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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. Resulting from exposure to damp environments and liquids.






2. Elongation of grain flow in direction of rolling






3. Area parallel to force






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






5. Better properties that would come from machining






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






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






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






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






10. Good high temp wear - tools






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






12. 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






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. 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






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






16. Load/area






17. 1/2Xmass X velocity X velocity






18. These have weaker secondary bonds which allow the stretching






19. Mass X gravity X height






20. Difference/original






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






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






23. Hard - brittle






24. Vertical






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






26. Load/effort






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






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






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






30. 100khz






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






32. Good wear - case hardening. ball bearings






33. 10MHZ






34. 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






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






36. Soft - ductile






37. 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






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






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






40. 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






41. Ma/vr






42. Horizontal






43. Good toughness and fatigue. high strength structures






44. Low pressure

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45. 100GHZ+






46. Area load piston/area of effort piston






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






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






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






50. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear