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






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






3. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles






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






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






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






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






8. 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






9. 100khz






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






11. Usually used together - strengthening and toughness






12. 1/2Xmass X velocity X velocity






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






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






15. Produces; harder - stronger and less ductile product






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






17. Resulting from exposure to damp environments and liquids.






18. Soft - ductile






19. AC to DC






20. Good toughness and fatigue. high strength structures






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






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






23. Difference/original






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






25. High pressure

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






27. Vertical






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






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






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






31. Good wear - case hardening. ball bearings






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






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






34. 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.






35. 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






36. 100GHZ+






37. 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






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






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






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






41. 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






42. Good high temp wear - tools






43. Horizontal






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






45. Hard - brittle






46. 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






47. Rubbers






48. 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






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






50. Better properties that would come from machining