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Fluid Mechanics

Free surface of a liquid tends to contract to the smallest possible area due to force of_______________?

August 16, 2021January 29, 2019 by admin
Free surface of a liquid tends to contract to the smallest possible area due to force of_______________?

A. surface tension
B. viscosity
C. friction
D. cohesion
E. adhesion

Categories Fluid Mechanics

Falling drops of water become spheres due to the property of ____________________?

August 16, 2021January 29, 2019 by admin
Falling drops of water become spheres due to the property of ____________________?

A. adhesion
B. cohesion
C. surface tension
D. viscosity
E. compressibility

Categories Fluid Mechanics

The total pressure on the surface of a vertical sluice gate 2 m x 1 m with its top 2 m surface being 0.5 m below the water level will be ________________?

August 16, 2021January 29, 2019 by admin
The total pressure on the surface of a vertical sluice gate 2 m x 1 m with its top 2 m surface being 0.5 m below the water level will be ________________?

A. 500 kg
B. 1000 kg
C. 1500 kg
D. 2000 kg
E. 4000 kg

Categories Fluid Mechanics

The buoyancy depends on___________________?

August 16, 2021January 29, 2019 by admin
The buoyancy depends on___________________?

A. mass of liquid displaced
B. viscosity of the liquid
C. pressure of the liquid displaced
D. depth of immersion
E. none of the above

Categories Fluid Mechanics

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

August 16, 2021January 29, 2019 by admin
Free surface of a liquid behaves like a sheet and tends to contract to smallest possible area due to the_________________?

A. force of adhesion
B. force of cohesion
C. force of friction
D. force of diffusion
E. none of die above

Categories Fluid Mechanics

Surface energy per unit area of a surface is numerically equal to _____________________?

August 16, 2021January 29, 2019 by admin
Surface energy per unit area of a surface is numerically equal to _____________________?

A. atmospheric pressure
B. surface tension
C. force of adhesion
D. force of cohesion
E. viscosity

Categories Fluid Mechanics

The difference of pressure between the inside and outside of a liquid drop is _______________?

August 16, 2021January 29, 2019 by admin
The difference of pressure between the inside and outside of a liquid drop is _______________?

A. p = Txr
B. p = T/r
C. p = T/2r
D. p = 2T/r
E. none of the above

Categories Fluid Mechanics

To avoid vaporisation in the pipe line, the pipe line over the ridge is laid such that it is not more than____________________?

August 16, 2021January 29, 2019 by admin
To avoid vaporisation in the pipe line, the pipe line over the ridge is laid such that it is not more than____________________?

A. 2.4 m above the hydraulic gradient
B. 6.4 m above the hydraulic gradient
C. 10.0 m above the hydraulic gradient
D. 5.0 above the hydraulic gradient
E. none of the above

Categories Fluid Mechanics

The vapour pressure over the concave surface is______________________?

August 16, 2021January 29, 2019 by admin
The vapour pressure over the concave surface is______________________?

A. less man the vapour pressure over the plane surface
B. equal to the vapour pressure over the plane surface
C. greater than the vapour pressure over the plane surface
D. zero
E. none of the above

Categories Fluid Mechanics

The process of diffusion of one liquid into the other through a semi-permeable membrane is called_______________________?

August 16, 2021January 29, 2019 by admin
The process of diffusion of one liquid into the other through a semi-permeable membrane is called_______________________?

A. viscosity
B. osmosis
C. surface tension
D. cohesion
E. diffusivity

Categories Fluid Mechanics
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