1
GATE PI 2005
+1
-0.3
If each abrasive grain is viewed as a cutting tool, then which of the following represents the cutting parameters in common grinding operations?
A
Large negative rake angle, low shear angle and high cutting speed
B
Large positive rake angle, low shear angle and high cutting speed
C
Large negative rake angle, high shear angle and low cutting speed
D
Zero negative rake angle, high shear angle and high cutting speed
2
GATE PI 2005
+2
-0.6
In a machining operation chip thickness ratio is $$0.3$$ and the back rake angle of the tool is $${10^ \circ }.$$ What is the value of the shear strain?
A
$$0.31$$
B
$$0.13$$
C
$$3.00$$
D
$$3.34$$
3
GATE PI 2005
+2
-0.6
Consider the following statements
During the third stage of tool-wear, rapid deterioration of tool edge takes place because
$$1.$$ Flank wear is only marginal.
$$2.$$ Flank wear is large.
$$3.$$ Temperature of the tool increases gradually.
$$4.$$ Temperature of the tool increases drastically.

Which of the statements given above are correct?

A
$$1$$ & $$3$$
B
$$2$$ & $$4$$
C
$$1$$ & $$4$$
D
$$2$$ & $$3$$
4
GATE PI 2005
+2
-0.6
The rake angle of a cutting tool is $${15^ \circ }$$, shear angle $${45^ \circ }$$ and cutting velocity $$35$$ $$m/min$$. What is the velocity of chip along the tool face?
A
$$28.5$$ $$m/min$$
B
$$27.3$$ $$m/min$$
C
$$25.3$$ $$m/min$$
D
$$23.5$$ $$m/min$$
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