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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. Usually used together - strengthening and toughness






2. Hard - strong






3. Hard - brittle






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






5. MA=VR






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






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






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






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






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






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






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






13. Elongation of grain flow in direction of rolling






14. Good toughness and fatigue. high strength structures






15. 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






16. Vertical






17. Area parallel to force






18. 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






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






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






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






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






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






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






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






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






27. These have weaker secondary bonds which allow the stretching






28. 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






29. Load/area






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






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






32. 1GHZ






33. 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






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






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






36. Good wear - case hardening. ball bearings






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






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






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






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






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






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






44. Load/effort






45. Horizontal






46. Produces; harder - stronger and less ductile product






47. Ma/vr x 100/1






48. Low pressure

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49. High pressure

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50. Difference/original