Civil Engineering MCQs

2965 MCQs  (Page 112 of 297)

The shear stress distribution for a fluid flowing in between the parallel plates, both at rest, is_______________?
A. Constant over the cross section
B. Parabolic distribution across the section
C. Zero at the mid plane and varies linearly with distance from mid plane
D. Zero at plates and increases linearly to midpoint
Stanton diagram is a______________?
A. Log-log plot of friction factor against reynolds number
B. Log-log plot of relative roughness against reynolds number
C. Semi-log plot of friction factor against reynolds number
D. Semi-log plot of friction factor against relative roughness
When an ideal fluid flows past a sphere________________?
A. Highest intensity of pressure occurs around the circumference at right angles to flow
B. Lowest pressure intensity occurs at front stagnation point
C. Lowest pressure intensity occurs at rear stagnation point
D. Total drag is zero
In which of the following the friction drag is generally larger than pressure drag?
A. A circular disc or plate held normal to flow
B. A sphere
C. A cylinder
D. An airfoil