IGNOU BEY 3 SOLVED ASSIGNMENT

Ques 1.

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.

Ques 2.

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.

Ques 3.

 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.

Ques 4.

 Steady flow and unsteady flow

Ques 5.

Uniform and non-uniform flow

Ques 6.

Rotational and irrotational flow and

Ques 7.

Laminar and turbulent flow.

Ques 8.

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.

Ques 9.

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

Ques 10.

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

Ques 11.

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.

Ques 12.

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.

Ques 13.

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.

Ques 14.

Stable equilibrium

Ques 15.

Unstable equilibrium and

Ques 16.

Neutral equilibrium

Ques 17.

Derive an expression for velocity distribution for laminar flow through a circular pipe. Show that the friction coefficient is equal to 16/Re where Re is the Reynolds number.

Ques 18.

 In two dimension flow = 3xy. Prove that the flow is irrotational. Also determine the corresponding velocity potential.

Ques 19.

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.

Ques 20.

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.

Ques 21.

 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.

Ques 22.

 Steady flow and unsteady flow

Ques 23.

Uniform and non-uniform flow

Ques 24.

Rotational and irrotational flow and

Ques 25.

Laminar and turbulent flow.

Ques 26.

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.

Ques 27.

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

Ques 28.

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

Ques 29.

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.

Ques 30.

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.

Ques 31.

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.

Ques 32.

Stable equilibrium

Ques 33.

Unstable equilibrium and

Ques 34.

Neutral equilibrium

Ques 35.

Derive an expression for velocity distribution for laminar flow through a circular pipe. Show that the friction coefficient is equal to 16/Re where Re is the Reynolds number.

Ques 36.

 In two dimension flow = 3xy. Prove that the flow is irrotational. Also determine the corresponding velocity potential.

Ques 37.

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.

Ques 38.

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.

Ques 39.

 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.

Ques 40.

 Steady flow and unsteady flow

Ques 41.

Uniform and non-uniform flow

Ques 42.

Rotational and irrotational flow and

Ques 43.

Laminar and turbulent flow.

Ques 44.

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.

Ques 45.

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

Ques 46.

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

Ques 47.

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.

Ques 48.

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.

Ques 49.

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.

Ques 50.

Stable equilibrium

Ques 51.

Unstable equilibrium and

Ques 52.

Neutral equilibrium

Ques 53.

Derive an expression for velocity distribution for laminar flow through a circular pipe. Show that the friction coefficient is equal to 16/Re where Re is the Reynolds number.

Ques 54.

 In two dimension flow = 3xy. Prove that the flow is irrotational. Also determine the corresponding velocity potential.

Ques 55.

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.

Ques 56.

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.

Ques 57.

 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.

Ques 58.

 Steady flow and unsteady flow

Ques 59.

Uniform and non-uniform flow

Ques 60.

Rotational and irrotational flow and

Ques 61.

Laminar and turbulent flow.

Ques 62.

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.

Ques 63.

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

Ques 64.

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

Ques 65.

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.

Ques 66.

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.

Ques 67.

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.

Ques 68.

Stable equilibrium

Ques 69.

Unstable equilibrium and

Ques 70.

Neutral equilibrium

Ques 71.

Derive an expression for velocity distribution for laminar flow through a circular pipe. Show that the friction coefficient is equal to 16/Re where Re is the Reynolds number.

Ques 72.

 In two dimension flow = 3xy. Prove that the flow is irrotational. Also determine the corresponding velocity potential.

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