A shell of 100 mm diameter and 100 mm height with the corner radius of 0.4 mm is to be produced by cup drawing. The required blank diameter is
(A) 118 mm
(B) 161 mm
(C) 224 mm
(D) 312 mm
A brass billet is to be extruded from its initial diameter of 100 mm to a final diameter of 50 mm. The working temperature of 700 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
The state of stress at a point "P" in a two dimensional loading is such that the Mohr's circle is a point located at 175 MPa on the positive normal stress axis.
(i) Determine the maximum and minimum principle stresses respectively from the Mohr's circle
(A) +175 MPa, -175 MPa
(B) +175 MPa, +175 MPa
(C) 0,-175 MPa
(D) 0,0
(ii) Determine the directions of maximum and minimum principle stresses at the point "P" from Mohr's circle
(A) 0, 90°
(B) 90°,0
(C)45°, 135°
(D) All directions