Welcome to your Simple Machines (STUDY BY TOPICS JUNIOR CLASS) NAME EMAIL PHONE NUMBER 1. . Of a machine is the ratio of distance moved by the effort to distance moved by loadefficiencyvelocity ratiomechanical advantage2. Which mechanism is shown in the given diagram?planarspatialflexurespherical3. Which of the following method is not used for holding tool?by chucksnone of the mentionedby a sleeveby a socket4. Tapping attachment is included in_______ method of tool holding devices.by chucksnone of the mentionedby directly fitting in the spindleby a sleeve5. Hooke’s universal joint is an example of spatial mechanism.FalseTrue6. What is the definition of a screw?A screw is not a simple machine.Something that holds wood together.An inclined plane wrapped around a cylinder.A flat sloped surface.7. There are how many classes of levers 13428. These two simple machines make a screw:Wheel and axle and inclined planeLever and wedgePulley and leverInclined plane and wedge9. All of these are examples of inclined planes except:WheelRampHatchetStaircase10. If the relative motions of the rigid bodies are in one plane or in parallel planes, then the mechanism is calledspherical mechanismflexure mechanismplanar mechanismspatial mechanism11. In drilling operation, work should be held by hand.TrueFalse12. How many classes of levers are there?345213. A heavy object could be rolled up this simple machine, instead of lifting it straight up. Using this simple machine can save effort, although the object must usually cover more distance if this simple machine is used.ScrewIncline planeSimple MachineWedge14. A rope, a wheel with a groove in it and a weight make up this simple machine. You can pull down on the rope to lift the weight.ScrewWheel and AxleIncline planePulley15. A bottle opener belongs to which class of the levers.Resistance in the middleEffort in the middleNone of the mentionedFulcrum in the middle16. A baseball bat is an example of this class of lever:Fourth-classFirst-classThird-classSecond-class17. The distance between fulcrum and dead weights is 100mm. Dead weights are of 2945.2N. An effort of 294.52N acts on the other hand. Find the distance between the fulcrum and other end of the lever.100mm10mm10000mm1000m18. The pivot point of a lever is called a ____________________.19. A linkage containing a screw pair is an example ofPlanar mechanismSpatial mechanismFlexure mechanismSpherical mechanism20. What simple machine combines with itself to make a wedge?Inclined planeWheel and axleLeverGear21 out of 20Time is Up!