NST2602 ASSIGNMENT 2 2022.

NST2602 ASSIGNMENT 2 2022. QUESTION 1 Choose any THREE time periods. In each time period write a paragraph of ten lines based on your understanding of the differences of the time periods. Locate the time period in your own context. (15) 1. Bronze Age  The Bronze Age was a prehistoric period marked by the usage of bronze from around 3300 BCE to 1200 BCE. The Bronze Age is the second of the three major periods in the Stone-Bronze-Iron system. A civilization is classified as being in the Bronze Age if it produces bronze by smelting its own copper and alloying it with tin, arsenic, or other metals, or if it trades for bronze from other production zones. Bronze is tougher and more durable than other metals available at the period, providing a technological advantage to Bronze Age civilizations. The creation of the earliest writing differed between Bronze Age societies. The oldest practical writing systems were established in Mesopotamia and Egypt, according to archaeological evidence. It takes place between 2,500 and 1,500 B.C. More complex societies are created than in Neolithic populations. Bronze was found in India, Iran, Armenia, Egypt and Sumerian. The Aegean Sea is an exclusive space for bronze trade. 2. Iron Age  The Iron Age is the final epoch in humanity's three-age divide, which began with prehistory and protohistoric. The Iron Age lasts a different amount of time depending on the locale. Locally, the "Iron Age" begins when iron or steel production has progressed to the extent where iron tools and weaponry are superior to bronze counterparts. Tutankhamun's meteoric iron dagger, for example, dates from the Bronze Age. This transition occurred in the Ancient Near East in the aftermath of the so-called Bronze Age collapse in the 12th century BC. The technology expanded quickly across the Mediterranean Basin and into South Asia. It took a little longer to expand to Central Asia, Eastern Europe, and Central Europe, and Northern Europe wasn't reached until around 500 BC. The Iron Age ends with the commencement of the historical record. The title "Iron Age" is frequently applied to early cultures that practiced ironworking, such as the Nok culture of Nigeria. It develops from 1,500 B.C.This metal is used to make weapons and tools.The Hittites were the first to use iron in 1,300 BC.Being harder than bronze, new metallurgical techniques had to be developed to work it. 3. Industrial Age  The Industrial Age is a historical period defined by the replacement of hand tools with power-driven machinery such as the power loom and the steam engine, as well as the concentration of industry in big institutions, which began around 1760 in Great Britain and later in other nations. While it is widely assumed that the Industrial Age gave way to the Information Age in the late twentieth century, a view that has gained traction since the 1989 Revolutions, manufacturing still accounts for a significant portion of the Third World economy. As a result, it's uncertain whether civilisation has already left the Industrial Age or is still in it, on its way to the Information Age. it possessed the factors of production, land, capital, and labour. the Industrial. QUESTION 2 Read the Scenario below and answer the questions by completing the table that follow: A local municipality placed an advert in the local newspaper for a competition of local high schools to participate. The competition need some best investigation ideas to contribute towards the building of a community hall. Investigation Item Question Answer People Are you one of the people who will use the community hall? Explain (2) I amongst many other local community members will benefit from the community hall. The hall will be used for various services and be available to all local community members. Purpose What will the function of the community hall become? How will it work? (2) The community hall will be versatile its main function would be to be an ABET centre for the community. It will also be used as a soup kitchen (feeding scheme) and host after hour functions such as fundraisers, Covid 19 medical awareness and testing stations. Appearance What shapes might be appropriate? What size? What colours? (3) The hall will be 18 x 10(17.6 x 9.1 minimum clear height). It will be painted light blue with a grey tile roofing. The shape of the hall will resemble a rectangle and the windows will be square. Materials Which materials will be appropriate for your community hall? What systems will you need to control the product? Which parts will you need? (3) Computers will be needed, catering equipment, chairs and tables and also cleaning supplies. There will have to be a community appointed representative voted into the board of committees. Furniture, décor and constant maintenance everyday equipment will be required as well such as grass cutters, brooms etc. Cost Who is your target market? Is the product cost-effective? (2) The local community, NGOs, political party leaders and adults who need basic education and training. The hire fee of the hall as well as workshop training and other services will be free to the community. The board in charge of the hall will do marketing in order to gain sponsorships for programmes used to uplift the community members at the hall. Making Where will you make your model to move? Which direction will your machine move? What tools or machines will be needed? (3) Various tools will be required throughout the construction and fabrication process of the hall such as: Building and power tools will be required such as plain, hammer, chisel, hose pipe paint brush, wheel barrow etc and machinery that will be used are Forklift, concrete mixer etc Environment Where will the product be used? How will the product impact the environment? (2) The hall will be built on a vacant piece of land which was previously a liquidated house. The infrastructure will uplift the community as the project will remove the old ruined property and replace the land with a new brightly painted community hall. Safety Which safety measures will you recommend for the product? What features does it need to avoid accidents? What are the dangers of working with high pressure? Which warning sign will you attach to the product? (4) All personnel who will be managing the hall need to attend basic first aid training. The hall needs to be surveyed by a safety officer and fire extinguishers and water sprinkles will be installed. Warning signs such as emergency exit, fire extinguishers, water sprinkler switch , parking signs, drug and alcohol free zone signs will be displayed at the all in appropriate areas. Quality How will you make it into an affordable product? (2) The hall will be available for bookings made through the local municipality. The booking fee will be budget friendly in order to ascertain continuous funding generation to ensure the hall is constantly renovated and up kept. By ensuring continuous flow in finance, the hall will be able to continue to offer and provide free services to the community. QUESTION 3 3.1 Explain the uses of the following gear drives: 3.1.1 bevel gears