Question

two geometrically similar units are homologous if they have

Answer 1

The rule of comparability is an outcome of nature for any physical marvel.

By making utilization of this rule, it ends up conceivable to foresee the execution of one machine from the consequences of tests on a geometrically comparable machine, and furthermore to anticipate the execution of a similar machine under conditions not quite the same as the test conditions.

Answer 2

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Machines which are geometrically similar form a homologous series. ... If two machines are kinematically similar, the velocity vector diagrams at inlet and outlet of the rotor of one machine must be similar to those of the other.