Synchronous Motors The armature current of a synchronous motor will be minimum for ______ power factor. 0.8 lagging 0.8 leading Unity None of the listed here 0.8 lagging 0.8 leading Unity None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When a synchronous motor is on no load, the torque angle is about ________ 45° electrical 0° electrical 90° electrical 30° electrical 45° electrical 0° electrical 90° electrical 30° electrical ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In a synchronous motor, the maximum power developed depends on all of the following except rotor excitation maximum value of coupling angle supply voltage direction of rotation rotor excitation maximum value of coupling angle supply voltage direction of rotation 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 supply frequency By interchanging any two phases By changing the load By changing the applied voltage By changing the supply frequency By interchanging any two phases By changing the load By changing the applied voltage ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When a unity pf synchronous motor is operated at a leading pf, it results in _______ More than rated rotor current None of the listed here More than rated horseppwer output Less than rated horsepower output More than rated rotor current None of the listed here More than rated horseppwer output Less than rated horsepower output ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors If a synchronous motor is operating at a supply frequency of 50 cycles/second, then, rotor revolves at ______ 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 100 cycles/second ANSWER DOWNLOAD EXAMIANS APP
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