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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. Elongation of grain flow in direction of rolling






2. These have weaker secondary bonds which allow the stretching






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






4. 1%<X<2% carbon. more cementite - used for files






5. Load/area






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






7. High pressure

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8. Usually used together - strengthening and toughness






9. 100GHZ+






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






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






12. Better properties that would come from machining






13. 100khz






14. Good toughness and fatigue. high strength structures






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






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






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






18. Good high temp wear - tools






19. Vertical






20. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear






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






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






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






24. Difference/original






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. Horizontal






27. Area parallel to force






28. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures






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






30. When upper die is dropped on bottom






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






32. MA=VR






33. 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.






34. Hard - strong






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






36. 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






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






38. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles






39. Hard - brittle






40. 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






41. Load/effort






42. 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






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






44. Soft - ductile






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






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. Produces; harder - stronger and less ductile product






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






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






50. Area load piston/area of effort piston