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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. 100khz






2. AC to DC






3. Horizontal






4. Rubbers






5. 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






6. 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.






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






8. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles






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






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






11. Area parallel to force






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






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






14. Low pressure

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






16. Soft - ductile






17. 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






18. Hard - strong






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






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






21. 1%<X<2% carbon. more cementite - used for files






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






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






24. Usually used together - strengthening and toughness






25. 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






26. Ma/vr x 100/1






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






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






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






30. Difference/original






31. 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






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






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






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






35. Produces; harder - stronger and less ductile product






36. 1GHZ






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






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






40. 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






41. Resulting from exposure to damp environments and liquids.






42. MA=VR






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






44. 10MHZ






45. Load/effort






46. Hard - brittle






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






48. 100GHZ+






49. 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






50. Good wear - case hardening. ball bearings