Question

Define a machine. how the machine elements are classified.

Answer 1

Machine is the devise that contains both stationary parts and moving parts to generate mechanical energy.Machine elements are classified as
1) General purpose element
2)Special purpose element
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Hope this help u :)

Answer 2

A machine is a device by which we can either overcome a large resistive force at some point by applying a small force at a convenient point and in desired direction or by which we can obtain a gain in speed.