Closed transition starting means:

Closed transition starting means:

• A. the machine is started with the inlet vanes closed
• B. the starter has timed-closed contacts
• C. the motor is never disconnected from the line during starting
• D. the motor is only temporarily disconnected during start-up

Answer: (C)

Closed transition starting keeps the motor on the power line during the entire start, so there is no interruption of current as it accelerates. This is achieved with a switching arrangement that either provides a brief parallel path or coordinates the transfer so the motor never loses connection to the supply. The other ideas don’t fit: inlet vanes refer to a different system, a timed-closed contact setup doesn’t define continuous connection, and temporary disconnection describes open transition, not closed transition.

Closed transition starting keeps the motor on the power line during the entire start, so there is no interruption of current as it accelerates. This is achieved with a switching arrangement that either provides a brief parallel path or coordinates the transfer so the motor never loses connection to the supply. The other ideas don’t fit: inlet vanes refer to a different system, a timed-closed contact setup doesn’t define continuous connection, and temporary disconnection describes open transition, not closed transition.