1
GATE PI 1991
MCQ (Single Correct Answer)
+1
-0.3
In progressive die (for sheet metal), spring loaded stripper plate is used to clamps the stock until:
A
The punch penetrates twice the stock thickness
B
It removes wrinkles on the product edges
C
Automatic feeder plate releases it
D
Punch is completely withdrawn from the stock
2
GATE PI 1991
Fill in the Blanks
+1
-0
In .................. A ................. operation the diameter of the desired hole will be smaller than the diameter of the .................... B ......................

A. blanking / piercing
B. punch / die

3
GATE PI 1991
MCQ (Single Correct Answer)
+1
-0.3
A cup of $$10$$ $$cm$$ height and $$5$$ $$cm$$ diameter is to be made from a sheet metal of $$2mm$$ thickness. The number of deductions necessary will be
A
$$1$$
B
$$2$$
C
$$3$$
D
$$4$$
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