1
GATE PI 2009
MCQ (Single Correct Answer)
+2
-0.6
An orthogonal operation is carried out at $$20m/min$$ cutting speed, using a cutting tool of rake angle $$15deg$$. The chip thickness is $$0.4mm$$ and uncut chip thickness is $$0.2mm.$$

The shear angle (in degrees) is

A
$$26.8$$
B
$$27.8$$
C
$$28.8$$
D
$$29.8$$
2
GATE PI 2009
MCQ (Single Correct Answer)
+2
-0.6
An orthogonal operation is carried out at $$20m/min$$ cutting speed, using a cutting tool of rake angle $$15deg$$. The chip thickness is $$0.4mm$$ and uncut chip thickness is $$0.2mm.$$

The chip velocity (in $$m/min$$) is

A
$$8$$
B
$$10$$
C
$$12$$
D
$$14$$
3
GATE PI 2008
MCQ (Single Correct Answer)
+2
-0.6
In an orthogonal cutting experiment, an $$HSS$$ tool having the following tool signature in the orthogonal reference system $$(ORS)$$ has been used: $$0-10-7-7-10-75-1$$
Given : Width of cut $$=3.6mm;$$
Shear strength of work piece material $$460N/m{m^2};$$
Depth of cut $$=0.25mm;$$
Coefficient of friction at chip tool interface $$=0.7.$$

Shear plane angle (in degrees) for minimum cutting force is

A
$$20.5$$
B
$$24.5$$
C
$$28.6$$
D
$$32.5$$
4
GATE PI 2008
MCQ (Single Correct Answer)
+2
-0.6
In an orthogonal cutting experiment, an $$HSS$$ tool having the following tool signature in the orthogonal reference system $$(ORS)$$ has been used: $$0-10-7-7-10-75-1$$
Given : Width of cut $$=3.6mm;$$
Shear strength of work piece material $$460N/m{m^2};$$
Depth of cut $$=0.25mm;$$
Coefficient of friction at chip tool interface $$=0.7.$$

Minimum Power requirement (in $$KW$$) at a cutting speed of $$150m/min$$ is

A
$$2.6$$
B
$$3.25$$
C
$$3.35$$
D
$$3.45$$
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Graduate Aptitude Test in Engineering
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