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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. Soft - ductile






2. Usually used together - strengthening and toughness






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






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






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






6. A method of transmitting signals by changing the frequency of a wave






7. 1/2Xmass X velocity X velocity






8. Produces; harder - stronger and less ductile product






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






10. Ma/vr x 100/1






11. 100khz






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






13. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles






14. High pressure

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15. Good high temp wear - tools






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






17. Mass X gravity X height






18. Area load piston/area of effort piston






19. When upper die is dropped on bottom






20. Good toughness and fatigue. high strength structures






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






22. 100GHZ+






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






24. Rubbers






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






26. MA=VR






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






28. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures






29. Ma/vr






30. Difference/original






31. Maximum bending moments X distance to natural axis/ second moment of area






32. These have weaker secondary bonds which allow the stretching






33. Horizontal






34. Resulting from exposure to damp environments and liquids.






35. X<1% silicon no graphite - has carbon/carbide. very brittle






36. 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






37. 1GHZ






38. Field winding parallel to armature winding. Bad for direct coupling






39. An orbit in which a satellite orbits Earth at the same rate as Earth rotates and thus stays over the same place all the time






40. Degradation of a signal as it travels over a cable. Attenuation increased with higher frequencies






41. 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






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






43. The greater the sulphur the harder the rubber to stretch






44. 1%<X<2% carbon. more cementite - used for files






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






46. Load/effort






47. Better properties that would come from machining






48. Used where scarifical anodes cannot supply enough protection - offshore oil rigs - buried pipes - big things. protection is provided by connecting a rectifier to provide a direct current source between the anode and the metal being protected.






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






50. Small amounts of magnesium to make spheres instead of flakes. thus no stress concentrations