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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. Rubbers






2. Area load piston/area of effort piston






3. 10MHZ






4. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures






5. 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.






6. 100khz






7. Good wear - case hardening. ball bearings






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






9. 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






10. 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






11. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear






12. 1%<X<2% carbon. more cementite - used for files






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






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






15. Better properties that would come from machining






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






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






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






19. 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






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






21. Good high temp wear - tools






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






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






24. Produces; harder - stronger and less ductile product






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






26. 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






27. 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






28. 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.






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






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






31. Resulting from exposure to damp environments and liquids.






32. Vertical






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






34. 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






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






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






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






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






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






40. Area parallel to force






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






42. Good toughness and fatigue. high strength structures






43. Load/effort






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






45. Hard - strong






46. Difference/original






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






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






49. Ma/vr






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