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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. AC to DC






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






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






4. Hard - brittle






5. 1%<X<2% carbon. more cementite - used for files






6. 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






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






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






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






10. 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






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






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






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






14. 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






15. Horizontal






16. 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.






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






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






19. Soft - ductile






20. MA=VR






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






22. Mass X gravity X height






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






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






25. Low pressure

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26. 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






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






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






29. Better properties that would come from machining






30. Produces; harder - stronger and less ductile product






31. 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






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






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






34. 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






35. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear






36. Area load piston/area of effort piston






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






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






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






40. Area parallel to force






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 Fluorescent light is turned on to expose any left over - I.e in the cracks






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






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






44. When upper die is dropped on bottom






45. Ma/vr x 100/1






46. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures






47. Good wear - case hardening. ball bearings






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






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






50. High pressure

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