Synchronous Motors When the synchronous motor is pulled out of synchronism, the stator current _______ Becomes zero Is decreased too much Remains unchanged Is increased too much Becomes zero Is decreased too much Remains unchanged Is increased too much ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The mechanical power developed by a synchronous motor is ______ stator voltage. Directly proportional to square of Invesely proportional to Directly proportional to Independent of Directly proportional to square of Invesely proportional to Directly proportional to Independent of ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In a synchronous motor, the rotor copper loss are met by ______ Dc source Motor input Supply lines Armature input Dc source Motor input Supply lines Armature input ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The efficiency of a properly designed synchronous motor will usually fall in range 60 to 70% 75 to 80% 99 to 99.5% 85 to 95% 60 to 70% 75 to 80% 99 to 99.5% 85 to 95% ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A three phase synchronous motor will have No slip rings One slip rings Two slip rings Three slip rings No slip rings One slip rings Two slip rings Three slip rings ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In a synchronous motor, the maximum power developed depends on all of the following except direction of rotation maximum value of coupling angle supply voltage rotor excitation direction of rotation maximum value of coupling angle supply voltage rotor excitation ANSWER DOWNLOAD EXAMIANS APP
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