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






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






3. Pneumatic system in your body






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






5. Distance between the fulcrum and the load






6. Do the work easier






7. Consists of a small cylinder that has a crank or handle. The axle of the winch acts like the fulcrum - the handle is the effort arm






8. Mass of the object lifted by the lever






9. Work unit






10. The relationship between the speed of rotations of a smaller gear and a larger gear - can be calculated by dividing the number of driver gear teeth by the number of follower gear teeth.






11. Is the work needed to use - or operate the machine






12. Do the work faster






13. Science of designing machines to suit people






14. Bigger gear






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






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






17. Energy of motion






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






19. Several simple machines all working together in a system






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






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






22. 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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23. Load Force (FL)/Effort Force (FE)






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






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






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






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






28. 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)






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






30. The rate of motion that an object changes position






31. A fixed point






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






33. A rigid bar or plank that can rotate around a fixed point






34. Distance between the fulcrum and the effort force






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






36. 1st class - 2nd class - 3rd class






37. Used to control the flow of a fluid. It is a moveable part that controls the flow by opening or closing






38. Stored energy






39. Energy is transferred from one place to another - and no energy is changed or converted.






40. Is the work done by the machine






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






42. Force exerted on the lever to make it move






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






44. Act like levers






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






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






47. Reason that machines are never 100% efficient






48. Hydraulic system in your body






49. 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.






50. 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







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Can you answer 50 questions in 15 minutes?


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