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. 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)






2. A fixed point






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






4. Act like levers






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






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






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


8. Force exerted on the lever to make it move






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






10. F/A






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






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






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






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






15. Do not seal the gas (usually air)






16. Do the work faster






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






18. Hydraulic system in your body






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






20. 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






21. Unit of measurement for pressure






22. 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.






23. Work unit






24. Mass of the object lifted by the lever






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






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






28. 1st class - 2nd class - 3rd class






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






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






31. (driven gear) smaller gear






32. Is the work done by the machine






33. Science of designing machines to suit people






34. 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.






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






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






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






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






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






40. Reason that machines are never 100% efficient






41. Do the work easier






42. Energy of motion






43. Stored energy






44. Distance between the fulcrum and the load






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






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






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






48. The rate of motion that an object changes position






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






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