1
GATE ME 2006
+2
-0.6
In a wire drawing operation, diameter of a steel wire is reduced from $$10$$ $$mm$$ to $$8$$ $$mm.$$ the mean flow stress of the material is $$400$$ $$MPa.$$ The ideal force required for drawing ignoring friction and redundant work is:
A
$$4.48$$ $$kN$$
B
$$8.97$$ $$kN$$
C
$$20.11$$ $$kN$$
D
$$31.41$$ $$kN$$
2
GATE ME 2004
+2
-0.6
In a rolling process, sheet of $$25$$ $$mm$$ thickness is rolled to $$20$$ $$mm$$ thickness. Roll is of diameter $$600$$ $$mm$$ and it rotates at $$100$$ $$rpm.$$ The roll strip contact length will be
A
$$5$$ $$mm$$
B
$$39$$ $$mm$$
C
$$78$$ $$mm$$
D
$$120$$ $$mm$$
3
GATE ME 2003
+2
-0.6
A brass billet is to be excluded from its initial diameter of $$100mm$$ to a final diameter of $$50mm$$. The working temperature is $${700^ \circ }C$$ and the extrusion constant is $$250$$ $$MPa.$$ The force required for extrusion is
A
$$5.44$$ $$MN$$
B
$$2.72$$ $$MN$$
C
$$1.36$$ $$MN$$
D
$$0.36$$ $$MN$$
4
GATE ME 1998
+2
-0.6
A strip with sectional area $$150mm\,\, \times \,\,4.5mm$$ is being rolled with $$20\%$$ reduction of area using $$450mm$$ diameter rollers. The angle subtended by the deformation zone at the roll center is (in radians)
A
$$0.01$$
B
$$0.02$$
C
$$0.03$$
D
$$0.06$$
GATE ME Subjects
Engineering Mechanics
Strength of Materials
Theory of Machines
Engineering Mathematics
Machine Design
Fluid Mechanics
Turbo Machinery
Heat Transfer
Thermodynamics
Production Engineering
Industrial Engineering
General Aptitude
EXAM MAP
Joint Entrance Examination