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






2. Good high temp wear - tools






3. The greater the sulphur the harder the rubber to stretch






4. 1GHZ






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






6. Load/area






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






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






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






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






11. Usually used together - strengthening and toughness






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






13. Produces; harder - stronger and less ductile product






14. Good wear - case hardening. ball bearings






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






16. Mass X gravity X height






17. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures






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






19. MA=VR






20. Area parallel to force






21. 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






22. 100GHZ+






23. 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.






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






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






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






27. These have weaker secondary bonds which allow the stretching






28. Low pressure

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






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






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






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






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






34. Hard - strong






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






36. 1/2Xmass X velocity X velocity






37. Resulting from exposure to damp environments and liquids.






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






39. Difference/original






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






41. 1%<X<2% carbon. more cementite - used for files






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






43. Hard - brittle






44. Good toughness and fatigue. high strength structures






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






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






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






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






49. 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






50. 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.