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






2. Hard - strong






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






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






5. Resulting from exposure to damp environments and liquids.






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






7. 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






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






9. Ma/vr x 100/1






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






11. Vertical






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






13. 100GHZ+






14. Soft - ductile






15. MA=VR






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






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






18. Elongation of grain flow in direction of rolling






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






20. Horizontal






21. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear






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






23. 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






24. Better properties that would come from machining






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






26. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures






27. 1/2Xmass X velocity X velocity






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






29. Hard - brittle






30. 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.






31. Produces; harder - stronger and less ductile product






32. 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






33. 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






34. Rubbers






35. Area parallel to force






36. 1/4 of the wavelength (higher better)






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






38. Ma/vr






39. 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






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






41. Usually used together - strengthening and toughness






42. Good high temp wear - tools






43. Load/area






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






45. 100khz






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






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






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






49. 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.






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