RHS marks 40 time 1 hr.1] The following mechanical element is meant for absorbing the kinetic energy or potential energy of a moving system and converts it into heat which is finally dissipated to the surroundingA] Coupling b] brake C] Spring d] flywheel2] In spur gear pair the pinion diameter is 200mm and its speed is If the gear ratio is 4, the gear diameter and its speed are:A .800mm and 375rpm b.50mm and 375 rpm C. 800mm and 6000rpm d.50mm and 6000rpm3] Racing cars useA] Band brake b] block brake C] Disk brake d] band and block brake4] the power is transmitted from driving to driven pulley because of ----------a.inertia of belt b.vibration between belt and pulleyc.frictional resistance between belt and pulley d.none of the above5] Key are subjected to ------------ stressesa. bending b.crushing c. crushing and shearing d.shearing6] The silent chain is also known as:A .inverted tooth chain b. involute tooth chain C. roller chain d. sprocket chain7] 35] In a gear pair, if the gear and pinion are rotating in a same direction, then it must beA .Herringbone gear pair b. helical gear pair C. Internal gear pair d. none of the above8] Camshaft,crankshaft,machine spindle etc.are the example of -------------a transmission shafts b.machine shaftsc.transmission shafts or machine shafts d.none of the above9] ----------- are the holding elements a. nuts b.pins and rivets c.bearings and axles d.none of the above10] The pulley on which v-belt is mounted is called as ---------a.grooved pulley b.crown pulley c.flat pulley d.compound 11] Parallel sunk is of ----------- cross-sectiona.trapezium b.reactangular c.circular d.tringula12] In ---------- drive there is more wear of belt a.open belt b.open belt with idler pulley c.cross belt d. compound belt13] The No. of teeth on pinion =50, Gear ratio=2, pinion speed=1500 rpm The No. ofteeth on pinion and gear speed is:A .25 and 3000rpm b.100 and 750 rpm C.100 and 3000rpm d.25 and 750 rpm14] The following mechanical element absorbs the power:A] coupling b]flywheel C] brake d]none of the above15] Disk brake consist of --------A] shoes b]block C] pad d]none of the above16] The chains are made up of number of rigid links which are hinged together by using-- ------------a.pin joints b.ball joints c.roller joints d.none of the above17] The nature of contact in roller bearing is ------------A] Point contact b] line contact C] surface contact d]area contact18] Disk brake are used in motor cycles due to --------A] High torque transmitting capacity B] High power transmitting capacityC] High mechanical efficiency D] Excellent control 19] In friction clutch, asbestos is used as -----------A] Insulating material b] lubricating material C] Protecting coating d] friction material

20] Single plate clutch is normally-------A] dry type b] wet type C] grease lubricated d] oil lubricated21)The static strength of a material is measured by,a) Yield strength b) ultimate strength c) Fatigue strength d)both (a) & (b)22)The property which is important in forging & press work isa) elasticity b) plasticity c) stiffness d) brittleness23.--------------is considered as a compressive property.a) Malleabilityb) Ductility c) Hardness d) brittleness24--------------- is defined as a resistance to scratch, abrasion or cutting.a) Malleabilityb) Ductility c) Hardness d) brittleness25.The material property essential for spring isa) plasticity b) stiffness c) Hardness d) toughness

26.In ductile material failure takes place due toa) Fracture b) fatigue c) yieldingd) wear27.In brittle materials, the failure takes place due toa) fracture b) fatigue c)yielding d) deformation 28) The property of material which enable it to undergo change in shape & size without rupture, under external load is called a) ductility b) plasticity c) malleability d) toughness29) The property which are important in forging & press work are a) malleability & plasticity b) resilience c)strength & stiffness d) hardness & ductility30) The capacity of material to absorb elastic strain energy is called a) toughness b)resilience c)ductility d) malleability31) Resilience is the capacity of a material to a) absorb energy without fracture. b) absorb kinetic energy. c) absorb elastic strain energy. d) resist deformation. 32) The componants subjected to impact loads are normally designed for a) resilience b) malleability c) toughness d) ductility.33) The units of hardness is a) N/m b) kg/m3 c) N-m d) brinell hardness number34) The following is non-ferrous material. a) steel b) alloy steel c) brass d) Cast Iron35)The percentage of carbon in cast-iron is--------. a) 17 to 20% b) less than 1% c) 1.7 to 4% d) less than 0.5%36) The leaf spring can be made of

a) plain carbon steel b)copper c) cast steel d) Cast Iron37)Bronze is an alloy of

a) copper &zinc b) copper & brass c) copper & lead d) copper & tin38) Liquid can be used as a link a) Always b) sometimes c) Never d) only if density is very high39.Kinematic pair has two link a) Fixed together b) Connected together with constrained relative motion c) Connected together without relative motion d) Connected together with free relative motion40)Grinding wheel is made of

a) steel b)ceramic c) composite d) Cast Iron