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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. 100khz






2. 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






3. 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






4. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures






5. 1GHZ






6. Hard - brittle






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






8. 1%<X<2% carbon. more cementite - used for files






9. Ma/vr x 100/1






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






11. Ma/vr






12. Good toughness and fatigue. high strength structures






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






14. 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.






15. These have weaker secondary bonds which allow the stretching






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






17. 10MHZ






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






19. Usually used together - strengthening and toughness






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






21. 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






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






23. 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






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






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






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






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






28. Hard - strong






29. Low pressure

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30. Horizontal






31. Area parallel to force






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






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






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






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






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






37. 100GHZ+






38. High pressure

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39. Good wear - case hardening. ball bearings






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






41. 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






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






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






44. Resulting from exposure to damp environments and liquids.






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






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






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






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






49. Load/effort






50. Produces; harder - stronger and less ductile product