Welcome to your Simple Machines (STUDY BY TOPICS JUNIOR CLASS) NAME EMAIL PHONE NUMBER 1. A right angled bell-crank is designed to raise a load of 5kN at short arm whose length is 100mm. Longer arm is of length 500mm. Calculate the reaction or force acting on the fulcrum.5.86.85.16.12. 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.10mm1000m100mm10000mm3. If the relative motions of the rigid bodies are in one plane or in parallel planes, then the mechanism is calledplanar mechanismspatial mechanismspherical mechanismflexure mechanism4. The formula for the mechanical advantage of an inclined plane is:Height divided by distanceInput arm divided by the output armOutput arm divided by input armDistance divided by height5. Which of the following operations can’t be performed on a drilling machine?lappingtappingreamingnone of the mentioned6. When the load is between the fulcrum and the effort it is fifth class leverfourth class leversecond class leverfirst class lever7. Which of the following device is not used for holding the work in a drilling machine?drill jigsboth step block and drill jigsstep blocknone of the mentioned8. What 2 simple machines make up a pair of scissors?Screw and incline planePulley and wheel and axleNone of the aboveWedge and lever9. 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.ScrewIncline planePulleyWheel and Axle10. If the link next to the shortest link is fixed, what type of mechanism is obtained?Linkage is not planarDouble rocker mechanismDouble crank mechanismCrank rocker mechanism11. . Of a machine is the ratio of distance moved by the effort to distance moved by loadmechanical advantageefficiencyvelocity ratio12. The bottom of a light bulb is what type of simple machine?Complex machineWedgePulleyScrew13. What simple machine combines with itself to make a wedge?GearInclined planeWheel and axleLever14. Tapping attachment is included in_______ method of tool holding devices.none of the mentionedby directly fitting in the spindleby a sleeveby chucks15. Which mechanism is shown in the given diagram?planarspatialsphericalflexure16. All of these are examples of inclined planes except:HatchetStaircaseWheelRamp17. What is the definition of a screw?An inclined plane wrapped around a cylinder.A flat sloped surface.Something that holds wood together.A screw is not a simple machine.18. Nut crackers are examples of what class of leversecond class leverfifth class leverfourth class leverfirst class lever19. The following can be used to raise a load excepteffortwheelaxlescrew20. A _________________is used to hold things together. This is described as an incline plane wrapped around a cylinder.21 out of 20Time is Up! Time's up
