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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. Hard - brittle






2. Mass X gravity X height






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






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






5. Resulting from exposure to damp environments and liquids.






6. The quantity of information that can be transmitted through a communication medium in a given amount of time.






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






8. 1/2Xmass X velocity X velocity






9. 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






10. 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.






11. 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






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






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






14. Good toughness and fatigue. high strength structures






15. Low pressure

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






17. Area load piston/area of effort piston






18. Load/effort






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






20. 1/4 of the wavelength (higher better)






21. Hard - strong






22. Usually used together - strengthening and toughness






23. MA=VR






24. Elongation of grain flow in direction of rolling






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






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






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






28. 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






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






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






31. Vertical






32. Better properties that would come from machining






33. 100khz






34. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear






35. Horizontal






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






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






38. Produces; harder - stronger and less ductile product






39. Ma/vr






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






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






42. Good high temp wear - tools






43. x<0.15% carbon. ferrite. good for cold working - rolling sheets






44. Area parallel to force






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






46. 1GHZ






47. 1%<X<2% carbon. more cementite - used for files






48. Rubbers






49. AC to DC






50. 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