Hydraulics & Fluid Mechanics Choose the wrong statement

when in equilibrium, fluids can sustain shear forces
fluids are capable of flowing
when in equilibrium, fluids cannot sustain tangential forces
fluids conform to the shape of the con-taining vessels

Hydraulics & Fluid Mechanics For laminar flow in a pipe of circular cross-section, the Darcy’s friction factor f is

inversely proportional to Reynolds number and directly proportional to pipe wall roughness
directly proportional to pipe wall roughness and independent of Reynolds number
directly proportional to Reynolds number and independent of pipe wall roughness
inversely proportional to Reynolds number and indpendent of pipe wall roughness

675
300
600
337.5

25 m/sec
10 m/sec
2 m/sec
50 m/sec

Hydraulics & Fluid Mechanics If a sphere of diameter 1 cm falls in castor oil of kinematic viscosity 10 stokes, with a terminal velocity of 1.5 cm/sec, the coefficient of drag on the sphere is

between 1 and 100
160
200
less than 1

Hydraulics & Fluid Mechanics The resultant of all normal pressures acts

at metacentre
at center of pressure
at e.g. of body
vertically upwards