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






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






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






4. AC to DC






5. Hard - strong






6. 100khz






7. Use of xrays passed through the material to make a visual record of internal structures on specially sensitized film






8. Produces; harder - stronger and less ductile product






9. 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






10. 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






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






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






13. High pressure

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14. Rubbers






15. Good high temp wear - tools






16. Low pressure

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






18. 100GHZ+






19. Area parallel to force






20. 1/4 of the wavelength (higher better)






21. Elongation of grain flow in direction of rolling






22. Area load piston/area of effort piston






23. 1/2Xmass X velocity X velocity






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






25. Load/area






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






27. Vertical






28. Horizontal






29. Good toughness and fatigue. high strength structures






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






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






32. Hard - brittle






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






34. Better properties that would come from machining






35. 10MHZ






36. When upper die is dropped on bottom






37. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures






38. MA=VR






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






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






41. 1GHZ






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






43. Ma/vr x 100/1






44. Good wear - case hardening. ball bearings






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






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






47. Mass X gravity X height






48. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear






49. 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






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