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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. Produces; harder - stronger and less ductile product






2. 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






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






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






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






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






7. 100khz






8. Area load piston/area of effort piston






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






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






11. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear






12. Horizontal






13. Load/area






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






15. 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.






16. Low pressure

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17. 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






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






19. 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






20. 1GHZ






21. Rubbers






22. 100GHZ+






23. Good wear - case hardening. ball bearings






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






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






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






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






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






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. Elongation of grain flow in direction of rolling






31. Hard - brittle






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






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






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






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






36. 1%<X<2% carbon. more cementite - used for files






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






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






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






40. MA=VR






41. Ma/vr x 100/1






42. Area parallel to force






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






44. When upper die is dropped on bottom






45. Usually used together - strengthening and toughness






46. 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






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






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






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






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