The Fourier number (N) is defined as

The thermal diffusivity of a material is defined as

When heat is transferred by a chain of molecules from the hot area of an object to a colder area, the process of heat transfer is called

Cavitation in centrifugal pumps is caused by

For a specific impeller diameter, fixed impeller speed of a centrifugal pump, and constant density,

Select the correct relation for centrifugal pumps at equal efficiencies.