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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. When upper die is dropped on bottom






2. Usually used together - strengthening and toughness






3. Ma/vr x 100/1






4. 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






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






6. 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.






7. Elongation of grain flow in direction of rolling






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






9. Rubbers






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






11. Mass X gravity X height






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






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






14. Load/area






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






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






17. Produces; harder - stronger and less ductile product






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






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






20. 100GHZ+






21. Low pressure

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22. Vertical






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






24. Good high temp wear - tools






25. High pressure

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






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






28. Area load piston/area of effort piston






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






30. 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






31. 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






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






33. Area parallel to force






34. Ma/vr






35. Hard - strong






36. 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






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






38. 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






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






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






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






42. Soft - ductile






43. AC to DC






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






45. 10MHZ






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






47. 100khz






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






49. 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.






50. 1/2Xmass X velocity X velocity