1. In milling process, the feed direction and direction of rotation of cutter are in .. direction.1. up, opposite2. up, same3. down, opposite4. down, reverse(Ans: a)2. In shaper machine tool, workpiece .. and tool 1. reciprocates, rotates2. remains stationary, rotates3. remain stationary, reciprocates4. rotates, reciprocates(Ans: c)3. In oxidizing flame, the inner core attains a temperature of .. C.1. 21002. 28003. 31504. 3500(Ans: d)4. Arc blow occurs in . Welding.1. AC2. DC3. Gas4. Resistance(Ans: b)5. During welding, when the weld reduces the cross sectional thickness of the base metals it is called ..1. lack of penetration2. spattering3. undercutting4. blow hole(Ans: c)6. Which of the following is not a function of flux that is added during casting of cast iron?1. absorb impurities2. replenishes material loss3. protects casting from oxidation4. forms slag(Ans: c)7. The connecting rods of IC engines are manufactured using the process of 1. extrusion2. drop forging3. rolling4. spinning(Ans: b)8. Plastic bottles are manufactured using the process of1. blow moulding2. injection moulding3. atomizing4. die casting(Ans: a)9. The portion of the cutting part enclosed between the face and the flank is called ..1. wedge2. shank3. base4. rake face(Ans: a)10. Only two perpendicular components of cutting force act on the tool in case of . cutting.1. oblique2. orthogonal3. 3D4. Inclined(Ans: b)11. Operation of bending a partially cut hole on one side is called .1. nibbling2. slitting3. lancing4. spiral(Ans: c)12. On increasing the value of rake angle, the strength of tool 1. increases2. decreases3. remains constant4. is unpredictable(Ans: b)13. Angle between portion of side flank immediately below major (side) cutting edge and a line perpendicular to the base of the tool is called angle.1. end relief2. side rake3. side relief4. side clearance(Ans: c)14. Which of the following is not a specification of lathe machine tool?1. chuck size2. swing over diameter3. distance between centres4. bed length(Ans: a)

The tool made of cemented carbide wear out faster at 1.medium speeds 2.slow speeds 3.fast speeds 4.very fast speedsWhen the cutting edge of the tool is dull, then during machining 1.discontinuous chips are formed 2.continuous chips are formed 3.continuous chips with built-up edge are formed 4.no chips are formedSegmental chips are formed during machining 1.mild steel 2.high carbon steel 3.cast iron 4.high speed steelCast iron during machining produces 1.none of these 2.continuous chips with built-up-edge 3.discontinuous chips 4.continuous chipsIn up milling, the thickness of chip is 1.none of these 2.minimum at the beginning of the cut and maximum at the end of the cut 3.maximum at the beginning of the cut and minimum at the end of the cut 4.uniform throughout the cutIn metal machining, the work-tool contact zone is a zone where heat is generated due to 1.friction between the moving chip and the tool face 2.plastic deformation of metal 3.burnishing friction 4.none of the aboveGlazing in grinding wheels can be decreased by 1.using a softer wheel or by increasing the wheel speed 2.using a harder wheel or by decreasing the wheel speed 3.using a softer wheel or by decreasing the wheel speed 4.using a harder wheel or by increasing the wheel speedTrepanning is an operation of 1.smoothing and squaring the surface around a hole 2.making a cone-shaped enlargement of the end of a hole 3.sizing and finishing a small diameter hole 4.producing a hole by removing metal along the circumference of a hollow cutting toolThe factor responsible for the formation of continuous chips with built up edge is 1.low cutting speed and small rake angle 2.low cutting speed and large rake angle 3.high cutting speed and large rake angle 4.high cutting speed and small rake angleThreading is an operation of 1.sizing and finishing a small diameter hole 2.cutting helical grooves on the external cylindrical surface 3.producing a hole by removing metal along the circumference of a hollow cutting tool 4.smoothing and squaring the surface around a holeIn order to grind soft material 1.any one of these 2.coarse grained grinding wheel is used 3.medium grained grinding wheel is used 4.fine grained grinding wheel is usedThe velocity of tool along the tool face is known as 1.chip velocity 2.shear velocity 3.cutting velocity 4.mean velocityWhich of the following welding process uses non-consumable electrodes? 1.Manual arc welding 2.MIG welding 3.TIG welding 4.Submerged arc weldingIn a hot chamber die casting machine 1.ferrous alloys with low melting temperature are casted 2.non-ferrous alloys with high melting temperature are casted 3.non-ferrous alloys with low melting temperature are casted 4.ferrous alloys with high melting temperature are castedThe temperature at which the new grains are formed in the metal is called 1.upper critical temperature 2.lower critical temperature 3.recrystallisation temperature 4.eutectic temperatureA zinc diffusion process is called 1.anodising 2.sheradising 3.parkerising 4.galvanisingCarburising flame is used to weld 1.brass and bronze 2.hard surfacing materials such as satellite 3.all of these 4.steel, cast iron, copper, aluminium etcCores are used to 1.form internal cavities in the casting 2.improve mould surface 3.all of these 4.form a part of a green sand mouldA neutral flame is obtained by supplying 1.more volume of oxygen and less volume of acetylene 2.equal volumes of oxygen and acetylene 3.more volume of acetylene and less volume of oxygen 4.none of the aboveIn a cold chamber die casting machine 1.melting pot is separate from the machine 2.melting pot is an integral part of the machine 3.melting pot may have any location 4.low temperature and pressure is used

Steel vices are manufactured using which of these processes? (a) sand casting (b) cnc milling (c) presswork (d) die casting

Which of the following manufacturing processes is most appropriate for producing electric motor bodies? (a) casting (b) extrusion (c) forging (d) milling

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