Test your basic knowledge |

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






2. Hard - brittle






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






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






5. Good high temp wear - tools






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






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






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






9. Ma/vr






10. 100khz






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






12. Resulting from exposure to damp environments and liquids.






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






14. Mass X gravity X height






15. 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






16. Usually used together - strengthening and toughness






17. 1GHZ






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






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






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






21. 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.






22. 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.






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






24. 1%<X<2% carbon. more cementite - used for files






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






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






27. Elongation of grain flow in direction of rolling






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






29. 1/2Xmass X velocity X velocity






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






31. 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






32. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles






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






34. Area load piston/area of effort piston






35. Horizontal






36. Ma/vr x 100/1






37. 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






38. 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






39. Rubbers






40. 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






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






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






43. Soft - ductile






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






45. Hard - strong






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






47. Difference/original






48. Produces; harder - stronger and less ductile product






49. Vertical






50. Load/effort