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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. 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






3. Rubbers






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






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






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






7. Low pressure

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8. Use of xrays passed through the material to make a visual record of internal structures on specially sensitized film






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






10. 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






11. Vertical






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






13. 1/4 of the wavelength (higher better)






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






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






16. Resulting from exposure to damp environments and liquids.






17. Horizontal






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






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






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






21. MA=VR






22. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures






23. Good high temp wear - tools






24. When upper die is dropped on bottom






25. 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






26. Difference/original






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






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






29. Good wear - case hardening. ball bearings






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






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






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






33. 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






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






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






36. Load/area






37. Good toughness and fatigue. high strength structures






38. Usually used together - strengthening and toughness






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






40. A motor that is light - rugged and very reliable - runs on ac current and are more common in robotics. Can only run at a certain speed






41. Hard - strong






42. AC to DC






43. Ma/vr






44. 10MHZ






45. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles






46. 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.






47. Ma/vr x 100/1






48. 1/2Xmass X velocity X velocity






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






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






Can you answer 50 questions in 15 minutes?



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