1
GATE PI 2017
+2
-0.6
The preparatory and miscellaneous codes used in $$CNC$$ part programming and the functions are given in the Table

The correct combination of code and the respective function is

A
$$P - 4,\,\,Q - 1,\,\,R - 3,\,\,S - 2$$
B
$$P - 4,\,\,Q - 1,\,\,R - 2,\,\,S - 3$$
C
$$P - 1,\,\,Q - 4,\,\,R - 3,\,\,S - 2$$
D
$$P - 2,\,\,Q - 1,\,\,R - 3,\,\,S - 4$$
2
GATE PI 2017
+2
-0.6
In a numerical control $$(NC)$$ machine positioning system, the measures of precision are expressed by considering a single axis as shown in the Figure.

If $$\sigma$$ is standard deviation of the error distribution, the $$L$$, $$M$$ and $$N$$ are

A
$$L=$$ Accuracy, $$M=$$ Repeatability , $$N=$$ Control resolution
B
$$L=$$ Repeatability, $$M=$$ Accuracy, $$N=$$ Control resolution
C
$$L=$$ Control resolution, $$M=$$ Repeatability , $$N=$$ Accuracy
D
$$L=$$ Accuracy, $$M=$$ Control resolution , $$N=$$ Repeatability
3
GATE PI 2016
Numerical
+2
-0
A single axis $$CNC$$ table is driven by a $$DC$$ servo motor that is directly coupled to a lead screw of $$5$$ $$mm$$ pitch. The circular encoder attached to the lead screw generates $$1000$$ voltage pulses per revolution of the lead screw. The table moves at a constant speed of $$6$$ $$m/min.$$ The corresponding frequency (in $$kHz$$) of the voltage pulses generated by the circular encoder is __________________.
4
GATE PI 2015
+2
-0.6
Match the linear transformation matrices listed in the first column to their interpretations in the second column.
A
$$P - 1,\,\,Q - 2,\,\,R - 3,\,\,S - 4$$
B
$$P - 2,\,\,Q - 3,\,\,R - 4,\,\,S - 1$$
C
$$P - 3,\,\,Q - 4,\,\,R - 1,\,\,S - 2$$
D
$$P - 4,\,\,Q - 1,\,\,R - 2,\,\,S - 3$$
GATE PI Subjects
Fluid Mechanics
Metrology
Theory of Machines
Machine Tools and Machining
Industrial Engineering
Engineering Mechanics
Thermodynamics
Machine Design
Casting
Joining of Materials
Metal Forming
EXAM MAP
Medical
NEET