ANS:D - 2.00

The ratio of maximum velocity to average velocity of a viscous fluid through a circular pipe is a characteristic of the velocity profile within the pipe. For laminar flow in a circular pipe, the velocity profile is parabolic, and the maximum velocity occurs at the center of the pipe, while the average velocity is calculated across the entire cross-section of the pipe. For laminar flow in a circular pipe, the ratio of maximum velocity to average velocity is: V max/V avg=2 This means that the maximum velocity is twice the average velocity for laminar flow in a circular pipe. Therefore, among the options provided, the correct ratio is 2.00.