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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. 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.






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






3. Vertical






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






5. Ma/vr






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






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






8. Produces; harder - stronger and less ductile product






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






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






11. Load/area






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






13. Good toughness and fatigue. high strength structures






14. Usually used together - strengthening and toughness






15. These have weaker secondary bonds which allow the stretching






16. Ma/vr x 100/1






17. A solid state component made from three layers of semiconductor material that can amplify the strenght of an electric signal or act as an electronic switch






18. 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






19. Elongation of grain flow in direction of rolling






20. Area parallel to force






21. 1/2Xmass X velocity X velocity






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






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






24. 1GHZ






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






26. Hard - strong






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






28. Good wear - case hardening. ball bearings






29. Better properties that would come from machining






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






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






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






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






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






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






36. 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






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






38. 1/4 of the wavelength (higher better)






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






40. 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






41. High pressure

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






43. Difference/original






44. Mass X gravity X height






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






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






47. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles






48. 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






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






50. Soft - ductile






Can you answer 50 questions in 15 minutes?



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