The relation between tool life (T) and cutting speed (V) is VTn = Constant. In this relation, the value of n depends upon

As the cutting speed increases, the tool cutting forces

A

Remain constant

B

Increases

C

Decreases

D

First increases and then decreases

The cutting speed for drilling aluminium, brass and bronze with carbon steel drills is _________ cutting speed for drilling mild steel with high speed steel drills.

A

Equal to

B

Less than

C

More than

D

None of these

The cutting speed of a drill depends upon the

A

Material of drill

B

Type of material to be drilled

C

Quality of surface finish desired

D

All of these

In oblique cutting system, the cutting edge of the tool

A

May clear the width of the workpiece

B

May or may not clear the width of the workpiece

C

May not clear the width of the workpiece

D

Should always clear the width of the workpiece

In oblique cutting of metals, the cutting edge of the tool is

A

Perpendicular to the workpiece

B

Perpendicular to the direction of tool travel

C

Parallel to the direction of tool travel

D

Inclined at an angle less than 90° to the direction of tool travel

The angle made by the face of the tool and the plane parallel to the base of cutting tool is called

A

Rake angle

B

Cutting angle

C

Clearance angle

D

Lip angle

For machining a mild steel workpiece by a high speed steel tool, the average cutting speed is

A

5 m/min

B

10 m/ min

C

15 m/min

D

30 m/min

For machining a cast iron workpiece by a high speed steel tool, the average cutting speed is

A

10 m/min

B

15 m/min

C

22 m/min

D

30 m/min

The average cutting speed for turning brass with a high speed steel tool is

A

15 to 19 m/min

B

25 to 31 m/min

C

60 to 90 m/min

D

90 to 120 m/min

The average cutting speed for turning mild steel with a high speed steel tool is

A

15 to 19 m/min

B

25 to 31 m/min

C

60 to 90 m/min

D

90 to 120 m/min

The relation between tool life (T) and cutting speed (V) is VTn = Constant. In this relation, the value of n depends upon

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