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
Engineering Mechanics
Strength of Materials
Theory of Machines
Engineering Mathematics
Machine Design
Fluid Mechanics
Heat Transfer
Thermodynamics
Casting
Joining of Materials
Metal Forming
Machine Tools and Machining
Metrology
Industrial Engineering
EXAM MAP
Joint Entrance Examination