Numerical (Water)

The closed tank in the fig. is at 200 C. If the pressure at point A is 96 Kpa absolute, what is the absolute pressure at point B? What percent error results from neglecting the specific weight of air? (Take sp wt of air = 0.0118 KN/m3)

The closed tank in the fig. is at 200 C. If the pressure at point A is 96 Kpa absolute, what is the absolute pressure at point B? What percent error results from neglecting the specific weight of air? (Take sp wt of air = 0.0118 KN/m3)

Problem Statement A closed tank is at \( 20°C \). If the pressure at point A is \( 96 \,

The closed tank in the fig. is at 200 C. If the pressure at point A is 96 Kpa absolute, what is the absolute pressure at point B? What percent error results from neglecting the specific weight of air? (Take sp wt of air = 0.0118 KN/m3) Read More »

A manometer connected to a pipe indicates a negative gauge pressure of 50mm of mercury. What is the absolute pressure in the pipe in N/m2 if the atmospheric pressure is 1 bar?

Problem Statement A manometer connected to a pipe indicates a negative gauge pressure of \( -50 \, \text{mmHg} \). What

A manometer connected to a pipe indicates a negative gauge pressure of 50mm of mercury. What is the absolute pressure in the pipe in N/m2 if the atmospheric pressure is 1 bar? Read More »

What would the pressure in kN/m2 be if the equivalent head is measured as 400mm of (a) mercury (sp gr 13.6) (b) water (c) oil specific weight 7.9 kN/m3 (d) a liquid of density 520 kg/m3?

Problem Statement What would the pressure in \( \text{kN/m}^2 \) be if the equivalent head is measured as \( 400

What would the pressure in kN/m2 be if the equivalent head is measured as 400mm of (a) mercury (sp gr 13.6) (b) water (c) oil specific weight 7.9 kN/m3 (d) a liquid of density 520 kg/m3? Read More »

Through a narrow gap of height h, a thin plate of large extent is pulled at a velocity V. On one side of the plate is oil of viscosity  and on the other side oil of viscosity . Calculate the position of the plate so that (a) the shear force in the two sides of the plate is equal, and (b) the pull required to drag the plate is minimum.

Problem Statement A thin plate is pulled at a velocity \( V \) through a narrow gap of height \(

Through a narrow gap of height h, a thin plate of large extent is pulled at a velocity V. On one side of the plate is oil of viscosity  and on the other side oil of viscosity . Calculate the position of the plate so that (a) the shear force in the two sides of the plate is equal, and (b) the pull required to drag the plate is minimum. Read More »

Distilled water stands in a glass tube of 10mm diameter at a height of 25mm. What is the true static height? Take surface tension of water = 0.074 N/m and angle of contact = 0.

Problem Statement Distilled water stands in a glass tube of 10mm diameter at a height of 25mm. What is the

Distilled water stands in a glass tube of 10mm diameter at a height of 25mm. What is the true static height? Take surface tension of water = 0.074 N/m and angle of contact = 0. Read More »

A disk of radius R rotates at an angular velocity ω inside an oil bath of viscosity μ. Assuming a linear velocity profile and neglecting shear on the outer disk edges, derive an expression for the viscous torque on the disk.

Problem Statement A disk of radius \( R \) rotates at an angular velocity \( \omega \) inside an oil

A disk of radius R rotates at an angular velocity ω inside an oil bath of viscosity μ. Assuming a linear velocity profile and neglecting shear on the outer disk edges, derive an expression for the viscous torque on the disk. Read More »

A 120mm circular disc rotates on a table separated by an oil of film of 2mm thickness. Find the viscosity of the oil if the torque required to rotate the disc at 60 rpm is 4×10-4 Nm. Assume the velocity gradient in the oil film to be linear.

Problem Statement A 120mm circular disc rotates on a table separated by an oil film of 2mm thickness. Find the

A 120mm circular disc rotates on a table separated by an oil of film of 2mm thickness. Find the viscosity of the oil if the torque required to rotate the disc at 60 rpm is 4×10-4 Nm. Assume the velocity gradient in the oil film to be linear. Read More »

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