Synchronous Motors The back e.m.f. of a synchronous motor depends on All of these load speed load angle All of these load speed load angle ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Dust and dirt accumulation on motor winding will result in Increased core losses Rise in winding temperature Shorting of coils Eddy current flow Increased core losses Rise in winding temperature Shorting of coils Eddy current flow ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The rotor of a synchronous motor is Identical to that of a dc motor None of the listed here Nonsalient pole type Salient pole type Identical to that of a dc motor None of the listed here Nonsalient pole type Salient pole type ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The minimum armature current of the synchronous motor corresponds to operation at 0.707 power factor lagging 0.707 power factor leading unity power factor zero power factor leading 0.707 power factor lagging 0.707 power factor leading unity power factor zero power factor leading 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 applied voltage By changing the supply frequency By interchanging any two phases By changing the load By changing the applied voltage By changing the supply frequency ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When a synchronous motor is on no load, the torque angle is about ________ 30° electrical 45° electrical 90° electrical 0° electrical 30° electrical 45° electrical 90° electrical 0° electrical ANSWER DOWNLOAD EXAMIANS APP
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