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






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






3. 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






4. Difference/original






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






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






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






8. Mass X gravity X height






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






10. Horizontal






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






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






13. 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






14. Produces; harder - stronger and less ductile product






15. Ma/vr x 100/1






16. Soft - ductile






17. Good wear - case hardening. ball bearings






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






19. A strong hard building material composed of sand and gravel and cement and water






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






21. Low pressure

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22. Area parallel to force






23. Hard - strong






24. 100khz






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






26. High pressure

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27. Vertical






28. 100GHZ+






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






30. 10MHZ






31. Usually used together - strengthening and toughness






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






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






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






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






36. 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






37. MA=VR






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






39. Good high temp wear - tools






40. 1%<X<2% carbon. more cementite - used for files






41. 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






42. 1/2Xmass X velocity X velocity






43. 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






44. Area load piston/area of effort piston






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






46. These have weaker secondary bonds which allow the stretching






47. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures






48. Elongation of grain flow in direction of rolling






49. Rubbers






50. Resulting from exposure to damp environments and liquids.