Electromechanic includes electric engineering and mechanic engineering. .For example, the manual switch is a component. The electric signal generates mechanical movement. On the other hand, the mechanical movement can generate electric signal too. This is about electromagnetic theory. The DC motor can generate power by mechanical movement (as a power generator) or provide power to mechanical movement(as a motor).
ITECH instruments can be widely used in these applications. Take the example of IT6000C/IT6500C,they have excellent performance in the start test of motor.