Materials Science and Manufacturing Engineering Miscellaneous
- In PTP type of NC system
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In a point to point type of NC system, only end position of tool is controlled. Neither path nor velocity of the tool is important.
Correct Option: B
In a point to point type of NC system, only end position of tool is controlled. Neither path nor velocity of the tool is important.
- Numerically controlled machine tools are better suited for... (batch/mass) production, because their setup time is.... (larger/smaller) in comparison to special purpose machine tools
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Set-up time for NC machines is smaller in comparison to special purpose machines hence, used for batch Production
Correct Option: A
Set-up time for NC machines is smaller in comparison to special purpose machines hence, used for batch Production
- In NC part programming spindle speed of 730 rpm will be coded by the magic -3 rule as
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G code for spindle speed is denoted by S.
Correct Option: B
G code for spindle speed is denoted by S.
- In a CAD package, mirror image of a 2D point P(5, 10) is to be obtained about a line which passes through the origin and makes an angle of 45° counterclockwise with the X-axis coordinates of the transformed point will be
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Transformation matrix for mirror image about y = x line
Mirror image will be at (10, 5).Correct Option: B
Transformation matrix for mirror image about y = x line
Mirror image will be at (10, 5).
- The geometric transformation specified by
In a 2D CAD system represents
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Transformation matrix has components of both rotation and translation.
Correct Option: C
Transformation matrix has components of both rotation and translation.
