GATE (TF) Textile 2020 Question Paper Solution | GATE/2020/TF/24

Question 24 (Textile Engineering & Fibre Science)

A padding mangle is processing a fabric at 1320 m/h. The bottom bowl of the mangle is rotating at 25 rpm. Assuming zero slippage at the nip, the diameter (cm) of this bowl is __28.00 to 29.00__.

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Given in the question:
Padding mangle speed(v)=1320 m/h
v=1320/60 meter/min
v=22 m/min

Revolution speed of bottom bowl of mangle(n)=25 rev/min(rpm)

Diameter of the bowl(D)=?

Calculation by formula:

Padding mangle speed(v)=\pi x Diameter of bowl x revolution speed of bowl(n)

22=3.14 x D X 25

D=0.2802 meter

D=0.2802 x 100 cm

D=28.02 cm (Answer)

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