Synchronous Motors The mechanical power developed by a synchronous motor is ______ stator voltage. Directly proportional to square of Independent of Directly proportional to Invesely proportional to Directly proportional to square of Independent of Directly proportional to Invesely proportional to ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The rotor of synchronous motor is excited with direct current when the motor _____ None of the listed here Approches synchronous speed Is at standstill Approches half synchronous speed None of the listed here Approches synchronous speed Is at standstill Approches half synchronous speed ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In a synchronous motor, the rotor copper loss are met by ______ Motor input Dc source Supply lines Armature input Motor input Dc source Supply lines Armature input 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-up torque pull-in torque None of these pull-out torque pull-up torque pull-in 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 load By changing the supply frequency By changing the applied voltage By interchanging any two phases By changing the load By changing the supply frequency By changing the applied voltage By interchanging any two phases ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The ratio of starting torque to running torque in a synchronous motor is One Infinity Zero Two One Infinity Zero Two ANSWER DOWNLOAD EXAMIANS APP
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