16/12/2019 Simple Machines (STUDY BY TOPICS JUNIOR CLASS) 0Comments by Gate Academy Welcome to your Simple Machines (STUDY BY TOPICS JUNIOR CLASS) NAME EMAIL PHONE NUMBER 1. Pliers is an example of what class of leversecond class leverfifth class leverfirst class leverfourth class lever2. A _________________is used to hold things together. This is described as an incline plane wrapped around a cylinder.3. 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.PulleyScrewIncline planeWheel and Axle4. The drilling machine was primarily designed to originate a _____none of the mentionedcylindrical surfaceflat surfacetaper surface5. The bottom of a light bulb is what type of simple machine?WedgeComplex machinePulleyScrew6. Tapping attachment is included in_______ method of tool holding devices.by chucksby directly fitting in the spindlenone of the mentionedby a sleeve7. For drilling operation, the drill rotates with_____ pressure if job is held on earth45 degree inclined to both planesdownwardupwardnone of the mentioned8. Leverage is the ratio of load arm to effort arm.TrueFalse9. When the load is between the fulcrum and the effort it is second class leverfourth class leverfifth class leverfirst class lever10. 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.10000mm10mm100mm1000m11. Which of the following are not included under planar mechanisms?Slide crank mechanismPlate cam and followerHooke’s universal jointPlane four bar linkage12. A bottle opener belongs to which class of the levers.Fulcrum in the middleNone of the mentionedResistance in the middleEffort in the middle13. There are how many classes of levers 324114. How does a ramp make work easier?You can ride your skateboard up it, rather than walking up the stairsNone of theseIt helps hold a door open so I don't have to.It spreads the work out over a longer distance.15. A right angled bell-crank is designed to raise a load of 5kN at short arm whose length is 100mm. Also longer arm is of length 500mm. If permissible bearing pressure on pin is 10N/mm² and diameter of the 20mm, find the length of the pin.20mm35.5mm25.5mm30mm16. The pivot point of a lever is called a ____________________. 17. Which mechanism is shown in the given diagram?spatialsphericalplanarflexure18. Which of the following method is not used for holding tool?by a sleevenone of the mentionedby a socketby chucks19. The critical value at which crack extension occurs is calledToughnessStress Intensity FactorNone of the mentionedFracture Toughness20. . Of a machine is the ratio of distance moved by the effort to distance moved by loadvelocity ratiomechanical advantageefficiency21 out of 20Time is Up! Time's up
