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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. Static - Dynamic






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






3. Used in cars -2 rotations of crankshaft -4 strokes (down - up - down - up) of piston - i.e. cars - trucks - planes - buses - motorcycles - submarine -1% of gas actually moves people






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






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






6. Describes how applied forces bring a body into rest or equilibrium






7. When fluid is at rest






8. Both engines drive wheels -ICE used for cruising -Electric motor assists with low speed for acceleration and hill climbing






9. 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






10. Rotation will not occur - but translation might occur






11. 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






12. Air is drawn in






13. A flat - two dimensional property -Units of length multiplied by length describe area -A=length x width






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






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






16. A small piece that makes up a larger whole. Each component is there for a specific job - but the sum of components






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






18. Work/force or vertical distance/sloping distance






19. Compression-Tension-Shear






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






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






22. Length x Width x Height






23. Force without machine/Force with machine






24. In a right triangle - the sum of the squares of the sides equals the square of the hypotenous






25. Mass x acceleration






26. ...






27. Force x Distance






28. Often a free body has _______ acting on it






29. More compact (size of beer keg) - No valves -Benefits: fewer parts - lower engine weight Problems: seal - lower inertia forces -1 rotar=3 to 4 pistons






30. A system adopted from an old British system of units in the 13th century -Engineering system -Units: length- foot (ft) - time- second (s) - force-(lbs) - Mass is a derived unit called a slug -Political/Economic choice -Awkward






31. The branch of science and engineering involving measurement






32. A pull on an object






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






34. 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 (






35. Psi - newtons - pascals






36. Force/Area






37. One that pushes on an object






38. Intake of fuel and air mix






39. The magnitude of something in a particular direction






40. Dimensions and units






41. 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






42. 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






43. Brake pedal and linkage - Master Cylinder - Wheel cylinders (4) - Hydraulic lines - Hydraulic fluid - Mechanical advantage is provided by the foot pedal to the booster (level) - A greater force is applied on the wheel cylinders than on the brake peda






44. Modern Technology- More efficient-Better Cooling-Easier to service- longer life - lither weight- More expensive






45. When the work done by the effort exceeds the work done by the load - the load...






46. Incompressible (volume doesnt change) Transmit force evenly - Lubricates - Trap contaminants - Some based on vegetable oils - Biodegradable - Aircraft fluids noncombustible (thins as temperature rises)






47. Applied at an angle or parallel to a surface






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






49. Are independent of other dimensions - They are limited in number - length - mass - time - temperature - force






50. A combination of components