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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. Resulting from exposure to damp environments and liquids.






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






3. 1%<X<2% carbon. more cementite - used for files






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






5. AC to DC






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






7. Load/area






8. Good high temp wear - tools






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






10. Hard - brittle






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






12. Mass X gravity X height






13. 1GHZ






14. Ma/vr x 100/1






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






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






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






18. Vertical






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






20. Load/effort






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






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






23. 1/2Xmass X velocity X velocity






24. 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






25. 1/4 of the wavelength (higher better)






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






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






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






29. 100GHZ+






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






31. Area parallel to force






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






33. 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






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






35. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles






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






37. 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






38. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear






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






40. Ma/vr






41. Based on the principle that magnetic materials will have distorted magnetic fields in the vicinity of material defects






42. 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.






43. 10MHZ






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






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






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






47. Better properties that would come from machining






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






49. Usually used together - strengthening and toughness






50. High pressure

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