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Engineering Studies

Subject : engineering
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. X<1% silicon no graphite - has carbon/carbide. very brittle






2. Produces; harder - stronger and less ductile product






3. Soaked cast iron at 870c for long time then cooled slow






4. Usually used together - strengthening and toughness






5. When upper die is dropped on bottom






6. These have weaker secondary bonds which allow the stretching






7. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles






8. Vertical






9. Low pressure

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10. Good wear - case hardening. ball bearings






11. Load/area






12. Makes brittle by heating and then cooling quickly - less flexible. Red Heat then quenching






13. Being forced - under pressure - through a hole like toothpaste. either hot or cold






14. An orbit less than 1 -500 km. above the Earth's surface.






15. 100GHZ+






16. 1%<X<2% carbon. more cementite - used for files






17. Difference/original






18. Squeezing of the hot metal between two shaped dies excess is cut off






19. Dye is sprayed onto a surface - with excess being wiped away - meaning any left on the piece would be in cracks that exist in it. A developer is then added to it to expose any left over - I.e in the cracks






20. Rubbers






21. Soft - ductile






22. Better properties that would come from machining






23. Between 2000-35 -700km above the earth's surface.






24. Majority silicon X>1.5% for graphite. Graphite in flakes that cause stress points






25. A strong hard building material composed of sand and gravel and cement and water






26. Us a metal that is more reactive. It is connect to another metal and corrodes instead of the other metal. the Anode is replaced periodically






27. Can be reflected of the ionosphere - 3 to 30 megahertz






28. A motor that is light - rugged and very reliable - runs on ac current and are more common in robotics. Can only run at a certain speed






29. Supply current to the rotating commutator from an external source






30. Forming of metal by compressive force above recrystallization point.






31. Glass made with plates of plastic or resin or other material between two sheets of glass to prevent shattering






32. Area parallel to force






33. Hard - brittle






34. Load/effort






35. Resulting from exposure to damp environments and liquids.






36. Mass X gravity X height






37. Softening a material such as metal by controlled heating and cooling. This makes the metal less brittle and more easily adaptable. Soaking till austenite then cooling slowly. large grains






38. Solid at room temp - weak secondary bonds. can be reheated multiply times.






39. Use of xrays passed through the material to make a visual record of internal structures on specially sensitized film






40. A method of transmitting signals by changing the amplitude of a waves






41. Horizontal






42. Good toughness and fatigue. high strength structures






43. Occurs when the metal is hammered by a vertically moving tool onto a stationary tool






44. Allows for another signal to be sent along the carrier signal






45. Resulting from exposure to oxygen in the atmosphere - chemical fumes - steam - flue gas. creates a layer of metal oxide.






46. Controlled cooling after heating metal to attain a degree of hardness. removes internal stresses






47. 1GHZ






48. Steel reinforcing rusts - rust has a greater volume concrete then breaks of as a result.






49. A flexible communications cable that contains pairs of insulated copper wires that are twisted together for reduction of EMI and RFI and covered with an outer insulating jacket.






50. 100khz