Synchronous Motors
The operating speed of a synchronous motor can be changed to new fixed value by

changing the supply voltage
changing frequency
changing the load
using brakes

ANSWER DOWNLOAD EXAMIANS APP

Synchronous Motors
Synchronous capacitor is

None of the listed here
An over excited synchronous motor driving mechanical load
An ordinary static capacitor bank
An over excited synchronous motor running without mechanical load

ANSWER DOWNLOAD EXAMIANS APP