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91.

The cemented carbide tools are generally poor in

92.

In orthogoual cutting of metals the cutting edge is

A.	Perpendicular to the direction of tool travel	B.	Perpendicular to the work piece
C.	Perpendicular to the shear plane	D.	Perpendicular to the axis of cutting tool
E.	None of the above

93.

The coefficient of friction between chip and tool is the variable. It can be reduced by

A.	Reducing the width of tool	B.	Reducing the depth of cut
C.	Reducing the effective rake angle	D.	None of these

94.

The binding material used in cemented carbide tools is

95.

In a machining operation on free cutting mild steel the cutting speed is mentioned as 70 m/min. What should be material of cutting tool

96.

In metal cutting operations shear angle is defined as the angle

A.	Made by the plane of shear with the direction of tool travel	B.	Made by the shear plane with the tool axis
C.	Made by shear plane with the central plane of work piece	D.	None of the above

97.

Discontinuous type chips are generally produced in

98.

In metal cutting operations continuous chips are produced while machining

99.

The coolant generally used while machining with carbide tools is

100.

In order to lower the cutting forces and also to decrease the cutting wear, alloying element generally added to steel for free machining is