Hydraulics And Fluid Mechanics Set 3

Select the correct statement

A ship whose hull length is 100 m is to travel at 10 m/sec. For dynamic similarity, at what velocity should a 1:25 model be towed through water ?

For a sphere of radius 15 cm moving with a uniform velocity of 2 m/sec through a liquid of specific gravity 0.9 and dynamic viscosity 0.8 poise, the Reynolds number will be

Free surface of a liquid behaves like a sheet and tends to contract to smallest possible area due to the

The discharge over a broad crested weir is maximum when the depth of flow is (where H is the available head)

The line of action of the buoyant force acts through the centroid of the

Two pipe systems are said to be equivalent when

A model of torpedo is tested in a towing tank at a velocity of 25 m/sec. The prototype is expected to attain a velocity of 5 m/sec. What model scale has been used ?

A fluid is said to be ideal, if it is

The horizontal component of force on a curved surface is equal to the