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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. 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.






2. Rubbers






3. 1%<X<2% carbon. more cementite - used for files






4. Good wear - case hardening. ball bearings






5. MA=VR






6. 1/4 of the wavelength (higher better)






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






8. Low pressure

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






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






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






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






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






14. Elongation of grain flow in direction of rolling






15. Ma/vr x 100/1






16. 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






17. 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






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






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






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






21. 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






22. 1/2Xmass X velocity X velocity






23. Better properties that would come from machining






24. 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






25. Hard - strong






26. Vertical






27. Soft - ductile






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






29. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear






30. These have weaker secondary bonds which allow the stretching






31. 1GHZ






32. Load/area






33. 100khz






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






35. 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






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






37. Good high temp wear - tools






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






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






40. Hard - brittle






41. 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






42. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles






43. 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.






44. Good toughness and fatigue. high strength structures






45. Resulting from exposure to damp environments and liquids.






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






47. When upper die is dropped on bottom






48. Mass X gravity X height






49. Area load piston/area of effort piston






50. 100GHZ+