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






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






3. What we are studying






4. Compression of fuel mix






5. Combine two or more power sources - locomotives - buses (diesel- electric) -Submarines (Nuclear- electric) -Components:gas engine - fuel tank - electric motor - generator - batteries - transmission -2 motors: Internal Combustion Engine and Electric E






6. Weight/Time






7. Movement along a line (reciprocal or linear motion) -Units: feet and meters






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. A pull on an object






10. Work/force or vertical distance/sloping distance






11. Can be applied at a time on an object






12. Body in motion (car)






13. Compression-Tension-Shear






14. Dimensions and units






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






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






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






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






19. Often a free body has _______ acting on it






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






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






22. Force without machine/Force with machine






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






24. 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






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

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






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






28. One that pushes on an object






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






30. Same pressure - work - volume - Different forces and distances






31. 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






32. 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






33. 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 (






34. Rotation will not occur - but translation might occur






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






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






37. Used to measure or quantify -US Common: Absolute and Gravitational -SI: absolute






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






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






40. Ignition - power stroke






41. ...






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






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






44. Describes how applied forces bring a body into motion






45. Every object continues in motion in a straight line unless acted upon by some force -Every object at rest continues at rest unless acted upon by a force -So forces cause a change in an object's state of motion

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






47. Combustion ignited by spark plug and materials are compressed






48. Exhaust






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






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