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






2. Difference/original






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






4. 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






5. Mass X gravity X height






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






7. Hard - brittle






8. High pressure

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9. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles






10. Usually used together - strengthening and toughness






11. These have weaker secondary bonds which allow the stretching






12. 1/2Xmass X velocity X velocity






13. 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






14. Good wear - case hardening. ball bearings






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






16. Better properties that would come from machining






17. 1%<X<2% carbon. more cementite - used for files






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






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






20. Horizontal






21. Good toughness and fatigue. high strength structures






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






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






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






25. AC to DC






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






27. Ma/vr x 100/1






28. 1/4 of the wavelength (higher better)






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






30. Load/area






31. When upper die is dropped on bottom






32. Hard - strong






33. Ma/vr






34. 1GHZ






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






36. 100khz






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






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






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






40. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear






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






42. MA=VR






43. Rubbers






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






45. Load/effort






46. 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






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






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






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






50. Soft - ductile