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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. Area load piston/area of effort piston






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






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






4. 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






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






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






7. Vertical






8. Usually used together - strengthening and toughness






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






10. An orbit in which a satellite orbits Earth at the same rate as Earth rotates and thus stays over the same place all the time






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






12. 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






13. 1/4 of the wavelength (higher better)






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






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






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






17. Hard - brittle






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






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






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






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






22. 10MHZ






23. 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






24. 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.






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






26. Soft - ductile






27. X<1% silicon no graphite - has carbon/carbide. very brittle






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






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






30. Mass X gravity X height






31. Horizontal






32. AC to DC






33. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear






34. Difference/original






35. Rubbers






36. Load/area






37. Low pressure

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38. When upper die is dropped on bottom






39. Good toughness and fatigue. high strength structures






40. 100khz






41. MA=VR






42. Good high temp wear - tools






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






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






45. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures






46. Ma/vr






47. 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.






48. Load/effort






49. 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






50. 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