For a roll of radius R, the entering and exiting material thickness i – McqOptions

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1.	For a roll of radius R, the entering and exiting material thickness is h1 and h2 respectively. What will be the total arc of contact between roll and material?Δh=h1-h2
A.	R(Δh)
B.	R(√Δh)
C.	√(RΔh)
D.	R(Δh)2
Answer» D. R(Δh)2

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