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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. These have weaker secondary bonds which allow the stretching






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






3. 1%<X<2% carbon. more cementite - used for files






4. Better properties that would come from machining






5. 10MHZ






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






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






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






9. 100khz






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






11. When upper die is dropped on bottom






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






13. Mass X gravity X height






14. Ma/vr






15. 1/2Xmass X velocity X velocity






16. Load/effort






17. 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






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






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






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






21. Area parallel to force






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






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






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






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






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






27. Soft - ductile






28. Produces; harder - stronger and less ductile product






29. 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






30. AC to DC






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






32. Usually used together - strengthening and toughness






33. Area load piston/area of effort piston






34. Hard - brittle






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






36. 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






37. Horizontal






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






39. Rubbers






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






41. Elongation of grain flow in direction of rolling






42. 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






43. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures






44. Difference/original






45. 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






46. 1/4 of the wavelength (higher better)






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






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






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






50. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles