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 GATE PI 2017 Machine Tools and Machining - Advance Machine Tools Question 2 English

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
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. GATE PI 2017 Machine Tools and Machining - Advance Machine Tools Question 1 English

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 2017
Numerical
+1
-0
A steel wire of $$2$$ $$mm$$ diameter is to be drawn from a wire of $$5mm$$ diameter. The value of true strain developed is _____________ (up to three decimal places)
Your input ____
4
GATE PI 2017
MCQ (Single Correct Answer)
+2
-0.6
A metallic strip having a thickness of $$12$$ $$mm$$ is to be rolled using two steel rolls, each of $$800$$ $$mm$$ diameter. It is assumed that there is no change in width of the strip during rolling. In order to achieve $$10\% $$ reduction in cross-sectional area of the strip after rolling, the angle subtended (in degrees) by the deformation zone at the center of the roll is
A
$$1.84$$
B
$$3.14$$
C
$$6.84$$
D
$$8.23$$
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