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






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






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






4. 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






5. These have weaker secondary bonds which allow the stretching






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






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






8. 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.






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






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






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






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






13. High pressure

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14. 100khz






15. Ma/vr x 100/1






16. 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






17. Ma/vr






18. Mass X gravity X height






19. Vertical






20. MA=VR






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






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






23. Good wear - case hardening. ball bearings






24. 1GHZ






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






26. Hard - brittle






27. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear






28. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures






29. Horizontal






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






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






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






33. 1%<X<2% carbon. more cementite - used for files






34. Difference/original






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






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






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






38. Resulting from exposure to damp environments and liquids.






39. Produces; harder - stronger and less ductile product






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






41. Controlled cooling after heating metal to attain a degree of hardness. removes internal stresses






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






43. Usually used together - strengthening and toughness






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






45. 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






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






47. 10MHZ






48. Area load piston/area of effort piston






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






50. AC to DC