GATE ME

Metal Cutting

Production Engineering

(Past Years Questions)

Marks 1

More
In an orthogonal cutting process the tool used has rake angle of zero degree. The measured cutting force and thrust forc...
GATE ME 2016 Set 1
Under certain cutting conditions, doubling the cutting speed reduces the tool life to $${\left( {{1 \over {16}}} \right)...
GATE ME 2015 Set 1
Better surface finish is obtained with a large rake angle because
GATE ME 2014 Set 4
A straight turning operation is carried out using a single point cutting tool on an $$AISI$$ $$1020$$ steel rod. The fee...
GATE ME 2014 Set 3
Cutting tool is much harder than the work piece. Yet the tool wears out during the tool-work interaction, because
GATE ME 2014 Set 3
The main cutting force acting on a tool during the turning (orthogonal cutting) operation of a metal is $$400N.$$ The tu...
GATE ME 2014 Set 1
If the Taylor's tool life exponent $$n$$ is $$0.2,$$ and the tool changing time is $$1.5$$ $$min,$$ then the tool life (...
GATE ME 2014 Set 1
Friction at the tool - chip interface can be reduced by
GATE ME 2009
The minimum shear strain in orthogonal turning with a cutting tool of zero rake angle is
GATE ME 2009
Formation on build-up edge during machining can be avoided by using
GATE ME 2003
$$BUE$$ is formed while machining
GATE ME 2002
A built up edge is formed while machining
GATE ME 2000
Cutting power consumption in turning can be signification reduced by
GATE ME 1995
The effect of rake angle on the mean friction angle in machining can be explained by
GATE ME 1992
Most of the metal cutting heat goes into the
GATE ME 1991
Most of the metal cutting heat goes into the
GATE ME 1990
The size of $$BLUE$$ in metal cutting increases with
GATE ME 1989
Crater wear always starts at some distance from the tool tip because at that point
GATE ME 1989
The ideal cutting fluid for low speed machining of metals should be one which
GATE ME 1988
Cutting tools are provided with large positive rake angle mainly for
GATE ME 1987
If in a turning operation both the feed rate and the nose radius are doubled the surface finish values will be
GATE ME 1987

Marks 2

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During the turning of a $$20$$ $$mm-$$diameter steel bar at a spindle speed of $$400$$ $$rpm,$$ a tool life of $$20$$ mi...
GATE ME 2017 Set 2
In an orthogonal machining with a tool of $${9^ \circ }$$ orthogonal rake angle, the uncut chip thickness is $$0.2$$ $$m...
GATE ME 2017 Set 2
Two cutting tools with tool life equations given below are being compared: $$\eqalign{ & Tool\,\,1:\,\,\,\,\,\,\,V{T^...
GATE ME 2017 Set 1
For an orthogonal cutting operation, tool material is $$HSS,$$ rake angle is $${22^ \circ },$$ chip thickness is $$0.8$$...
GATE ME 2016 Set 3
In a single point turning operation with cemented carbide tool and steel work piece, it is found that the Taylor's expon...
GATE ME 2016 Set 3
For a certain job, the cost of metal cutting is $$Rs.18C/V$$ and the cost of tooling is Rs.$$270C/(TV).$$ Where $$C$$ is...
GATE ME 2016 Set 2
The too life equation for $$HSS$$ tool is $$V{T^{0.14}}\,\,{f^{0.7}}\,\,{d^{0.4}} = $$ Constant. The tool life $$(T)$$ o...
GATE ME 2016 Set 1
Orthogonal turning of a mild steel tube with a tool of rake angle $${10^0}$$ is carried out at a feed of $$0.14$$ $$mm/r...
GATE ME 2015 Set 3
A single point cutting tool with $${0^0}$$ rake angle is used in an orthogonal machining process. At a cutting speed of ...
GATE ME 2015 Set 2
An orthogonal turning operation is carried out under the following conditions; rake angle $$ = {5^ \circ },$$ spindle ro...
GATE ME 2015 Set 1
A cast iron block of $$200$$ $$mm$$ length is being shaped in a shaping machine with a depth of cut of $$4$$ $$mm,$$ fee...
GATE ME 2014 Set 4
Which pair of following statement is correct for orthogonal cutting using a single-point cutting tool? $$P.$$ reduction ...
GATE ME 2014 Set 3
During pure orthogonal turning operation of a hollow cylindrical pipe, it is found that the thickness of the chip produc...
GATE ME 2014 Set 1
Two cutting tools are being compared for a machining operation. The tool life equations are: $$\eqalign{ & \,\,\,\,\,\...
GATE ME 2013
In orthogonal turning of a bar of $$100$$ $$mm$$ diameter with a feed of $$0.25$$ $$min/rev,$$ depth of cut of $$4$$ $$m...
GATE ME 2013
In orthogonal turning of a bar of $$100$$ $$mm$$ diameter with a feed of $$0.25$$ $$min/rev,$$ depth of cut of $$4$$ $$m...
GATE ME 2013
A single-point cutting tool with $${12^0}$$ rake angle is used to machine a steel work-piece. The depth of cut, $$i.e$$ ...
GATE ME 2011
For tool $$A,$$ Taylor’s tool life exponent $$(n)$$ is $$0.45$$ and constant $$(K)$$ is $$90.$$ Similarly for tool $$B,$...
GATE ME 2010
In a machining experiment, tool life was found to vary with the cutting speed in the following manner The exponent $$(...
GATE ME 2009
In a machining experiment, tool life was found to vary with the cutting speed in the following manner What is percenta...
GATE ME 2009
In a single point turning tool, the side rake angle and orthogonal rake angle are equal. $$\varphi $$ is the principle c...
GATE ME 2008
Orthogonal turning is performed on a cylindrical work piece with shear strength of $$250Mpa.$$ The following conditions ...
GATE ME 2008
Orthogonal turning is performed on a cylindrical work piece with shear strength of $$250Mpa.$$ The following conditions ...
GATE ME 2008
A low carbon steel bar of $$147$$ $$mm$$ diameter with length of $$630$$ $$mm$$ is being turned with uncoated carbide in...
GATE ME 2007
A low carbon steel bar of $$147$$ $$mm$$ diameter with length of $$630$$ $$mm$$ is being turned with uncoated carbide in...
GATE ME 2007
In orthogonal turning of a low carbon steel bar of diameter $$150mm$$ with uncoated carbide tool, the cutting velocity i...
GATE ME 2007
In orthogonal turning of medium carbon steel, the specific machining energy is $$2$$ $$kJ/m{m^3},$$ the cutting velocity...
GATE ME 2007
In orthogonal turning of low carbon steel pipe with principal cutting edge angle of $$90,$$ the main cutting force is $$...
GATE ME 2007
In an orthogonal machining operation: $$\,\,\,\,\,\,\,\,\,\,$$Uncut thickness $$\,\,\,\,\,$$ $$= 0.5$$ $$mm$$ $$\,\,\,\...
GATE ME 2006
In an orthogonal machining operation: $$\,\,\,\,\,\,\,\,\,\,$$Uncut thickness $$\,\,\,\,\,$$ $$= 0.5$$ $$mm$$ $$\,\,\,\...
GATE ME 2006
In an orthogonal machining operation: $$\,\,\,\,\,\,\,\,\,\,$$Uncut thickness $$\,\,\,\,\,$$ $$= 0.5$$ $$mm$$ $$\,\,\,\...
GATE ME 2006
The figure below shows a graph, which qualitatively relates cutting speed and cost per piece produced. The three curve...
GATE ME 2005
Two tools $$P$$ and $$Q$$ have signature $${5^ \circ } - {5^ \circ } - {6^ \circ } - {6^ \circ } - {8^ \circ } - {30^ \c...
GATE ME 2005
In a machining operation, doubling the cutting speed reduces the tool life to $$1/{8^{th}}$$ of the original value. The ...
GATE ME 2004
A batch of $$10$$ cutting tools could produce $$500$$ components while working at $$50$$ $$rpm$$ with a tool feed of $$0...
GATE ME 2003
During orthogonal cutting of mild steel with a $$10$$ degrees rake angle tool the chip thickness ratio was obtained as $...
GATE ME 2001
For turning $$NiCr$$ alloy steel at cutting speeds of $$64m/min$$ and $$100m/min,$$ the respective tool lives are $$15mi...
GATE ME 2001
A conventional lathe and a $$CNC$$ lathe are under consideration for machining a given part. The relevant data are shown...
GATE ME 2000
What is the approximate $$\% $$ change in the life, $$t,$$ of the tool with zero rake angle used in orthogonal cutting w...
GATE ME 1999
In orthogonal machining operation, the chip thickness and the uncut chip thickness are equal to $$0.45mm$$. If the tool ...
GATE ME 1998
In a typical metal cutting operation, using a cutting tool of positive rake $$\gamma = 10\deg ,$$ it was observed that ...
GATE ME 1997
A cutting tool has a nose radius of $$1.8mm$$. The feed rate for a theoretical surface roughness of $${R_t} = 5$$ micron...
GATE ME 1997
In turning operation the feed rate could be doubled to increase the metal removal rate To keep the same level of surface...
GATE ME 1989
Pure metal pose machinability problem in turning operations. The reason is the
GATE ME 1988

Marks 5

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In an orthogonal cutting test on mild steel, the following data were obtained Cutting speed: $$40$$ $$m/min,$$ Depth of...
GATE ME 2004
A standard machine tool and an automatic machine tool are being compared for the production of a component. Following da...
GATE ME 2004
A cylinder is turned on a lathe with orthogonal machining principle. Spindle rotates at $$200rpm$$. The axial feed rate ...
GATE ME 2003
A cylinder is turned on a lathe with orthogonal machining principle. Spindle rotates at $$200rpm$$. The axial feed rate ...
GATE ME 2003
A tube of $$32mm$$ outside diameter was turned on a lathe and the following data was obtained Rake angle $$=35deg,$$ F...
GATE ME 2002
Tool life testing on a lathe under dry cutting conditions gave $$'n'$$ and $$'C'$$ of Taylor tool life equation as $$0.1...
GATE ME 2001
Identical straight turning operation was carried out using two tools : $$8 - 8 - 5 - 5 - 5 - 25 - 0\,(ASA)$$ and $$8-8-5...
GATE ME 2001
In an orthogonal cutting experiment with a tool of rake angle $$7$$$$deg$$, the chip thickness was found to be $$2.5mm$$...
GATE ME 1999
The lives of two tools $$A$$ & $$B$$, governed by the equation $$V{T^{0.125}} = 2.5$$ and $$V{T^{0.25}} = 7$$ respective...
GATE ME 1999
In a turning trail using orthogonal tool geometry, a chip length of $$84mm$$ was obtained for an uncut chip length of $$...
GATE ME 1997
A Throwaway carbide insert was used to machine a steel work pieces with a cutting speed of $$60$$ $$m/min,$$ tool life o...
GATE ME 1997
Tool life of a $$10$$ hours is obtained when cutting with a single point tool at $$63m/min.$$ If Taylor's constant $$C=...
GATE ME 1996
A single point turning tool is designated as $$${10^ \circ } - {12^ \circ } - {7^ \circ } - {5^ \circ } - {20^ \circ } ...
GATE ME 1995
If under a condition of plain turning the life of the cutting tool decreases by $$50\% $$ due to increase in the cutting...
GATE ME 1995
While turning a $$C15$$ steel of $$160mm$$ diameter at $$215rpm,$$ $$2.5mm$$ depth of cut and feed of $$0.16mm/rev$$ by ...
GATE ME 1995
A single point cutting tool made of $$HSS$$ has the value of constant $$'C'$$ $$80,$$ and $$n=0.2$$ in the basic tool li...
GATE ME 1994
A mild steel block of width $$40$$ $$mm$$ is being milled using a straight slab cutter $$70mm$$ diameter with $$30$$teet...
GATE ME 1994
In an orthogonal cutting operation on a work piece of width $$2.5mm,$$ the uncut chip thickness was $$0.25$$ $$mm$$ and ...
GATE ME 1992
Determine the Merchants constant $$'C'$$ (shear angle relation) for aluminium from the following orthogonal machining da...
GATE ME 1991
Calculate the $$MRR$$ and Specific cutting pressure for the following cutting conditions Work material : steel, Tool ma...
GATE ME 1991
Find the percentage change in cutting speed required to give a $$50\% $$ reduction in tool life (that is required tool l...
GATE ME 1991
A tube is orthogonally machined in lathe to reduce its length under the following conditions. Outside diameter of the tu...
GATE ME 1990
In an orthogonal cutting test on the following data were obtained Uncut chip thickness $$=0.25mm,$$ Cutting speed: $$60m...
GATE ME 1989
The following data is available for machining a component on a turret or center lathe: find out the total number of comp...
GATE ME 1989
The cutting tool are being tried for an operation. Tailors tool life equation for them are as follows $$\eqalign{ & HS...
GATE ME 1989
During orthogonal turning of a steel rod by zero rake tool at feed $$0.25mm/rev$$ and depth of cut $$2.0mm,$$ the follow...
GATE ME 1987
In a turning operation the tool life of the carbide tool was found to be $$20min$$ and $$100min,$$ at cutting speeds of ...
GATE ME 1987

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