1
GATE PI 1994
MCQ (Single Correct Answer)
+2
-0.6
An annealed copper wire of $$25 mm$$ diameter is drawn into a wire of $$5$$ $$mm$$ dia. The average yield stress in this operation if the flow curve of the material is given
$$\sigma = 315{ \in ^{0.54}}\,MPa$$
A
$$592$$ $$MPa$$
B
$$458$$ $$MPa$$
C
$$342$$ $$MPa$$
D
None
2
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
$$17$$
3
GATE PI 1992
Fill in the Blanks
+2
-0
To stress relive a cold worked steel part, it is heated to a temp close to ..... A....... and grains obtained after cooling are........ B.........
A. Lower critical temp/ upper critical temp
B. Fine / coarser
4
GATE PI 1992
Subjective
+2
-0
GATE PI 1992 Metal Forming - Metal Forming Process Question 35 English
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