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Engineering Studies

Subject : engineering
  • Answer 50 questions in 15 minutes.
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  • Match each statement with the correct term.
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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. Area parallel to force

2. Vertical

3. 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

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

5. MA=VR

6. Rubbers

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

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

9. 10MHZ

10. Horizontal

11. 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

12. Better properties that would come from machining

13. 1GHZ

14. 100khz

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

16. 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

17. Hard - brittle

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

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

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

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

22. 1/4 of the wavelength (higher better)

23. These have weaker secondary bonds which allow the stretching

24. High pressure

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

26. Low pressure

27. 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

28. Mass X gravity X height

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

30. 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

31. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear

32. When upper die is dropped on bottom

33. Produces; harder - stronger and less ductile product

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

35. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles

36. 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

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

38. 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

39. Good toughness and fatigue. high strength structures

40. 100GHZ+

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

42. Good high temp wear - tools

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

44. Ma/vr x 100/1

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

46. Soft - ductile

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

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

49. Hard - strong

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