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






2. Vertical






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






4. 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






5. When upper die is dropped on bottom






6. 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.






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






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






9. Hard - strong






10. Good toughness and fatigue. high strength structures






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






12. 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






13. Low pressure

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






15. 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






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






17. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles






18. AC to DC






19. Load/effort






20. 10MHZ






21. High pressure

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22. Soft - ductile






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






24. 1GHZ






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






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






27. 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






28. Better properties that would come from machining






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






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






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






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






33. 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






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






35. Elongation of grain flow in direction of rolling






36. Ma/vr






37. 1/2Xmass X velocity X velocity






38. MA=VR






39. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures






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






41. These have weaker secondary bonds which allow the stretching






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






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






44. Load/area






45. Resulting from exposure to damp environments and liquids.






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






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






48. 100GHZ+






49. Rubbers






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







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Can you answer 50 questions in 15 minutes?


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