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GATE Mechanical 1989 Question

Signle Correct Answer
In $$NC$$ part programming spindle speed of $$730rpm$$ will be coded by the magic - $$3$$ rule as
A
$$S673$$
B
$$S730$$
C
$$S630$$
D
$$S037$$

GATE Mechanical 1991 Question

Answer by Yourself
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.

GATE Mechanical 1992 Question

Signle Correct Answer
In $$PTP$$ type of $$NC$$ system
A
Control of position and velocity of the tool is essential
B
Control of only position of the tool is sufficient
C
Control of only velocity of the tool is sufficient
D
Neither position nor velocity need to be controlled

GATE Mechanical 1994 Question

True or False Select
$$CNC$$ machines are more accurate than conventional machines because they have a high resolution encoder and digital readouts for positioning
A
TRUE
B
FALSE

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