Unstable equilibrium and

Stable equilibrium

Find the volume of the water displaced and position of centre of buoyancy for a wooden block of width 3 m and depth 2 m, when it floats horizontally in water. The density of wooden block is 700 kg/ms³ and its length 7 m.

Prove that the vertical component of the resultant force on submerged curved surface is equal to the weight of the liquid supported by the curved surface.

A rectangular plane surface is 1.5 m wide and 4 m deep. It lies vertically in water. Determine the total pressure and position of the centre of pressure on the plane surface when upper edge is horizontal and (a) coincides with free water surface (b) 3 m below the free water surface.

What are the different types of mechanical pressure gauges? With the help of a neat sketch explain the working of a Bourdon's gauge.

Explain atmospheric pressure. What is the value of atmospheric pressure head in terms of mercury column and in terms of water column?

Find the depth of oil of specific gravity of 0.82 which produces an intensity of pressure equal to 2.5 kN/m². Also find the pressure head in terms of water and mercury.

Laminar and turbulent flow.

Rotational and irrotational flow and

Uniform and non-uniform flow

 Steady flow and unsteady flow

 State the Newton's law of viscosity. Explain the importance of viscosity in fluid motion. What is the effect of temperature on viscosity of water and that of air.

The dynamic viscosity of an oil, used for lubrication between a shaft and sleeve is 6 poise. The shaft is of diameter 0.5m and rotates at 210 rpm. Calculate the power lost in the bearing for a sleeve length of 90 mm. The thickness of the oil film is 1.4 mm.

A certain mass of a liquid has a volume of 5 m 3 and a weight of 39240. Find the specific weight, specific mass and specific gravity of the liquid.

Explain, in detail the process of anaerobic digestion with a neat sketch.

Discuss, in detail the horizontal type of wind turbine along with its advantages and disadvantages.

What is solar drying and its types? Explain with neat sketches wherever possible.

Explain in detail the first generation of solar cells.

Describe in detail any two solar radiation measuring instruments.