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. Air is drawn in






2. Rotation may occur






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






4. What we are not studying






5. Combustion of fuel mixture ignited by spark plug






6. Compression of fuel mix






7. A pull on an object






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






9. In a hydraulic with an incompressible fluid - the total pressure at any point in the system is the same - liquid

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






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






12. When fluid is at rest






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






14. Liquid or gas






15. Length x Width x Height






16. One that pushes on an object






17. Force x Distance






18. Rotation will not occur - but translation might occur






19. External Combustion engine -Only used in factories and plants (not used in cars)






20. The amount of atoms and molecules in something - Matter is energy that has become solid -An object gains mass when it gains more energy and vice a versa -Units: SI- kgs and USA: Slugs - lbs






21. When the fluid is in motion






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






23. (Force)(Distance)/Seconds






24. Exhaust






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






26. Work/force or vertical distance/sloping distance






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






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






29. Combustion ignited by spark plug and materials are compressed






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






31. Ignition - power stroke






32. Two stroke- Four Stroke- Diesel-Rotary -Hybrid






33. The magnitude of something in a particular direction






34. When the work done by the effort just equals the work done by the load - ______ of the machine will occur






35. 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






36. 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 (






37. 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

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38. Weight/Time






39. The branch of science and engineering involving measurement






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






41. 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)






42. Varies by location (on earth) - distance (from earth) - and mass (of planet)






43. When a simple machine increases a force it is at the expense of a ____ in the distance the load is moved






44. When the moving fluid is a gas






45. Length x Width






46. 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






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






48. A combination of components






49. 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






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