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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. Low pressure

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






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






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






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






6. 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.






7. 100GHZ+






8. 10MHZ






9. 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






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






11. Horizontal






12. 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






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






14. 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






15. Usually used together - strengthening and toughness






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






17. High pressure

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18. Difference/original






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






20. Hard - brittle






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






22. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear






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






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






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






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






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






28. Area load piston/area of effort piston






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






30. Vertical






31. Elongation of grain flow in direction of rolling






32. 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.






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






34. Mass X gravity X height






35. Rubbers






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






37. 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






38. Area parallel to force






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






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






41. Better properties that would come from machining






42. These have weaker secondary bonds which allow the stretching






43. 1%<X<2% carbon. more cementite - used for files






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






45. MA=VR






46. Produces; harder - stronger and less ductile product






47. Hard - strong






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






49. Ma/vr






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