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. Supply current to the rotating commutator from an external source






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






3. AC to DC






4. Usually used together - strengthening and toughness






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






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






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






8. 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






9. Load/area






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






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






12. Good toughness and fatigue. high strength structures






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






14. Hard - brittle






15. 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






16. 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.






17. Soft - ductile






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






19. Vertical






20. Good high temp wear - tools






21. 10MHZ






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






23. Resulting from exposure to damp environments and liquids.






24. Good wear - case hardening. ball bearings






25. Load/effort






26. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures






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






28. 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 developer is then added to it to expose any left over - I.e in the cracks






29. 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






30. 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






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






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






33. 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






34. 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.






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






36. Mass X gravity X height






37. Produces; harder - stronger and less ductile product






38. 100khz






39. 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






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






41. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles






42. Low pressure

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43. These have weaker secondary bonds which allow the stretching






44. High pressure

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45. Hard - strong






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






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






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






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






50. Area parallel to force