1
GATE ME 1990
MCQ (Single Correct Answer)
+1
-0.3
Most of the metal cutting heat goes into the
A
Moving chip
B
cutting tool
C
Work material
D
machine tool
2
GATE ME 1990
Subjective
+5
-0
A tube is orthogonally machined in lathe to reduce its length under the following conditions.
Outside diameter of the tube : $$100mm,$$
Inside diameter of the tube $$=96$$ $$mm$$
$$RPM$$ of the work piece $$=120,$$
Longitudinal feed $$=0.5mm/rev$$
Cutting ratio $$=0.3,$$
Tangential force $$=800N,$$
Axial force $$=600N$$
Calculate the chip velocity in $$m/min$$ and the total power consumption in $$KW$$
3
GATE ME 1990
MCQ (Single Correct Answer)
+1
-0.3
If the longitudinal feed in center-less grinding is expressed by
$${V_f} = \pi \,D.\,\,N\,\sin \,\alpha ,\,\,D$$ stands for
A
Diameter of blank
B
Diameter of finished work piece
C
Diameter of control wheel
D
Diameter of grinding wheel
4
GATE ME 1990
MCQ (Single Correct Answer)
+1
-0.3
In small lot production for machining $$T-$$slots on machine tables, it is expected to use
A
Shaping machine
B
Broaching machine
C
Vertical milling machine
D
Horizontal milling machine
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