Question

(Chapter 1) (Ans. 8.07x104 Pa.s) A concentric cylinder viscometer may be formed by rotating the inner member of a pair of closely fitting cylinders. For small clearances, a linear velocity profile maybe assumed in the liquid filling the annular clearance gap. A viscometer has an inner cylinder of 75 mm diameter and 150 mm height, with a clearance gap width of 0.02 mm. A torque of 0.021 N.m is required to turn the inner cylinder at 100 rpm. Determine the viscosity of the liquid in the clearance gap of the viscometer. Cord Pulley jo

Answer 1

EX Given D=75 mm = 75x10² m L= 150 mm = 150x103 m nce gap = 0.02 mm n = loorpm . уя по 60 = I x75x10*x100 60 V- 0.3927 mis A = TDL = TX 75x150 1166 A= 0.035 m Tora, ue = ror F = 0.021 c) *(tood X tooo) 0.56 m f =

= 0.56 *I 0.835. T = 15.84 N/m Now risco city (1) H= + du = 15.84 x 0.02 0.39x1000 M = 0.04 Xió4 Nasim = * = Please upvote my Ansuc?