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






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






3. Good high temp wear - tools






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






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






6. MA=VR






7. Mass X gravity X height






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






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






10. Load/area






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






12. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures






13. 10MHZ






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






15. Good toughness and fatigue. high strength structures






16. 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






17. Rubbers






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






19. 1/4 of the wavelength (higher better)






20. 100GHZ+






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






22. 1/2Xmass X velocity X velocity






23. Area load piston/area of effort piston






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






25. When upper die is dropped on bottom






26. Ma/vr x 100/1






27. 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






28. Good wear - case hardening. ball bearings






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






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






31. Hard - strong






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






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






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






35. Low pressure

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






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






38. Ma/vr






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






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. These have weaker secondary bonds which allow the stretching






42. 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






43. 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






44. 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.






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






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






47. 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






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






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






50. High pressure

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