Synchronous Motors If a synchronous motor is operating at a supply frequency of 50 cycles/second, then, rotor revolves at ______ 100 cycles/second 25 cycles/ second None of the listed here 50 cycles/second 100 cycles/second 25 cycles/ second None of the listed here 50 cycles/second ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Power factor of a synchronous motor is unity when The armature current is minimum The armature current is zero The armature current is maximum None of the listed here The armature current is minimum The armature current is zero The armature current is maximum None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The shaft of synchronous motor is made of Mild steel Chrome steel Stainless steel Alcino Mild steel Chrome steel Stainless steel Alcino ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When the field of a synchronous motor is under-excited, the power factor will be unity zero leading lagging unity zero leading lagging 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 interchanging any two phases 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 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 None of these pull-in torque pull-out torque pull-up torque None of these pull-in torque pull-out torque pull-up torque ANSWER DOWNLOAD EXAMIANS APP
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