1
GATE PI 2012
+2
-0.6
Calculate the punch size in $$mm,$$ for a circular blanking operation for which details are given below.

Size of the blank $$25$$ $$mm$$
Thickness of the sheet $$2$$ $$mm$$
Radial clearance between punch and die $$0.06$$ $$mm,$$ Die allowance $$0.05$$ $$mm$$

A
$$24.83$$
B
$$24.89$$
C
$$25.01$$
D
$$25.17$$
2
GATE PI 2009
+2
-0.6
A disc of $$200$$ $$mm$$ diameter is blanked from a strip of an aluminium alloy of thickness $$3.2$$ $$mm.$$ The material shear strength to fracture is $$150$$ $$MPa.$$ The blanking force (in $$kN$$) is
A
$$291$$
B
$$301$$
C
$$311$$
D
$$421$$
3
GATE PI 2008
+2
-0.6
Match the following A
$$P - 2,\,\,Q - 3,\,\,R - 4,\,\,S - 1$$
B
$$P - 3,\,\,Q - 4,\,\,R - 1,\,\,S - 2$$
C
$$P - 2,\,\,Q - 3,\,\,R - 1,\,\,S - 4$$
D
$$P - 2,\,\,Q - 4,\,\,R - 3,\,\,S - 1$$
4
GATE PI 2008
+2
-0.6
A blank of $$50$$ $$mm$$ diameter is to be sheared from a sheet of $$2.5$$ $$mm$$ thickness. The required radial clearance between the die and the punch is $$6\%$$ of sheet thickness. The punch and die diameter $$(mm)$$ for this blanking operation respectively are
A
$$50.00$$ & $$50.30$$
B
$$50.00$$ & $$50.15$$
C
$$49.70$$ & $$50.00$$
D
$$49.85$$ & $$50.00$$
GATE PI Subjects
Engineering Mechanics
Strength of Materials
Theory of Machines
Engineering Mathematics
Machine Design
Fluid Mechanics
Heat Transfer
Thermodynamics
Casting
Joining of Materials
Metal Forming
Machine Tools and Machining
Metrology
Industrial Engineering
EXAM MAP
Joint Entrance Examination