1
GATE ME 1997
Subjective
+5
-0
In a turning trail using orthogonal tool geometry, a chip length of $$84mm$$ was obtained for an uncut chip length of $$200mm.$$ The cutting conditions were $$V=30m/min,$$ $${t_1} = 0.5mm,$$ rake angle $$=20deg,$$ cutting tool is $$HSS.$$ Estimate shear plane angle, chip thickness and the shear plane angle for minimum chip strain.
2
GATE ME 1997
Subjective
+5
-0
A Throwaway carbide insert was used to machine a steel work pieces with a cutting speed of $$60$$ $$m/min,$$ tool life of $$40$$ minutes was observed, when the cutting speed was increased to $$100$$ $$m/min,$$ the tool life decreased to $$10$$ minutes. The cutting speed for maximum productivity, if tool change time is $$2$$ minutes is
3
GATE ME 1997
MCQ (Single Correct Answer)
+1
-0.3
Helix angle of fast helix drill is normally
A
$${35^ \circ }$$
B
$${60^ \circ }$$
C
$${90^ \circ }$$
D
$${5^ \circ }$$
4
GATE ME 1997
Fill in the Blanks
+2
-0
$$3$$ blocks of $${B_1},\,\,{B_2},\,\,{B_3}$$ are to be inserted in a channel of width $$'S'$$ maintaining a minimum gap of width $$T=0.125mm,$$ as shown in fig. For $$P = 18.75 \pm 0.08,\,$$ $$\,Q = 25.00 \pm 0.12,\,$$ $$\,R = 28.125 \pm 0.1$$ and $$S=72.35+X.$$ The tolerance $$' X '$$ is _______________. GATE ME 1997 Production Engineering - Metrology and Inspection Question 19 English
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