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How the size of electic machine vary with the sped?
Between slow and fast running machines of equal ratings,
which one is more economical to design?

How the size of electic machine vary with the sped? Between slow and fast running machines of equal..

Answer / iamdon

With the increase in speed, the size of the machine reduces.

Fast running machines are cheaper and more economical to
design.However the maximum speed is limited by the
mechanical stress in the core.

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