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# GATE Mechanical 1989 Question

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

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

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