GATE PI 1994
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## GATE PI

Bentonite is commonly used bonding material for dry sand cores
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According to Chvorinove's rule, the solidification time of a casting is proportional to [Volume/Surface area]n where $$n View Question A cylinder of$$150mm$$diameter &amp;$$200mm$$height is to be cast with out any riser. The cylinder is moulded entire View Question The value of the following determinant$$\left[ {\matrix{ 1 &amp; 4 &amp; 9 \cr 4 &amp; 9 &amp; {16} \cr 9
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If for a matrix, rank equals both the number of rows and number of columns, then the matrix is called
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The matrix $$\left[ {\matrix{ 1 &amp; { - 4} \cr 1 &amp; { - 5} \cr } } \right]$$ is an inverse of the matri
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For the following matrix $$\left[ {\matrix{ 1 &amp; { - 1} \cr 2 &amp; 3 \cr } } \right]$$ the number of pos
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Given matrix $$L = \left[ {\matrix{ 2 &amp; 1 \cr 3 &amp; 2 \cr 4 &amp; 5 \cr } } \right]\,\,$$ and $$M View Question Solve for$$y$$if$${{{d^2}y} \over {d{t^2}}} + 2{{dy} \over {dt}} + y = 0$$with$$y(0)=1$$and$${y^1}\left( 0 \right
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The composition of an oxy-acetylene flame for cutting of steel contain more oxygen.
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In metal cutting $$BUE$$ formation results in
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Only negative rake angles are used with the following tool material
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Machinability of steels is improved by the addition of
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The heat generated in metal cutting is dissipated in different proportions into environment, tool, chip and work-piece.
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Parting-off operation is carried out on a cylindrical work-piece of $$100mm$$ diameter. The groove width is $$2$$ $$mm$$
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Parting-off operation is carried out on a cylindrical work-piece of $$100mm$$ diameter. The groove width is $$2$$ $$mm$$
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A part can be machined in $$30$$ minutes on an engine lathe where as it can be machined in $$6$$ minutes on a turret lat
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In an orthogonal cutting operation, the cutting velocity is $$30$$ $$m/min$$ and the chip velocity $$15$$ $$m/min.$$ If
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In an orthogonal cutting operation, the cutting velocity is $$30$$ $$m/min$$ and the chip velocity $$15$$ $$m/min.$$ If
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In an orthogonal cutting operation, The depth of cut $$=2$$ $$mm,$$ Width of cut $$=15$$ $$mm,$$ Cutting speed $$=0.5 View Question In an orthogonal cutting operation, The depth of cut$$=2mm,$$Width of cut$$=15mm,$$Cutting speed$$=0.5View Question In an orthogonal cutting operation, The depth of cut $$=2$$ $$mm,$$ Width of cut $$=15$$ $$mm,$$ Cutting speed $$=0.5 View Question$$FMS$$is well suited to mass scale manufacturing. View Question In$$DNC$$each machine tool is controlled by a dedicated computer. View Question$$FAPT$$is a part programming language. View Question Match the following View Question In order to reduce roll pressure in strip rolling, back tension can be applied to strip. View Question Forces in hot extrusion is a function of the strain hardening component of the billet material. View Question Which one of the following manufacturing process requires the provision of 'gutters' View Question A moving mandrel is used in View Question An annealed copper wire of$$25 mm$$diameter is drawn into a wire of$$5mm$$dia. The average yield stress in this View Question In a bending operation, If the modulus of elasticity$$E$$is increased keeping all other parameters unchanged, the spri View Question In blanking operation, the best way to improve the smoothness and squarness of the edges is to View Question In producing a punched hole of$$20mm$$diameter, the dimension of the punch is ........ given the radial die clearance View Question The function of draw bead in the deep drawing operation is to View Question In metal forming operation, the true strain in the$$X$$-direction is$$0.3$$and in the$$Y$$-direction is$$-0.1.Th View Question Abbe's principle of alignment is used in measurements made in ................. View Question The combination of slip gauges to obtain a dimension of10.35mm$$will be View Question A hole is specified as$$\phi 30 \pm 0.04mm$$with$$\phi \,\,0.01\,\,M.\$ The virtual diameter of the hole (i.e the max
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