1
GATE ME 2016 Set 1
MCQ (Single Correct Answer)
+2
-0.6
The too life equation for $$HSS$$ tool is $$V{T^{0.14}}\,\,{f^{0.7}}\,\,{d^{0.4}} = $$ Constant. The tool life $$(T)$$ of $$30$$ $$min$$ is obtained using the following cutting conditions $$=45$$ $$m/min,$$ $$f=0.35mm,$$ $$d=2.0$$ $$mm.$$ If speed $$(V),$$ feed $$(f)$$ and depth of cut $$(D)$$ are increased individually by $$25\% ,$$ the tool life (in $$min$$) is
A
$$0.15$$
B
$$1.06$$
C
$$22.50$$
D
$$30.0$$
2
GATE ME 2015 Set 3
MCQ (Single Correct Answer)
+2
-0.6
Orthogonal turning of a mild steel tube with a tool of rake angle $${10^0}$$ is carried out at a feed of $$0.14$$ $$mm/rev.$$ If the thickness of the chip produced is $$0.28mm,$$ the values of shear angle and shear strain will be respectively.
A
$${28^ \circ }20'$$ and $$2.19$$
B
$${22^ \circ }20'$$ and $$3.53$$
C
$${24^ \circ }30'$$ and $$4.19$$
D
$${37^ \circ }20'$$ and $$5.19$$
3
GATE ME 2015 Set 2
Numerical
+2
-0
A single point cutting tool with $${0^0}$$ rake angle is used in an orthogonal machining process. At a cutting speed of $$180$$ $$m/min$$ the thrust force is $$490N.$$ If the coefficient of friction between the tool and the chip is $$0.7.$$ Then the power consumption (in $$kW$$) for the machining operation is ____________
Your input ____
4
GATE ME 2015 Set 1
Numerical
+2
-0
An orthogonal turning operation is carried out under the following conditions; rake angle $$ = {5^ \circ },$$ spindle rotational speed $$=400$$ $$rpm,$$ axial feed $$=0.4$$ $$m/min$$ and radial depth of $$cut = 5mm$$. The chip thickness, $${t_c},$$ is found to be $$3mm.$$ The shear angle (in degrees) in this turning process is ________________
Your input ____
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