1
GATE PI 2003
MCQ (Single Correct Answer)
+2
-0.6
A cylinder of $$25mm$$ diameter and $$100mm$$ length is turned with a tool, for which the relation $$V{T^{0.25}} = 55$$ is applicable. The cutting velocity is $$22m/min.$$ For a tool feed of $$0.046$$ $$mm/rev,$$ the number of tool regrinds required to produce $$425$$ cylinders is
A
$$12$$
B
$$22$$
C
$$43$$
D
$$85$$
2
GATE PI 2003
MCQ (Single Correct Answer)
+5
-1.5
The following data refers to an orthogonal machining of mild steel with a single point $$HSS$$ tool. Rake angle of tool $$ = {10^ \circ },$$ uncut chip thickness $$=0.3mm,$$ width of cut $$=2.0mm,$$ single plane shear angle $$ = {36^ \circ },$$ shear strength of mild steel $$=450$$ $$MPa,$$ using Merchants analysis

The coefficient of friction between the chip and tool will be

A
$$0.141$$
B
$$0.344$$
C
$$0.532$$
D
$$0.688$$
3
GATE PI 2003
MCQ (Single Correct Answer)
+5
-1.5
The following data refers to an orthogonal machining of mild steel with a single point $$HSS$$ tool. Rake angle of tool $$ = {10^ \circ },$$ uncut chip thickness $$=0.3mm,$$ width of cut $$=2.0mm,$$ single plane shear angle $$ = {36^ \circ },$$ shear strength of mild steel $$=450$$ $$MPa,$$ using Merchants analysis

The shear force in cutting will be

A
$$270$$ $$N$$
B
$$333.75$$
C
$$450$$ $$N$$
D
$$459.34$$ $$N$$
4
GATE PI 2003
MCQ (Single Correct Answer)
+1
-0.3
Which one of the following is not a synthetic abrasive material
A
silicon carbide
B
aluminium oxide
C
titanium nitride
D
cubic boron nitride
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Graduate Aptitude Test in Engineering
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