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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. Good toughness and fatigue. high strength structures






2. 100khz






3. 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






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. Rubbers






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






8. Soft - ductile






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






10. Area load piston/area of effort piston






11. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures






12. Produces; harder - stronger and less ductile product






13. MA=VR






14. These have weaker secondary bonds which allow the stretching






15. 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






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






17. When upper die is dropped on bottom






18. 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






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






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






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






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






23. 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.






24. Horizontal






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






26. Load/area






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






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






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






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






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






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






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






34. 10MHZ






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






36. Hard - strong






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






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






39. High pressure


40. 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






41. 1/2Xmass X velocity X velocity






42. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear






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






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






45. 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






46. Resulting from exposure to damp environments and liquids.






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






48. 1/4 of the wavelength (higher better)






49. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles






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