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






2. 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






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






4. Ma/vr






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






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






7. Good wear - case hardening. ball bearings






8. 100GHZ+






9. 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






10. Load/area






11. 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.






12. 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






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






14. 10MHZ






15. Vertical






16. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures






17. AC to DC






18. 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






19. Hard - brittle






20. 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






21. Usually used together - strengthening and toughness






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






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






24. 100khz






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






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






27. 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






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






29. Elongation of grain flow in direction of rolling






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






31. Good toughness and fatigue. high strength structures






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






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






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






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






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






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. Low pressure

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






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






41. Rubbers






42. Load/effort






43. Area load piston/area of effort piston






44. Area parallel to force






45. Ma/vr x 100/1






46. Hard - strong






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






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






49. 1%<X<2% carbon. more cementite - used for files






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