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






2. 10MHZ






3. MA=VR






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






5. Rubbers






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






7. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles






8. Soft - ductile






9. Vertical






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






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






12. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear






13. 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






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






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






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






17. Better properties that would come from machining






18. Ma/vr






19. Area parallel to force






20. Load/area






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






22. 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.






23. 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






24. These have weaker secondary bonds which allow the stretching






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






26. 100GHZ+






27. Horizontal






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






29. Area load piston/area of effort piston






30. 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.






31. Mass X gravity X height






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






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






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






35. Good wear - case hardening. ball bearings






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






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






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






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






40. 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






41. Load/effort






42. 1%<X<2% carbon. more cementite - used for files






43. 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






44. Hard - brittle






45. AC to DC






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






47. Difference/original






48. 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






49. Resulting from exposure to damp environments and liquids.






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