An opening roller in blowroom with 100 cm length, 38 cm diameter and 2 teeth per cm2 is rotating at an angular velocity of 400 rpm to deliver fibre tufts

Q. An opening roller in blowroom with 100 cm length, 38 cm diameter and 2 teeth per cm² is rotating at an angular velocity of 400 rpm to deliver fibre tufts at a production rate of 500 kg/h. The intensity of opening (fibre mass in mg per tooth) of the opening roller approximately is

(A) 0.44         

(B) 0.87         

(C) 1.74         

(D) 2.74

Ans: 0.87