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






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






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






4. MA=VR






5. 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.






6. Resulting from exposure to damp environments and liquids.






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






8. 1/2Xmass X velocity X velocity






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






10. Load/area






11. Better properties that would come from machining






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






13. Difference/original






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






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






16. 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






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






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






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






20. Low pressure

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






22. 100khz






23. These have weaker secondary bonds which allow the stretching






24. 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






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






26. Rubbers






27. 1/4 of the wavelength (higher better)






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. Area load piston/area of effort piston






30. AC to DC






31. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear






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






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






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






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






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






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






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






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






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






41. 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






42. Area parallel to force






43. Good high temp wear - tools






44. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles






45. Good wear - case hardening. ball bearings






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






47. Vertical






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






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






50. 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







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Can you answer 50 questions in 15 minutes?


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