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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. Length x Width






2. When two parallel forces equal in magnitude and opposite direction - i.e. steering wheel - turn a know - turn on and off a faucet






3. Force x Distance






4. Force without machine/Force with machine






5. (Force)(Distance)/Seconds






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






7. Rotation may occur






8. 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






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






10. 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






11. What we are not studying






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






13. Energy may enter or leave. No mass enters or leaves the system i.e. Closed water bottle - car engine - human






14. An application of Pascal's Principle (trading distance and force while doing the same amount of work) -Gives a mechanical advantage -The muscles of machines - used to produce very large forces - use a fluid under pressure (gas is low pressure and liq






15. Body in motion (car)






16. Rotation will not occur - but translation might occur






17. Compression-Tension-Shear






18. One that pushes on an object






19. Applied at an angle or parallel to a surface






20. When the sum of all forces and the sum of all moments both equal forces - No movement






21. 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






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






23. When fluid is at rest






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






25. The magnitude of something in a particular direction






26. When the moving fluid is a gas






27. Combustion ignited by spark plug and materials are compressed






28. The branch of science and engineering involving measurement






29. Work/force or vertical distance/sloping distance






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






31. A pull on an object






32. Compression of fuel mix






33. Length x Width x Height






34. Piston travels up and exhaust valve opens. Combustion by product exhaustion






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






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






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






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






39. Mass x acceleration






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






41. When the fluid is in motion






42. 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






43. Tells us how fast work is done - varies with time (more power is needed to do work in less time - and less power is needed to do work in more time) =Fd/s -Units: USA: ft- lb/s SI: watts (J/S)






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






45. 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






46. What we are studying






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

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48. 1. Magnitude: size - a numberi.e. 50 mph 2. Direction: angle i.e. N -E -W -S






49. Describes how applied forces bring a body into motion






50. Length / Time







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Can you answer 50 questions in 15 minutes?


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