1
GATE PI 1992
MCQ (Single Correct Answer)
+2
-0.6
If the elongation factor during rolling of an ingot is $$1.22.$$ The minimum number of passes needed to produce a section $$250 \times 250\,\,mm$$ from an ingot of $$750 \times 750\,\,mm$$ are
A
$$8$$
B
$$9$$
C
$$10$$
D
$$17$$
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