the self control of a synchronous motor is done using an
inverter fed through a dc link.speed is controlled by varying the
output frequency of the inverter by controlling the dc link
voltage
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True synchronous mode and self control mode
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No, frame delimiting is a primary responsibility of the Logical
Link Control sublayer of the Data Link Layer..
Data link layer exists of 2 sublayers; Media Acces control
Sublayer (MAC) & Logical Link Control sublayer (LLC)
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No. It is the Data Link layer that IEEE has divided into two
sublayers. The Data Link layers are Logical Link Control and Media
Access Control.