Objective question paper on Metal Cutting for mechanical engineering student

OBJECTIVES ON TEST PAPER FOR METAL CUTTING

1)The tool having one cutting edge is known as………….
a)Single point cutting tool
b)Multi point cutting tool

2)When cutting face of tool is 90° to the line of action of tool then it is known as………….
a)Oblique cutting
b)Orthogonal cutting

3)If cutting face of the tool is at less than 90° to the line of action of tool then it is known as…………….
a)Orthogonal cutting
b)Oblique cutting

4)Which tool has longer life?───
a)Orthogonal tool
b)Oblique tool

5)In Orthogonal cutting chips are in form of…………..
a)Discontinuous
b)Coils in tight, flat spiral
c)Long curl

6)Metal removal rate of………… is more
a)Orthogonal tool
b)Oblique tool

7)In oblique cutting chips are in form of…………..
a)Long curl
b)Flat spiral
c)Discontinuous
d)Short & thick

8)The outward flow of metal causes chips to be…………… when removed from parent material.
a)Thinner
b)Thicker

9)Torque in milling is determined by formula……………
a)T=Pz.d2
b)T=pz.d4
c)T=Pz.d

10)………………….are most commonly used for measuring force in metal cutting.
a)Mechanical & strain gauge dynamometer
b)Calorimeter
c)Wattmeter

11)Surface which face the workpiece is known as…………….. Of the tool.
a)Flank
b)Heel
c)Base

12)Discontinuous / segmental chips are obtained in the cutting of …………………materials
a)Brittle materials
b)Ductile materials
c)Soft materials

13)Lowest portion of side cutting edges is …………………….of single point cutting tool.
a)Heel
b)Flank
c)Rake

14)Distance the tool advances into workpiece each time the tool point passes a
certain position in it's travel over the surface his the……………….of the cutting tool.
a)Feed
b)Cutting speed
c)Depth of cut

15)In single point tool feed is expressed in ………….
a)Millimeter per revolution
b)Centimeter per revolution
c)Millimeter

16)Cutting speed is expressed in………………….
a)Meter per second
b)Meter per minute
c)Millimeter per minute

17)To reduce the wear of tool on harder material it should be machined at…………………
a)Lower cutting speed & smaller feed
b)Lower cutting speed & higher feed
c)Higher cutting speed & lower feed
18)If chip thickness increases tool wear is ………….
a)Less
b)Moderate
c)More rapid

19)…………………. Gives best finish.
a)Lower cutting speed & higher feed
b)Higher cutting speed & higher feed
c)Higher cutting speed & fine feed

20)Work done in metal cutting is depends on……………
a)Cutting force & cutting speed
b)Cutting speed & heat generated
c)Depth of cut & cutting speed

21)The process of improving the cutting action of grinding wheel is called…………
a)Truing
b)Dressing
c)Facing
d)Clearing

22)Buffing wheels are made of……………..
a)Softer metals
b)Cotton fabric
c)Carbon
d)Graphite

23)In a plain milling machine table can be moved ……………..
a)Longitudinally
b)Crosswise
c)Vertically
d)All of these

24)The plain milling machine is more rigid & heavier in construction than a universal milling m/c of same size……….
a)Correct
b)Incorrect

25)Carbon tool steels have low heat & wear resistance.
a)Correct
b)Incorrect

26)Satellite preserve hardness upto a temperature of
a)350°c
b)500°c
c)900°c
d)1100°c

27)Ceramics tools are fixed to the tool body by …………………….
a)Soldering
b)brazing
c)welding
d)clamping

28)Ceramics tools has greater tool life tan carbide tool.
a)Correct
b)Incorrect

29)The tool made of cemented carbide wear out faster at ……………..
a)Slow speeds
b)Fast speeds
c)medium speeds
d)very fast speeds

30)As the cutting speed increases tool cutting forces…………….
a)Remains constant
b)Increases
c)Decreases

31)The trade name of non ferrous cast alloy composed of cobalt, chromium & tungsten is called…………….
a)Ceramic
b)Satellite
c)Diamond
d)Cemented carbide

32)Cutting fluids are used to ………………
a)Cool the tool
b)Improve surface finish
c)Cool the workpiece
d)All of these

33)Cutting fluids mostly used for machining steel is…….
a)Water
b)Soluble oil
c)Dry
d)Heavy oil

34)In machining cast iron no cutting fluid is required.
a)Correct
b)Incorrect

35)The cutting fluid mostly used for machining alloy steel is………
a)Water
b)Soluble oil
c)Dry
d)Sulphurised mineral oil

36)A numerical method of identification of tool is known as tool signature.
a)Correct
b)Incorrect

37)Tool signature consists of……….elements
a)2
b)4
c)5
d)7

38)The factor which affects the tool life is ………………
a)Tool geometry
b)Cutting speed
c)Feed rate
d)All of these

39)Larger end cutting edge angle ………. Tool life.
a)Increases
b)Decreases
c)No effect

40)The tool life……………as the cutting speed increases.
a)Increases
b)Decreases

41)If the grain size is…………………..tool life is better.
a)Smaller
b)Larger

42)Tool life is affected by…………..
a)Depth of cut
b)Cutting speed
c)Feed
d)All of these

43)The tool life in case of continuous cutting is much better than intermittent cutting
a)Correct
b)Incorrect

44)The tool life is …… cutting speed.
a)Independent of
b)Dependent upon

45)Size of lathe is specified by the …….
a)Length between centers
b)Swing diameter over the bed
c)Swing diameter over the carriage
d)All of these

46)The swing diameter over carriage is always less than swing diameter over bed.
a)Correct
b)Incorrect

47)Hard and tough materials like cast iron should be turned at….
a)Slow speed
b)High speed
c)Any speed
d)Certain specific speed.

48)The lathe centers are provided with standard taper known as ………..
a)Morse taper
b)Seller's taper
c)Capman taper
d)Brown & sharp taper

49)The cutting speed is maximum while machining…………..with a high speed steel tool.
a)Cast iron
b)Mild steel
c)Brass
d)Aluminium

50)The width of cutting edge of parting tool varies from………………
a)3-12mm
b)5-20mm
c)8-30mm
d)15-40mm

51)Spot facing is an operation of smoothing and squaring the surface around the hole
a)Correct
b)Incorrect

52)In order to achieve a specific surface finish in single point turning the most important factor to be controlled is……………….
a)Depth of cut
b)Cutting speed
c)Feed
d)Tool rake angle

ANSWERS:

1.a 2.b 3.b 4.b 5.b 6.b 7.a 8.b 9.a 10.a

11.a 12.a 13. a 14.a 15. a 16.a 17. a 18.c 19.c 20.a

21.b 22.b 23.d 24.a 25.a 26.d 27.b 28.a 29.a 30.c

31.b 32.d 33.b 34.a 35.d 36.a 37.d 38.d 39.a 40.b

41.b 42.d 43.a 44.b 45.d 46.a 47.a 48.a 49.d 50.a

51.a 52.b

Objective question paper on Metal Cutting for mechanical engineering student

OBJECTIVES ON TEST PAPER FOR METAL CUTTING

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