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






2. Is the work done by the machine






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






4. Bigger gear






5. Act like levers






6. Energy of motion






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






8. F/A






9. 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.






10. Stored energy






11. Reason that machines are never 100% efficient






12. Mass of the object lifted by the lever






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






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






15. Do the work easier






16. Do not seal the gas (usually air)






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






18. 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.






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






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






21. The rate of motion that an object changes position






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






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






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






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






26. Several simple machines all working together in a system






27. 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)






28. 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






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






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






31. Distance between the fulcrum and the effort force






32. (driven gear) smaller gear






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






34. Distance between the fulcrum and the load






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






36. Pneumatic system in your body






37. Force exerted on the lever to make it move






38. Work unit






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






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






41. Unit of measurement for pressure






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






43. 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.






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






45. F x d






46. 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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47. Is the work needed to use - or operate the machine






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






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






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