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400 Important Manufacturing And Production Technology MCQ Question and Answer | PDF Free Download
1.In the relation VTn = C, the value of n for ceramic tools is
- A0.1 to 0.2
- B0.20 to 0.25
- C0.25 to 0.40
- D0.40 to 0.55
2.In the relation VTn = C, the value of n for carbide tools is
- A0.1 to 0.2
- B0.20 to 0.25
- C0.25 to 0.40
- D0.40 to 0.55
3.The binding material used in cemented carbide tools is
- ATungsten
- BChromium
- CSilicon
- DCobalt
4.A 15 mm drilling machine means that it can drill a hole
- AOf maximum diameter 15 mm
- BIn 15 mm thick plates
- CAll the above
- DNone of the above
5.The material which on machining produces chips with built up edge is
- ABrittle material
- BTough material
- CHard material
- DDuctile material
6.The operation of making a cone-shaped enlargement of the end of a hole is known as
- ACounter-sinking
- BCounter-boring
- CTrepanning
- DSpot facing
7.The operation of smoothing and squaring the surface around a hole is known as
- ACounter-sinking
- BCounter-boring
- CTrepanning
- DSpot facing
8.The snag grinding is done
- ATo produce good surface finish and high degree of accuracy
- BTo remove considerable amount of metal without regard to accuracy of the finished surface
- CTo grind exterior cylindrical surfaces
- DAny one of the above
9.In metal machining, the work-tool contact zone is a zone where heat is generated due to
- APlastic deformation of metal
- BBurnishing friction
- CFriction between the moving chip and the tool face
- DNone of the above
10.A diamond locating pin is used in jigs and fixtures because
- ADiamond is very hard and wear resistant
- BIt occupies very little space
- CIt helps in assembly with tolerance on centre distance
- DIt has a long life
11.The size of abrasive grain required in a grinding wheel depends upon the
- AAmount of material to be removed
- BHardness of material being ground
- CFinish desired
- DAll of these
12.The cutting speed of a drill depends upon the
- AMaterial of drill
- BType of material to be drilled
- CQuality of surface finish desired
- DAll of these
13.The specific cutting energy used for establishing the machinability of the metal depends upon its
- ACoefficient of friction
- BMicro-structure
- CWork hardening characteristics
- DAll of these
14.For machining a mild steel workpiece by a high speed steel tool, the average cutting speed is
- A5 m/min
- B10 m/min
- C15 m/min
- D30 m/min
15.For machining a cast iron workpiece by a high speed steel tool, the average cutting speed is
- A10 m/min
- B15 m/min
- C22 m/min
- D30 m/min
16.Trepanning is performed for
- AFinishing a drilled hole
- BProducing a large hole without drilling
- CTruing a hole for alignment
- DEnlarging a drilled hole
17.In machining metal, cutting force at the cutting edge is measured by a
- AWattmeter
- BDynamometer
- CHydrometer
- DPyrometer
18.NC contouring is an example of
- AContinuous path positioning
- BPoint-to-point positioning
- CAbsolute positioning
- DIncremental positioning
19.Drilling is an example of
- AOrthogonal cutting
- BOblique cutting
- CSimple cutting
- DUniform cutting
20.Gear burnishing is a process for
- ASurface finishing
- BUndercut gears
- CCycloidal gears
- DRemoving residual stresses from teeth roots