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






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






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






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






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






6. 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.






7. 1/4 of the wavelength (higher better)






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






9. 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






10. Hard - brittle






11. Ma/vr x 100/1






12. 1%<X<2% carbon. more cementite - used for files






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






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






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






16. 100khz






17. 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






18. 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.






19. Soft - ductile






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






21. When upper die is dropped on bottom






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






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






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






25. Area parallel to force






26. 1/2Xmass X velocity X velocity






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






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






29. Low pressure

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






31. Produces; harder - stronger and less ductile product






32. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles






33. Good toughness and fatigue. high strength structures






34. 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






35. Elongation of grain flow in direction of rolling






36. 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






37. 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






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






39. Mass X gravity X height






40. AC to DC






41. 10MHZ






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






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






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






45. Good high temp wear - tools






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






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






48. Good wear - case hardening. ball bearings






49. Area load piston/area of effort piston






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