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






2. Horizontal






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






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






5. 1%<X<2% carbon. more cementite - used for files






6. Usually used together - strengthening and toughness






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






8. Area load piston/area of effort piston






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






10. 1GHZ






11. 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






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






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






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






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






16. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures






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. High pressure


19. Hard - strong






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






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. 100khz






23. Soft - ductile






24. 100GHZ+






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






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






27. 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.






28. Good wear - case hardening. ball bearings






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






30. Difference/original






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






32. Ma/vr






33. 1/2Xmass X velocity X velocity






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






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






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






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






38. Hard - brittle






39. Low pressure


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






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






42. Resulting from exposure to damp environments and liquids.






43. 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






44. Produces; harder - stronger and less ductile product






45. 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






46. Good high temp wear - tools






47. Good toughness and fatigue. high strength structures






48. Ma/vr x 100/1






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






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