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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. Supply current to the rotating commutator from an external source






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






3. Soft - ductile






4. Ma/vr x 100/1






5. 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






6. Load/effort






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






8. Horizontal






9. 1%<X<2% carbon. more cementite - used for files






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






11. 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






12. 1/2Xmass X velocity X velocity






13. 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






14. 1/4 of the wavelength (higher better)






15. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles






16. When upper die is dropped on bottom






17. Usually used together - strengthening and toughness






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






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






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






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






22. Area load piston/area of effort piston






23. 1GHZ






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






25. Area parallel to force






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






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






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






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






30. Vertical






31. These have weaker secondary bonds which allow the stretching






32. MA=VR






33. Elongation of grain flow in direction of rolling






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






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






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






37. 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






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






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






40. 100GHZ+






41. 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






42. Good wear - case hardening. ball bearings






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






44. Produces; harder - stronger and less ductile product






45. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear






46. 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






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






48. Ma/vr






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






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