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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. 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






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






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






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






6. Produces; harder - stronger and less ductile product






7. 1GHZ






8. Hard - brittle






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






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






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






12. Ma/vr x 100/1






13. Resulting from exposure to damp environments and liquids.






14. Difference/original






15. AC to DC






16. 100khz






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






18. Horizontal






19. Load/area






20. Load/effort






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






22. Area parallel to force






23. These have weaker secondary bonds which allow the stretching






24. Good wear - case hardening. ball bearings






25. 1/2Xmass X velocity X velocity






26. Rubbers






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






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






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






30. 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






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






32. Soft - ductile






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






35. Better properties that would come from machining






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






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






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






39. 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






40. Good high temp wear - tools






41. Vertical






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






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






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






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






46. High pressure

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47. 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






48. Mass X gravity X height






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






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