Test your basic knowledge |

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. Distance between the fulcrum and the load






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






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






4. Energy of motion






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






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






7. (driven gear) smaller gear






8. A fixed point






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






10. F/A






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






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






13. 1st class - 2nd class - 3rd class






14. Do the work faster






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. Act like levers






18. Several simple machines all working together in a system






19. F x d






20. Unit of measurement for pressure






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






22. Force exerted on the lever to make it move






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






24. Reason that machines are never 100% efficient






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






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






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






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






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






31. Work unit






32. Is the work done by the machine






33. Hydraulic system in your body






34. 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.






35. 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






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






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






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






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






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






42. Pneumatic system in your body






43. Bigger gear






44. Mass of the object lifted by the lever






45. 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






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






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






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






49. Science of designing machines to suit people






50. The rate of motion that an object changes position