1
GATE PI 2007
MCQ (Single Correct Answer)
+2
-0.6
The geometric transformation specified by

$$\left[ {x'\,\,y'\,\,1} \right] = \left[ {x\,\,y\,\,1} \right]\left[ {\matrix{ {0.5} & 0 & 0 \cr 0 & {0.25} & 0 \cr 1 & 2 & 1 \cr } } \right]$$ in a $$2D.$$
In a $$2D$$ $$CAD$$ system represents................

A
Scaling and translation
B
Scaling and rotation
C
rotation and translation
D
rotation
2
GATE PI 2007
MCQ (Single Correct Answer)
+2
-0.6
The maximum possible percentage reduction in area per pass during wire drawing of an ideal plastic material without friction is of the order of
A
$$37$$
B
$$50$$
C
$$63$$
D
$$75$$
3
GATE PI 2007
MCQ (Single Correct Answer)
+2
-0.6
Circular blanks of $$35$$ $$mm$$ diameter are punched from a steel sheet of $$2$$ $$mm$$ thickness. If the clearance per side between the punch and die is to be kept as $$40$$ microns, the sizes of punch and die should respectively be.
A
$$35$$ & $$35.040$$
B
$$34.92$$ & $$35$$
C
$$35$$ & $$35.080$$
D
$$35.040$$ & $$34.92$$
4
GATE PI 2007
MCQ (Single Correct Answer)
+1
-0.3
The geometric tolerance that does not need a datum for its specification is
A
Concentricity
B
Run out
C
Perpendicularity
D
Flatness
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