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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 oxygen in the atmosphere - chemical fumes - steam - flue gas. creates a layer of metal oxide.






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






3. 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






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






5. Elongation of grain flow in direction of rolling






6. 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






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






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






9. Area parallel to force






10. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear






11. 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.






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






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






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






15. Good toughness and fatigue. high strength structures






16. Load/effort






17. Load/area






18. These have weaker secondary bonds which allow the stretching






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






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






21. Hard - brittle






22. Good wear - case hardening. ball bearings






23. When upper die is dropped on bottom






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






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






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






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






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






29. Low pressure

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






31. 1/2Xmass X velocity X velocity






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






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






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






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






36. Good high temp wear - tools






37. Ma/vr x 100/1






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






39. 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






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






41. Ma/vr






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






43. Mass X gravity X height






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






45. 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






46. Resulting from exposure to damp environments and liquids.






47. Soft - ductile






48. 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






49. 100GHZ+






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







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Can you answer 50 questions in 15 minutes?


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