Synchronous Motors When a synchronous motor is on no load, the torque angle is about ________ 90° electrical 30° electrical 0° electrical 45° electrical 90° electrical 30° electrical 0° electrical 45° electrical ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A 50 Hz synchronous motor runs at 200 rpm. The number of salient poles on the rotor are______ 16 None of the listed here 36 30 16 None of the listed here 36 30 ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The speed of a synchronous motor can be changed by varying _______ Mechanical load Field excitation Supply frequency None of the listed here Mechanical load Field excitation Supply frequency None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Leading power factor synchronous motors cost ______ the unity pf motors. About the same as More than None of the listed here Less than About the same as More than None of the listed here Less than ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor is cheaper than 3-phase induction motor for _____ High speed, high output None of the listed here High speed, low output Low speed, high output High speed, high output None of the listed here High speed, low output Low speed, high output ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors While running, a synchronous motor is compelled to run at synchronous speed because of _______ Compulsion due to lenz's law Induced emf in rotor field winding by stator flux Damper winding in its pole faces Magnetic locking between stator and rotor poles Compulsion due to lenz's law Induced emf in rotor field winding by stator flux Damper winding in its pole faces Magnetic locking between stator and rotor poles ANSWER DOWNLOAD EXAMIANS APP
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