1
GATE PI 2015
Numerical
+2
-0
Open die forging of a cylinder made of a rigid perfectly plastic material with yield strength of $$200$$ $$MPa$$ having a height of $$25$$ $$mm$$ and diameter of $$25$$ $$mm$$ is being carried out. The cylinder is subjected to a true compressive strain of $$3.6$$ during the process. Assuming frictionless and homogeneous deformation, the energy expended, in $$kJ$$ is __________________.
Your input ____
2
GATE PI 2015
Numerical
+2
-0
A surface is prepared specially for an application with the profile as shown in the figure.
The theoretical $${R_a}$$ value for this surface, in $$\mu m,$$ is _______________.
Your input ____
3
GATE PI 2015
Numerical
+2
-0
During the measurement of internal taper of a part using standard balls of diameter $$15$$ $$mm$$ and $$20$$ $$mm$$, the large ball is found to protrude by $$5$$ $$mm$$ $$\left( {{h_1}} \right)$$ and the top of small ball is found to be $$35$$ $$mm$$ $$\left( {{h_2}} \right)$$ below the top face of the gauge. The taper angle, in degree, is ________________.
Your input ____
4
GATE PI 2015
MCQ (Single Correct Answer)
+1
-0.3
The room-temperature stress $$\left( \sigma \right)$$ - strain $$\left( \varepsilon \right)$$ curves of four materials $$P, Q, R$$ and $$S$$ are shown in the figure below. The material that behaves as a rigid perfectly plastic material is
Paper analysis
Total Questions
Casting
2
Engineering Mathematics
8
Fluid Mechanics
1
Heat Transfer
1
Industrial Engineering
3
Joining of Materials
1
Machine Tools and Machining
10
Metal Forming
4
Metrology
2
Strength of Materials
4
Theory of Machines
1
Thermodynamics
1
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