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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. Supply current to the rotating commutator from an external source






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






3. 10MHZ






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






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






6. Low pressure

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7. AC to DC






8. 1/2Xmass X velocity X velocity






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






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






11. Good wear - case hardening. ball bearings






12. 1/4 of the wavelength (higher better)






13. These have weaker secondary bonds which allow the stretching






14. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear






15. 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.






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






17. Elongation of grain flow in direction of rolling






18. 100GHZ+






19. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures






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






21. Rubbers






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






23. Area parallel to force






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






25. MA=VR






26. Good toughness and fatigue. high strength structures






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






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






29. Hard - strong






30. High pressure

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31. Solid at room temp - weak secondary bonds. can be reheated multiply times.






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






33. Ma/vr x 100/1






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






35. Usually used together - strengthening and toughness






36. Vertical






37. 1GHZ






38. 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.






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






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






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. Area load piston/area of effort piston






43. Mass X gravity X height






44. Load/effort






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






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






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






48. 100khz






49. 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






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







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Can you answer 50 questions in 15 minutes?


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