Synchronous Motors In a synchronous motor, the maximum power developed depends on all of the following except direction of rotation supply voltage maximum value of coupling angle rotor excitation direction of rotation supply voltage maximum value of coupling angle rotor excitation ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor develops maximum power when load angle is 60° 120° 90° 45° 60° 120° 90° 45° ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The pull out torque of a practical synchronous motor will occur when the torque angle is about _____ 30° 75° 0° 45° 30° 75° 0° 45° ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors As the load is applied to a synchronous motor, the motor takes more armature current because The back e.m.f. decreases causing an increase in motor current The rotor strengthens the rotating field causing more motor current The increased load has to take more current The rotor by shifting its phase backward causes motor to take more current The back e.m.f. decreases causing an increase in motor current The rotor strengthens the rotating field causing more motor current The increased load has to take more current The rotor by shifting its phase backward causes motor to take more current ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In a synchronous motor, the magnitude of stator back emf depends on _____ Speed of the rotor Both the speed and rotor flux Load on the motor Dc excitation only Speed of the rotor Both the speed and rotor flux Load on the motor Dc excitation only ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The mechanical power developed by a synchronous motor is independent of _________. Applied stator voltage Field excitation Torque angle Speed Applied stator voltage Field excitation Torque angle Speed ANSWER DOWNLOAD EXAMIANS APP
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