Test your basic knowledge |

Mechanical Engineering

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 quantity that has both magnitude and direction when placed within a coordinate system -Forces and Velocity i.e. driving 50 miles to the northeast






2. The perpendicular distance from the pivot point to the point of application of the force (d) - M=Fd -Clockwise=Negative moment -Counterclockwise=Positive moment






3. Intake of fuel and air mix






4. Allows comparison between different measuring systems and units - Necessary to market internationally






5. A fluid power system uses hydraulics and a fluid under pressure to create a greater force than is applied






6. Force and mass are proportional to each other (F=ma) -If F increases - so does acceleration -Force causes acceleration - More force means more acceleration - same mass - More mass means less acceleration - same force


7. Describes a physical property of anything - What we are measuring






8. What we are not studying






9. Length / Time






10. Length x Width x Height






11. The branch of science and engineering involving measurement






12. Result of gravity acting on mass -The greater the mass - the greater the weight -Is a force -Units: lbs - N






13. Exhaust






14. Compression-Tension-Shear






15. When the fluid is in motion






16. Exhaust of combustion products






17. Derived from - or composed of - base dimensions i.e. Area (length x width) - Weight (mass x acceleration) - velocity (length/time)






18. Result of a force moving an object against a resistance through some distance in a desired direction -Work transfers energy -Work is a measure of what is done and not the effort applied - Done by lifting - pushing - rotating - or sliding -W=Fd -F=Amo






19. Can be reduced by decreasing the weight or force or increasing the area i.e. airbag






20. The standard system of units that uses base 10 and used in the rest of the world. US does not use - but Great Britain does - Base Units: mass - kilograms (kg) - length- meters (m) - and time-Seconds (S) - Force is a derived unit measured in newtons (






21. Work/force or vertical distance/sloping distance






22. Intake of fuel and air mixture - compression of mixture by piston






23. Rotation may occur






24. What we are studying






25. Air is compressed - work is done on the system






26. Static - Dynamic






27. Energy may enter or leave. Mass can enter or leave the system i.e. open water bottle - molecule - hydraulic cylinder - human






28. Applied at an angle or parallel to a surface






29. If a force causes rotations -Vector- Machines can have more than one torque-Units: foot- pound and newton - meter - i.e. engines - airplanes - propeller






30. Three- dimensional property measured in units of length times length times length =length x width x height






31. A device that uses energy to do work to accomplish some desired activity - They do not produce energy - but they do transmit and transform energy - Machines can transmit a force - control its motion - and change its direction - a system of components






32. Mechanics is an application of math that describes how forces affect a body






33. Can be applied:-By direct contact: push - pull - twist -At a distance: gravity - magnetism Can change: speed - direction - shape - units of force






34. The force simple machines use to do work on a single load or against a single force






35. Force/Area






36. Often a free body has _______ acting on it






37. Fuel is injected and combusts due to temperature of compressed air






38. When the moving fluid is a gas






39. Piston travels down and intake valve is opened. Intake of fuel and air into chamber






40. Dimensions and units






41. Mass can neither by created nor destroyed - only transformed






42. ...






43. Psi - newtons - pascals






44. One that pushes on an object






45. A^2+b^2=c^2 - used to calculate vectors






46. For every action there is an equal and opposite reaction -Force -F=mg -Earth exerts a force on all of us


47. An indication of kinetic energy of mass at the molecular level






48. A^2+b^2=c^2






49. ICE generates electricity for electric battery -Electric motor turns wheels






50. A flat - sloping surface -The only simple machine that does not move -The force is applied to the ramp - since this is the direction the load weight is moved -Sloping side is longer than vertical side -Less force is required to accomplish the same am