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






2. 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






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






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






5. 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






6. Produces; harder - stronger and less ductile product






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






8. Ma/vr






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






10. Resulting from exposure to damp environments and liquids.






11. Vertical






12. Load/effort






13. Rubbers






14. 1%<X<2% carbon. more cementite - used for files






15. Good wear - case hardening. ball bearings






16. 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






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






18. 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






19. Usually used together - strengthening and toughness






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






21. 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






22. Hard - strong






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






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






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






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






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






28. Horizontal






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






30. 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






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






32. 100khz






33. Difference/original






34. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear






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






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






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






38. 1/2Xmass X velocity X velocity






39. Area parallel to force






40. 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.






41. Mass X gravity X height






42. MA=VR






43. Load/area






44. High pressure

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






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






47. 1GHZ






48. 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






49. 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.






50. 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