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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. Low pressure

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2. 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






3. Difference/original






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






5. 1/4 of the wavelength (higher better)






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






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






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






9. Rubbers






10. Horizontal






11. AC to DC






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






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






14. Better properties that would come from machining






15. 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






16. Ma/vr x 100/1






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






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






19. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear






20. Soft - ductile






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






22. These have weaker secondary bonds which allow the stretching






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






24. 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






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






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






27. Usually used together - strengthening and toughness






28. 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






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






30. 100khz






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






32. 10MHZ






33. Produces; harder - stronger and less ductile product






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






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






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. Area load piston/area of effort piston






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






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






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






41. Resulting from exposure to damp environments and liquids.






42. Load/effort






43. When upper die is dropped on bottom






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






45. 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






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






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






48. Load/area






49. 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






50. Hard - brittle