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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 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






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






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






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






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






6. 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






7. Rubbers






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






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






10. Good high temp wear - tools






11. Resulting from exposure to damp environments and liquids.






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






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






14. 1GHZ






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






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






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






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






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






20. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear






21. 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






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






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






24. 1/4 of the wavelength (higher better)






25. Load/effort






26. 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






27. High pressure

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






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






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






31. 100khz






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






33. 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.






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






35. Usually used together - strengthening and toughness






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






37. 10MHZ






38. 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






39. 100GHZ+






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






41. Elongation of grain flow in direction of rolling






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






43. MA=VR






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






45. Vertical






46. When upper die is dropped on bottom






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






48. Ma/vr






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






50. Hard - brittle