1
GATE PI 2016
Numerical
+1
-0
The ratio of press force required to punch a square hole of $$30$$ $$mm$$ side in a $$1$$ $$mm$$ thick aluminium sheet to that needed to punch a square hole of $$60$$ $$mm$$ side in a $$2$$ $$mm$$ thick aluminium sheet is________.
Your input ____
2
GATE PI 2013
MCQ (Single Correct Answer)
+1
-0.3
Circular blanks of $$10mm$$ diameter are punched from an aluminium sheet of $$2$$ $$mm$$ thickness. The shear strength of aluminium is $$80$$ $$MPa.$$ The minimum punching force required in $$kN$$ is
A
$$2.57$$
B
$$3.29$$
C
$$5.03$$
D
$$6.33$$
3
GATE PI 2012
MCQ (Single Correct Answer)
+1
-0.3
Match the following metal forming processes with their associated stresses in the Work-piece GATE PI 2012 Metal Forming - Sheet Metal Forming Processes Question 26 English
A
$$1 - S,\,\,2 - P,\,\,3 - Q,\,\,4 - R$$
B
$$1 - P,\,\,2 - Q,\,\,3 - S,\,\,4 - R$$
C
$$1 - S,\,\,2 - P,\,\,3 - R,\,\,4 - Q$$
D
$$1 - P,\,\,2 - R,\,\,3 - Q,\,\,4 - S$$
4
GATE PI 2003
MCQ (Single Correct Answer)
+1
-0.3
Which one is not a method of reducing cutting forces to prevent the overloading of press
A
providing shear on die
B
providing shear on punch
C
increasing the clearance
D
stepping punches
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