Important Answers To Study On The Go

Important Answers To Study On The Go

Specific Weight- It is the weight per unit volume at a standard temperature and pressure. Denoted by 'w' or gamma. S.I unit is N/m^3.

Specific Gravity- It is the ratio of specific weight of fluid to the specific weight of standard fluid. It is denoted by S.

Specific Volume- It is the volume of fluid per unit weight. S.I unit is m^3/N. Denoted by 'Vs'.

Mass Density- It is the mass per unit volume. S.I unit is kg/m^3. Denoted by rho.

Viscosity- The property of fluid by which it offers resistance to deformation under the action of a shear force is called as viscosity.

Vapour Pressure- When the accumulated vapour of the liquid exerts a partial pressure on the liquid surface is called as vapour pressure.

Atmospheric Pressure- When the atmospheric air exerts a normal pressure upon all the surfaces with which it comes in contact is called as atmospheric pressure. Atmospheric pressure varies with altitude.

Gauge Pressure- It is the pressure which is measured above the atmospheric pressure.

Absolute Pressure- It is the pressure which is measured with reference to absolute vacuum pressure or zero pressure.

Vacuum Pressure- It is the pressure which is measured below the atmospheric pressure.

Total Pressure- It is a force exerted by static fluid on the surface in contact with the fluid. It is denoted by P.

Centre Of Pressure- It is the point at which the total pressure is suppose to act.

Centre Of Buoyancy- It is the point at which the force of buoyancy acts.

Metacentre Height- It is the distance between the meta-centre of floating body and the centre of gravity.