1
GATE PI 2013
MCQ (Single Correct Answer)
+1
-0.3
In a rolling process, the state of stress of the material undergoing deformation is
A
pure compression
B
pure shear
C
compression and shear
D
tension and shear
2
GATE PI 2012
MCQ (Single Correct Answer)
+1
-0.3
A solid cylinder of diameter $$100$$ $$mm$$ and height $$50$$ $$mm$$ is forged between two frictionless flat dies to a height of $$25$$ $$mm.$$ The percentage change in diameter is
A
$$0$$
B
$$2.07$$
C
$$20.7$$
D
$$41.4$$
3
GATE PI 2010
MCQ (Single Correct Answer)
+1
-0.3
Cold shut (lap) may occur in products obtained by:
A
Casting
B
Forging
C
Machining
D
Welding
4
GATE PI 2010
MCQ (Single Correct Answer)
+1
-0.3
Hot die steel, used for large solid dies in drop forging, should necessarily have
A
high strength and high copper content
B
High hardness and low hardenability
C
High toughness and low thermal conductivity
D
High hardness and high thermal conductivity
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