1
GATE PI 1994
MCQ (Single Correct Answer)
+1
-0.3
Which one of the following manufacturing process requires the provision of 'gutters'
A
closed die forging
B
centrifugal casting
C
Investment casting
D
impact extrusion
2
GATE PI 1994
MCQ (Single Correct Answer)
+1
-0.3
A moving mandrel is used in
A
wire drawing
B
tube drawing
C
metal cutting
D
forging
3
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
4
GATE PI 1994
MCQ (Single Correct Answer)
+1
-0.3
In a bending operation, If the modulus of elasticity $$E$$ is increased keeping all other parameters unchanged, the spring back will
A
increase
B
decrease
C
remains unchanged
D
be independent of $$E$$
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