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






2. Vertical






3. Difference/original






4. 10MHZ






5. Ma/vr






6. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear






7. 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






8. Produces; harder - stronger and less ductile product






9. Good wear - case hardening. ball bearings






10. These have weaker secondary bonds which allow the stretching






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






12. Elongation of grain flow in direction of rolling






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






14. Better properties that would come from machining






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






16. 1/2Xmass X velocity X velocity






17. 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






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






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






20. 1%<X<2% carbon. more cementite - used for files






21. Good high temp wear - tools






22. Good toughness and fatigue. high strength structures






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






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






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






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






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






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






29. When upper die is dropped on bottom






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






31. Hard - brittle






32. Ma/vr x 100/1






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






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






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






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






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






38. 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






39. 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.






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






41. Low pressure

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42. 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






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






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






45. High pressure

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






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






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






49. Resulting from exposure to damp environments and liquids.






50. 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.