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Mechanical Systems

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. The fluid transfers the pressure from the input piston to the ____________






2. A pair of wheels that have teeth that interlink. When they rotate together - one gear wheel transfers turning motion and force to the other.






3. Distance between the fulcrum and the effort force






4. Load Force (FL)/Effort Force (FE)






5. Stored energy






6. Is the work done by the machine






7. Mass of the object lifted by the lever






8. Hydraulic system in your body






9. The rate of motion that an object changes position






10. Required a large shift in population from rural areas to the cities.






11. Or ramp - makes it easier to move a load higher than it is - but - it has to be moved over a much longer distance.






12. Heated water to make steam and then used to move a piston in a circular motion






13. Heated water to make steam and then used to move a piston. When the piston moved - it caused an attached rod (which was connected to a crankshaft) to move as well - making the engine work.






14. Work done by machine / work done to make the machine operate x100






15. Transferred to kinetic energy in machines in a dam to generate electrical energy






16. Are used to overcome the frictional force of the machine






17. To increase the force on the output piston - the input piston must move through a greater distance






18. The combustion occurs inside the engine. The pistons goes through 4 steps: Intake stroke (taking in the fuel) - compression stroke (compressing the fuel- air mixture) - power stroke (the fuel- air mixture is ignited) - exhaust stroke (waste products






19. Force of the small piston/area of the small piston = Force of the large piston/Area of the large piston






20. Do the work faster






21. Force exerted on the lever to make it move






22. A measure of the amount of force applied to a given area






23. A combination of two wheels of different diameters that turn together - a lever that rotates in a circle around a center point or fulcrum.






24. Use the force of a liquid in a confined space - apply two essential characteristic of fluids - their incompressibility and their ability to transmit pressure






25. Do not seal the gas (usually air)






26. Science of designing machines to suit people






27. 1st class - 2nd class - 3rd class






28. Bigger gear






29. (driven gear) smaller gear






30. Within a machine are groups of parts that perform specific functions - such as braking or steering






31. Used to apply force to the fluid - which creates pressure in the fluid






32. Is done when a force acts on an object to make that object move - a transfer of energy






33. Energy of motion






34. The ratio of the output to the input of any system - a comparison of the useful work provided by a machine or a system with - the work supplied to the machine or system






35. Pressure applied to an enclosed fluid is transmitted undiminished in all directions throughout the fluid and perpendicular to the walls of the container.

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36. The comparison of the force produced by a machine to the force applied to the machine. (the size of the load vs the size of the force needed to move the load)






37. When the driving and the driven gears are the same size






38. F x d






39. Consists of a wire - rope - or cable moving on a grooved wheel. One or more combinations of wheels and ropes can be fixed in place or moveable - help you lift larger loads.






40. The production of large quantities of a standardized article (often using assembly line techniques)






41. Distance between the fulcrum and the load






42. A very complex combination of pulleys - including fixed and movable is called






43. Act like levers






44. Work unit






45. A group of parts that work together to perform a function






46. A small gear driving a larger gear increases torque and reduces speed in the driven gear






47. A large gear driving a smaller gear decreases torque and increases speed in the driven gear






48. A fixed point






49. Do the work easier






50. Pneumatic system in your body







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Can you answer 50 questions in 15 minutes?


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