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






2. Rubbers






3. Soft - ductile






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






5. Better properties that would come from machining






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






7. Soaked cast iron at 870c for long time then cooled slow






8. 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






9. High pressure

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10. Produces; harder - stronger and less ductile product






11. Low pressure

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






13. Mass X gravity X height






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






15. 1/2Xmass X velocity X velocity






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






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






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






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






20. 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






21. AC to DC






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






23. Good wear - case hardening. ball bearings






24. Usually used together - strengthening and toughness






25. Elongation of grain flow in direction of rolling






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






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






28. Load/effort






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






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






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






32. Ma/vr






33. Vertical






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






35. Good toughness and fatigue. high strength structures






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






37. 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






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






39. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles






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






41. Area load piston/area of effort piston






42. 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.






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






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






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






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






47. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures






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






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






50. 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







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Can you answer 50 questions in 15 minutes?


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