or black pen, HB pencil for diagrams or graphs, and do not write in any barcodes.","https://schema.org",{"og:url":32,"og:type":75,"og:title":10,"og:site_name":45,"og:description":12},"article",{"robots":77,"canonical":32},"index,follow",{"doc_id":79,"site_id":7},642358,1792999301,{"code":4,"msg":82,"data":83},"success",{"doc_id":79,"user_id":84,"nickname":42,"user_avatar":85,"doc_module":4,"category_id":33,"category_name":29,"doc_title":10,"doc_description":12,"doc_content":86,"file_id":87,"file_url":88,"file_type":89,"file_size":90,"view_count":55,"is_deleted":4,"is_public":22,"is_downloadable":22,"audit_status":22,"page_count":91,"language":92,"language_code":8,"site_id":7,"html_lang":8,"table_of_contents":93,"faqs":94,"seo_title":95,"seo_description":12,"update_tm":96,"read_time":97},549758252649,"https://ap-avatar.wpscdn.com/avatar/8000253669c5317157?_k=1778319167496531819","Candidate Name    \nCentre Number  \n________________________________  \nCandidate Number    \nCAMBRIDGE INTERNATIONAL EXAMINATIONS  \nCambridge International General Certificate of Secondary Education  \n0445/42  \nDESIGN AND TECHNOLOGY  \nPaper 4 Systems and Control  \nMay/June 2018  \nTIME: 1 hour  \nSUITABLE FOR VISUALLY IMPAIRED CANDIDATES  \nCandidates answer on the Question Paper.  \nAdditional Materials: Insert for question 10.  \nREAD INSTRUCTIONS OVERLEAF  \nDC (NH/CB) 172930  \nThe whole of this paper is © UCLES 2018.  \nREAD THESE INSTRUCTIONS FIRST  \nWrite your Centre number, candidate number and name on all the work you hand in.  \nWrite in dark blue or black pen.  \nYou may use an HB pencil for any diagrams or graphs. Do not use staples, paper clips, glue or correction fluid. DO NOT WRITE IN ANY BARCODES.  \nSECTION A  \nAnswer ALL questions in this section.  \nSECTION B  \nAnswer ONE question in this section.  \nYou may use a calculator.  \nAt the end of the examination, fasten all your work securely together.  \nThe number of marks is given in brackets [ ] at the end of each question or part question.  \nThe total of the marks for this paper is 50.  \n2  \nBLANK PAGE  \n3  \nSECTION A  \nAnswer ALL questions in this section.  \n1 Fig. 1 on the opposite page shows the rear derailleur gear on a cycle with a close up view of the gear cable.  \n(a) Name the force that has been applied, when manufacturing the inner gear cable to keep the strands of cable in position.  \n  [1]  \n(b) The outer gear cable has a nylon lining.  \nGive TWO benefits of using the nylon lining.  \n1    \n2    \n[2]  \n(c) Explain why small radius bends should be avoided in the gear cable when it is attached to  \nthe cycle.  \n  [2]  \n4  \n5  \nFIG. 1  \nouter  \ngear cable  \ninner gear cable  \ninner gear cable  \nouter  \ngear cable   \nnylon lining  \n2 (a) Explain why steel is used for control cables on a cycle.  \n__________________________________________  \n__________________________________________  \n   [2]  \n(b) State the force being used when a control cable is operated.  \n   [1]  \n3 Hydraulic systems are now used for many applications rather than a control cable.  \nState the force created in a hydraulic system.  \n  [1]  \n6  \n4 Fig. 2 shows the speed control lever on a wood turning lathe.  \nFIG. 2  \n(a) Complete THREE of the labels to show the position of effort, load and fulcrum on the lever when it is used to change the speed of the lathe.  \n[3]  \n(b) State the order of lever used.  \n  [1]  \n5 Choose from the terms below to complete the table. There are three spaces to fill.  \nBEVEL GEAR IDLER GEAR  \nRACK AND PINION WORM GEAR  \n\n| REQUIREMENT | METHOD |\n| --- | --- |\n| Transfer drive through 90° with no change in speed |  |\n| Provide a large reduction in speed in a small space |  |\n| Make driver and driven shafts rotate in the same direction |  |\n\n[3]  \n6 Fig. 3 shows a piece of rod with a square thread cut into it.  \nFIG. 3  \n\n|  |  |  |\n| --- | --- | --- |\n\n3 6  \nState the pitch of the thread.  \n   [1]  \n8  \n7 Fig. 4 shows two logic symbols with truth tables for each.  \nFIG. 4  \nA ~~ ~~  Q 1  \nB ~~ ~~  \nName   \nA ~~ ~~B ~~ ~~  \nName   \n\n| A | B | Q1 | Q2 |\n| --- | --- | --- | --- |\n| 0 | 0 |  |  |\n| 0 | 1 |  |  |\n| 1 | 0 |  |  |\n| 1 | 1 |  |  |\n\n(a) Write the name under each symbol. [2]  \n(b) Complete the truth table.  \nThere are eight spaces to fill. [2]  \n9  \n8 A catalogue describes two capacitors in the following way:  \n• electrolytic capacitor 3300 μF 30 Vdc ± 20%  \n• ceramic capacitor 100 pF 50 Vdc ± 10%.  \n(a) Explain what is meant by 30 Vdc and 50 Vdc in the description of the capacitors.  \n__________________________________________  \n   [2]  \n(b) State why the electrolytic capacitor value is likely to vary more from its stated value than the ceramic capacitor.  \n__________________________________________  \n   [1]  \n9 Name the discrete component used with a capacitor to produce a delay in a circuit.  \n   [1]  \n10","cbCaiebM0mWuNEMb","https://ap.wps.com/l/cbCaiebM0mWuNEMb","pdf",31281571,36,"English","# Instructions\n# Section A\n## Question 1\n## Question 2\n## Question 3\n## Question 4\n## Question 5\n## Question 6\n## Question 7\n## Question 8\n## Question 9\n## Question 10","[{\"question\":\"What is the structure of the exam across Sections A and B?\",\"answer\":\"Candidates answer all questions in Section A, and answer one question in Section B.\"},{\"question\":\"What topics are covered in the questions?\",\"answer\":\"The paper covers bicycle gear cables and control cables, hydraulic systems, a lever mechanism for lathe speed control, gear classifications, thread pitch, logic symbols with truth tables, and capacitor characteristics including circuit delay components.\"},{\"question\":\"What are the key instructions for writing answers?\",\"answer\":\"Write the centre number, candidate number and name on all work. Use dark blue or black pen, HB pencil for diagrams or graphs, and do not write in any barcodes.\"}]","DESIGN AND TECHNOLOGY - Paper 4 Systems and Control - Question Paper 04 | PDF",1792721949,91,{"code":4,"msg":82,"data":99},[100,104,108,111,115,120,125,130,135,138,142],{"id":22,"doc_module":4,"doc_module_name":25,"category_name":101,"show_sort_weight":102,"slug":103},"Story & Novel",90,"story-novel",{"id":26,"doc_module":4,"doc_module_name":25,"category_name":105,"show_sort_weight":106,"slug":107},"Literature",80,"literature",{"id":33,"doc_module":4,"doc_module_name":25,"category_name":29,"show_sort_weight":109,"slug":110},70,"exam",{"id":55,"doc_module":4,"doc_module_name":25,"category_name":112,"show_sort_weight":113,"slug":114},"Comic",60,"comic",{"id":116,"doc_module":4,"doc_module_name":25,"category_name":117,"show_sort_weight":118,"slug":119},6,"Technology",50,"technology",{"id":121,"doc_module":4,"doc_module_name":25,"category_name":122,"show_sort_weight":123,"slug":124},7,"Healthcare",40,"healthcare",{"id":126,"doc_module":4,"doc_module_name":25,"category_name":127,"show_sort_weight":128,"slug":129},8,"Research & Report",30,"research-report",{"id":131,"doc_module":4,"doc_module_name":25,"category_name":132,"show_sort_weight":133,"slug":134},9,"Religion & Spirituality",20,"religion-spirituality",{"id":133,"doc_module":4,"doc_module_name":25,"category_name":136,"show_sort_weight":133,"slug":137},"World Cup","world-cup",{"id":139,"doc_module":4,"doc_module_name":25,"category_name":140,"show_sort_weight":139,"slug":141},10,"Lifestyle","lifestyle",{"id":143,"doc_module":4,"doc_module_name":25,"category_name":144,"show_sort_weight":55,"slug":145},19,"General","general"]