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# GATE Mechanical 1987 Question

Cutting tools are provided with large positive rake angle mainly for
A
Increasing the strength of the cutting edge
B
Avoiding rubbing action with the finished surfaces
C
Reducing the magnitude of the cutting force
D
Better heat dissipation

# GATE Mechanical 1987 Question

If in a turning operation both the feed rate and the nose radius are doubled the surface finish values will be
A
Decreases by $50\%$
B
Increases by $300\%$
C
Increases by $100\%$
D
Remain unaffected

# GATE Mechanical 1988 Question

The ideal cutting fluid for low speed machining of metals should be one which
A
removes the heat faster from the cutting zone,
B
forms a coating on the cutting tool by chemical reaction
C
forms a low shear strength film of work material at the tool chip interface
D
serves as a dielectric minimizing thereby reactions due to $EMF$ at the interface

# GATE Mechanical 1989 Question

The size of $BLUE$ in metal cutting increases with