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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. Horizontal






3. 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






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






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






6. Ma/vr x 100/1






7. 1/2Xmass X velocity X velocity






8. 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






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






10. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures






11. Good wear - case hardening. ball bearings






12. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles






13. Resulting from exposure to damp environments and liquids.






14. Low pressure

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15. 100khz






16. AC to DC






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






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






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






20. 1%<X<2% carbon. more cementite - used for files






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






22. Better properties that would come from machining






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






24. These have weaker secondary bonds which allow the stretching






25. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear






26. Area load piston/area of effort piston






27. Rubbers






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






29. Area parallel to force






30. 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






31. MA=VR






32. Usually used together - strengthening and toughness






33. Involves heating the piece above Red heat and then letting it cool in air. causes smaller grains






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






35. Hard - strong






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






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






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






39. Soft - ductile






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






41. High pressure

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42. Load/area






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






44. Produces; harder - stronger and less ductile product






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






46. 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






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






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






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






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