1
GATE PI 1995
MCQ (Single Correct Answer)
+5
-1.5
In an orthogonal machining experiment using a tool having $${6^ \circ }.$$ Rake angle, the following data were collected. Cutting speed $$0.5$$ $$m/sec,$$ width of cut $$3$$ $$mm,$$ depth of cut $$1mn,$$ chip thickness $$1.5mm.$$ Assuming that shearing takes place under minimum energy condition,

The coefficient of friction between the chip tool interfaces will be

A
$$0.235$$
B
$$0.339$$
C
$$0.467$$
D
none
2
GATE PI 1995
MCQ (Single Correct Answer)
+5
-1.5
In an orthogonal machining experiment using a tool having $${6^ \circ }.$$ Rake angle, the following data were collected. Cutting speed $$0.5$$ $$m/sec,$$ width of cut $$3$$ $$mm,$$ depth of cut $$1mn,$$ chip thickness $$1.5mm.$$ Assuming that shearing takes place under minimum energy condition,

Area of shear plane is

A
$$3m{m^2}$$
B
$$4m{m^2}$$
C
$$5.2m{m^2}$$
D
$$7.1m{m^2}$$
3
GATE PI 1995
MCQ (Single Correct Answer)
+5
-1.5
In an orthogonal machining experiment using a tool having $${6^ \circ }.$$ Rake angle, the following data were collected. Cutting speed $$0.5$$ $$m/sec,$$ width of cut $$3$$ $$mm,$$ depth of cut $$1mn,$$ chip thickness $$1.5mm.$$ Assuming that shearing takes place under minimum energy condition,

Chip velocity is

A
$$10m/min$$
B
$$20m/min$$
C
$$30m/min$$
D
$$40m/min$$
4
GATE PI 1995
MCQ (Single Correct Answer)
+5
-1.5
In a single pass turning operation the cutting speed is the only variable Based on the cutting time cost and the cutting edge cost. The tool life for minimum cost given that cost of $$1$$ cutting edge is Rs.$$5$$, operator wages including the machine tool cost is Rs. $$75$$/hour and tool life equation is $$V{T^{0.1}}$$ is $$100.$$
A
$$10$$
B
$$17$$
C
$$29$$
D
$$36$$
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