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






2. Can only be softened once - bonded strongly - generally stronger that thermoplastics. stronger secondary bonds






3. 100khz






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






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






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






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






8. 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.






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






10. These have weaker secondary bonds which allow the stretching






11. Area load piston/area of effort piston






12. Vertical






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






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






15. Results from the changing anode and cathode regions over the entire surface






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






17. Good high temp wear - tools






18. Area parallel to force






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






20. 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






21. High pressure

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22. 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






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






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






25. Hard - brittle






26. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles






27. Elongation of grain flow in direction of rolling






28. 1/2Xmass X velocity X velocity






29. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures






30. 1%<X<2% carbon. more cementite - used for files






31. Difference/original






32. Good wear - case hardening. ball bearings






33. Better properties that would come from machining






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






35. 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.






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






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






38. Load/effort






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






40. Usually used together - strengthening and toughness






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






42. 100GHZ+






43. 1GHZ






44. 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






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






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






47. MA=VR






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






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






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