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






2. Good wear - case hardening. ball bearings






3. 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






4. Resulting from exposure to oxygen in the atmosphere - chemical fumes - steam - flue gas. creates a layer of metal oxide.






5. MA=VR






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






7. 1/4 of the wavelength (higher better)






8. 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






9. Good toughness and fatigue. high strength structures






10. Ma/vr x 100/1






11. 1GHZ






12. Hard - brittle






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






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






15. Ma/vr






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






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






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






19. Area load piston/area of effort piston






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






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






22. AC to DC






23. Better properties that would come from machining






24. These have weaker secondary bonds which allow the stretching






25. Low pressure

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






27. Difference/original






28. Produces; harder - stronger and less ductile product






29. 100khz






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






31. 100GHZ+






32. 1%<X<2% carbon. more cementite - used for files






33. 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






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






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






36. 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






37. Soft - ductile






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






39. Good high temp wear - tools






40. Elongation of grain flow in direction of rolling






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






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






43. 10MHZ






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






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






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






47. High pressure

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






49. Rubbers






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