1

GATE PI 2017

MCQ (Single Correct Answer)

+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

2

GATE PI 2017

MCQ (Single Correct Answer)

+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

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 __________________.

Your input ____

4

GATE PI 2015

MCQ (Single Correct Answer)

+2

-0.6

Match the linear transformation matrices listed in the first column to their interpretations in the second column.

Questions Asked from Advance Machine Tools (Marks 2)

Number in Brackets after Paper Indicates No. of Questions

GATE PI Subjects

Fluid Mechanics

Metrology

Theory of Machines

Engineering Mathematics

Machine Tools and Machining

Industrial Engineering

Engineering Mechanics

Strength of Materials

Thermodynamics

Machine Design

Casting

Joining of Materials

Metal Forming