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# GATE Mechanical 1994 Question

Calculate the bite angle when rolling plates $12mm$ thick using work rolls $600mm$ diameter and reducing the thickness by $3mm$

# GATE Mechanical 1996 Question

A wire of $0.1mm$ diameter is drawn from a rod of $15mm$ diameter dies giving reductions of $20\%$, $40\%$ and $80\%$ are available. For minimum error in the final size, the number of stages and reduction at each stage respectively would be
A
$3$ stages and $80\%$ reduction for all three stages
B
$4$ stages and $80\%$ reduction for first three stages followed by a finishing stage of $20\%$ reduction
C
$5$ stages and reduction of $80\%$, $80\%$, $40\%$, $40\%$, $20\%$ in sequence
D
None of the above

# GATE Mechanical 1998 Question

A strip with sectional area $150mm\,\, \times \,\,4.5mm$ is being rolled with $20\%$ reduction of area using $450mm$ diameter rollers. The angle subtended by the deformation zone at the roll center is (in radians)
$0.01$
$0.02$
$0.03$
$0.06$