1
GATE PI 2003
MCQ (Single Correct Answer)
+5
-1.5
In a single pass flat rolling operation, a $$400$$ $$mm$$ wide steel strip having a thickness of $$10mm$$ is reduced to $$8$$ $$mm$$ by using a roll of $$600mm$$ diameter.

Considering the situation for a maximum draft of the process, what is the coefficient of friction?

A
$$0.082$$
B
$$0.007$$
C
$$17.3$$ $$mm$$
D
$$49$$ $$mm$$
2
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
3
GATE PI 2003
MCQ (Single Correct Answer)
+1
-0.3
GATE PI 2003 Metal Forming - Sheet Metal Forming Processes Question 29 English
A
$$P - 3,\,\,Q - 1,\,\,R - 2$$
B
$$P - 1,\,\,Q - 2,\,\,R - 4$$
C
$$P - 4,\,\,Q - 3,\,\,R - 3$$
D
$$P - 2,\,\,Q - 4,\,\,R - 1$$
4
GATE PI 2003
MCQ (Single Correct Answer)
+2
-0.6
A hydraulic press is used to produce circular blanks of $$10$$ $$mm$$ diameter from a sheet of $$2$$ $$mm$$ thickness. If the shear strength of the sheet material is $$400$$ $$N/m{m^2},$$ the force required for producing a circular blank is
A
$$8$$ $$kN$$
B
$$25.13$$ $$kN$$
C
$$31.42$$ $$kN$$
D
$$125.66$$ $$kN$$
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