Synchronous Motors If the field of a synchronous motor is underexcited, the power factor will be unity leading zero lagging unity leading zero lagging ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The ratio of starting torque to running torque in a synchronous motor is Zero Two Infinity One Zero Two Infinity One ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The maximum constant load torque under which a synchronous motor will pull into synchronism at rated rotor supply voltage and frequency is known as pull-in torque pull-up torque None of these pull-out torque pull-in torque pull-up torque None of these pull-out torque ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors By which of the following methods the constant speed of a synchronous motor can be changed to new fixed value ? By changing the applied voltage By interchanging any two phases By changing the supply frequency By changing the load By changing the applied voltage By interchanging any two phases By changing the supply frequency By changing the load ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors An important advantage of a synchronous motor over wound round induction motor is that its speed is independent of supply frequency its speed may be controlled more easily its power factor may be varied at will None of these its speed is independent of supply frequency its speed may be controlled more easily its power factor may be varied at will None of these ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A rotary converter can also be run as a Dc compound generator Dc shunt generator Dc series generator Synchronous motor Dc compound generator Dc shunt generator Dc series generator Synchronous motor ANSWER DOWNLOAD EXAMIANS APP
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