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






2. 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.






3. High pressure


4. Good toughness and fatigue. high strength structures






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






6. When upper die is dropped on bottom






7. 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






8. 1/2Xmass X velocity X velocity






9. 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






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






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






12. Vertical






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






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






15. Hard - brittle






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






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






18. A device that converts the AC inside a DC generator to a DC output or converts a DC supply to an AC inside a DC motor.keeping the armature rotating






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






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






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






22. Hard - strong






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






24. AC to DC






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






26. These have weaker secondary bonds which allow the stretching






27. Elongation of grain flow in direction of rolling






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






29. 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






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






31. 100GHZ+






32. Load/effort






33. Load/area






34. Soft - ductile






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






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






37. Rubbers






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






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






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






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






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






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






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






45. 1%<X<2% carbon. more cementite - used for files






46. Mass X gravity X height






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






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






49. 1/4 of the wavelength (higher better)






50. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles