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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. 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






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






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






4. 1/2Xmass X velocity X velocity






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






6. Area load piston/area of effort piston






7. Area parallel to force






8. Ma/vr






9. 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.






10. Hard - strong






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






12. 100khz






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






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






15. AC to DC






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






17. Ma/vr x 100/1






18. 100GHZ+






19. Resulting from exposure to damp environments and liquids.






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






21. Produces; harder - stronger and less ductile product






22. Low pressure

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23. Good toughness and fatigue. high strength structures






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






25. 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.






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






27. Rubbers






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






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






30. High pressure

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






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






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






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






35. Vertical






36. Hard - brittle






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






38. Glass that is strengthened by introducing stress through rapid heating and cooling of the glass surfaces






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






40. Difference/original






41. Soft - ductile






42. Horizontal






43. 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






44. MA=VR






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






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






47. Load/area






48. Mass X gravity X height






49. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear






50. Load/effort