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
Theory of Machines
Machine Design
Fluid Mechanics
Thermodynamics
Casting
Joining of Materials
Metal Forming
Machine Tools and Machining
Metrology
Industrial Engineering
EXAM MAP
Medical
NEET