Welcome to your Simple Machines (STUDY BY TOPICS JUNIOR CLASS) NAME EMAIL PHONE NUMBER 1. Which of the following are not included under planar mechanisms? Hooke’s universal joint Plate cam and follower Plane four bar linkage Slide crank mechanism2. Which of the following method is not used for holding tool? by a socket none of the mentioned by a sleeve by chucks3. In a mechanical system, if the bodies move in a way such that the trajectories of points in the system lie on concentric sphere, then the mechanism is called spatial mechanism spherical mechanism planar mechanism flexure mechanism4. The formula for the mechanical advantage of an inclined plane is: Height divided by distance Output arm divided by input arm Distance divided by height Input arm divided by the output arm5. We can’t perform grinding operation in a drilling machine. False True6. There are how many classes of levers 2 4 3 17. The following can be used to raise a load except axle wheel screw effort8. A linkage containing a screw pair is an example of Spherical mechanism Spatial mechanism Flexure mechanism Planar mechanism9. Fulcrum can be located at one end of the lever. True False10. Which of the following device is not used for holding the work in a drilling machine? none of the mentioned both step block and drill jigs step block drill jigs11. When the load is between the fulcrum and the effort it is first class lever fourth class lever fifth class lever second class lever12. Coplanar motion is the motion transformation of any planar mechanism. True False13. 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. 100mm 1000m 10000mm 10mm14. 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. Incline plane Screw Wedge Simple Machine15. Nut crackers are examples of what class of lever fifth class lever first class lever fourth class lever second class lever16. The pivot point of a lever is called a ____________________.17. Tapping attachment is included in_______ method of tool holding devices. none of the mentioned by a sleeve by directly fitting in the spindle by chucks18. Which mechanism is shown in the given diagram? flexure spatial spherical planar19. Mechanical advantage is the ratio of effort to load. False True20. How many classes of levers are there? 3 4 5 221 out of 20Time is Up!