1
GATE ME 1994
True or False
+1
-0
$$CNC$$ machines are more accurate than conventional machines because they have a high resolution encoder and digital readouts for positioning
A
TRUE
B
FALSE
2
GATE ME 1992
MCQ (Single Correct Answer)
+1
-0.3
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
3
GATE ME 1991
Fill in the Blanks
+1
-0
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.
4
GATE ME 1989
MCQ (Single Correct Answer)
+1
-0.3
In $$NC$$ part programming spindle speed of $$730rpm$$ will be coded by the magic - $$3$$ rule as
A
$$S673$$
B
$$S730$$
C
$$S630$$
D
$$S037$$
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Turbo Machinery
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