A CNC vertical milling machine has to cut a straight slot of 10 mm width and 2 mm depth by a cutter of 10 mm diameter between points (0,0) and (100,100) on the XY plane (dimensions in mm). The feed rate used for milling is 50 mm/min, milling time for the slot (in seconds) is

Manufacturing And Production Technology
A CNC vertical milling machine has to cut a straight slot of 10 mm width and 2 mm depth by a cutter of 10 mm diameter between points (0,0) and (100,100) on the XY plane (dimensions in mm). The feed rate used for milling is 50 mm/min, milling time for the slot (in seconds) is

170

180

120

240

170

180

120

240

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Manufacturing And Production Technology
The factor responsible for the formation of discontinuous chips is

High cutting speed and large rake angle

High cutting speed and small rake angle

Low cutting speed and large rake angle

Low cutting speed and small rake angle

High cutting speed and large rake angle

High cutting speed and small rake angle

Low cutting speed and large rake angle

Low cutting speed and small rake angle

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Manufacturing And Production Technology
Tool life is generally better when

Hard constituents are present in the micro-structure of the tool material

Grain size of the metal is small

None of the listed here

Grain size of the metal is large

Hard constituents are present in the micro-structure of the tool material

Grain size of the metal is small

None of the listed here

Grain size of the metal is large

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Manufacturing And Production Technology
In oblique cutting system, the maximum chip thickness

Depends upon the geometry of the tool

Occurs at the middle

Depends upon the material of the tool

May not occur at the middle

Depends upon the geometry of the tool

Occurs at the middle

Depends upon the material of the tool

May not occur at the middle

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Manufacturing And Production Technology
Volume of a cube of side ‘l’ and volume of a sphere of radius ‘r’ are equal. Both the cube and the sphere are solid and of same material. They are being cast. The ratio of the solidification time of the cube to the same of the sphere is

(4π/6)² × (r/l)⁴

(4π/6)³ × (r/l)⁶

(4π/6)² × (r/l)³

(4π/6) × (r/l)²

(4π/6)² × (r/l)⁴

(4π/6)³ × (r/l)⁶

(4π/6)² × (r/l)³

(4π/6) × (r/l)²

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Manufacturing And Production Technology
Glazing in grinding wheels can be decreased by

Using a harder wheel or by increasing the wheel speed

Using a harder wheel or by decreasing the wheel speed

Using a softer wheel or by increasing the wheel speed

Using a softer wheel or by decreasing the wheel speed

Using a harder wheel or by increasing the wheel speed

Using a harder wheel or by decreasing the wheel speed

Using a softer wheel or by increasing the wheel speed

Using a softer wheel or by decreasing the wheel speed

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Manufacturing And Production Technology

Manufacturing And Production Technology The factor responsible for the formation of discontinuous chips is

Manufacturing And Production Technology Tool life is generally better when

Manufacturing And Production Technology In oblique cutting system, the maximum chip thickness

Manufacturing And Production Technology Volume of a cube of side ‘l’ and volume of a sphere of radius ‘r’ are equal. Both the cube and the sphere are solid and of same material. They are being cast. The ratio of the solidification time of the cube to the same of the sphere is

Manufacturing And Production Technology Glazing in grinding wheels can be decreased by

Manufacturing And Production Technology
The factor responsible for the formation of discontinuous chips is

Manufacturing And Production Technology
Tool life is generally better when

Manufacturing And Production Technology
In oblique cutting system, the maximum chip thickness

Manufacturing And Production Technology
Volume of a cube of side ‘l’ and volume of a sphere of radius ‘r’ are equal. Both the cube and the sphere are solid and of same material. They are being cast. The ratio of the solidification time of the cube to the same of the sphere is

Manufacturing And Production Technology
Glazing in grinding wheels can be decreased by