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






2. 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






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






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






5. A flexible communications cable that contains pairs of insulated copper wires that are twisted together for reduction of EMI and RFI and covered with an outer insulating jacket.






6. Rubbers






7. High pressure

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






9. Load/effort






10. Produces; harder - stronger and less ductile product






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






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






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






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






15. Soft - ductile






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






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






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






19. Usually used together - strengthening and toughness






20. Mass X gravity X height






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






22. 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.






23. Area parallel to force






24. Low pressure

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25. Resulting from exposure to damp environments and liquids.






26. 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






27. 1%<X<2% carbon. more cementite - used for files






28. 1GHZ






29. 1/4 of the wavelength (higher better)






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






31. 10MHZ






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






33. Elongation of grain flow in direction of rolling






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






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






36. Good toughness and fatigue. high strength structures






37. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles






38. 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






39. MA=VR






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






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






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






43. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear






44. 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






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






46. Ma/vr






47. Vertical






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






49. Load/area






50. AC to DC