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






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






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






4. Results from the changing anode and cathode regions over the entire surface






5. Glass that is strengthened by introducing stress through rapid heating and cooling of the glass surfaces






6. A cable made of optical fibers that can transmit large amounts of information at the speed of light






7. 1/2Xmass X velocity X velocity






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






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






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






11. Load/effort






12. High pressure

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






14. 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 Fluorescent light is turned on to expose any left over - I.e in the cracks






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






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






17. 100khz






18. Based on the principle that magnetic materials will have distorted magnetic fields in the vicinity of material defects






19. Elongation of grain flow in direction of rolling






20. Hard - brittle






21. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles






22. 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






23. 1GHZ






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






25. Horizontal






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






27. Usually used together - strengthening and toughness






28. 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






29. Resulting from combined effect of stresses set up within the metal






30. Soft - ductile






31. Mass X gravity X height






32. 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






33. Area load piston/area of effort piston






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






35. Area parallel to force






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






37. Produces; harder - stronger and less ductile product






38. When upper die is dropped on bottom






39. Good toughness and fatigue. high strength structures






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






41. MA=VR






42. Good high temp wear - tools






43. 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






44. Sound waves sent through a material - much like sonar. Internal defects appear because they use more energy to go through it.






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






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






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






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






49. Can only be softened once - bonded strongly - generally stronger that thermoplastics. stronger secondary bonds






50. 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