ISRO Scientist or Engineer Mechanical 2014

A liquid of density 1200 kg/m$$^3$$ is flowing steadily through a tube of varying cross section as shown below.Thecross section at point A is 1 cm$$^2$$ and at Bis 20 mm$$^2$$. The points A and B are in the same horizontal plane. The speed of liquid at point A is 10 cm/sec. The difference of pressure at A and B is

A wooden plank ( sp. gravity = 0.5) of 1 m $$\times$$ 1m $$\times$$ 0.5 m floats in water with 1.5 kN load on it with 1 mx 1m surface horizontal. The depth of plank lying below water surface shall be

Circulation is defined as the line integral of tangential component of velocity about a

Unstable equilibrium of a floating body implies

Viscosity has the dimension of

Which of the following flow is rotational (where u and v are velocity components in x and y directions respectively)

A pump running at 1000 rpm consumes 1KW and generates head Of 10m of water. When it is operated at 2000rpm, its power consumption and head generated would be

For irrotational fluid flow curl of velocity vector is

In the figure shown below, the relative velocity of link 1 with respect to link 2 is 15 m/s. The link 2 rotates at a constant speed of 150 rpm. The magnitude of coriolis component of acceleration of link 1 is

An oil of kinematic viscosity of 0.5 stokes flow through a pipe of 20 cm diameter. What is the velocity if the flow is critical?