Synchronous Motors Synchronous motor always run at None of the listed here More than synchronous speed Less than synchronous speed The synchronous speed None of the listed here More than synchronous speed Less than synchronous speed The synchronous speed ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor develops maximum power when load angle is 120° 45° 60° 90° 120° 45° 60° 90° ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor connected to infinite bus-bars has at constant full load, 100% excitation and unity power factor. On changing the excitation only, the armature current will have leading power factor with over-excitation no change of power factor lagging power factor with over-excitation leading power factor with under-excitation leading power factor with over-excitation no change of power factor lagging power factor with over-excitation leading power factor with under-excitation ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors While running, a synchronous motor is compelled to run at synchronous speed because of _______ Magnetic locking between stator and rotor poles Damper winding in its pole faces Compulsion due to lenz's law Induced emf in rotor field winding by stator flux Magnetic locking between stator and rotor poles Damper winding in its pole faces Compulsion due to lenz's law Induced emf in rotor field winding by stator flux ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous machine with large air gap has a small value of inherent regulation a higher synchronizing power which makes the machine less sensitive to load variations all of the listed here a higher value of stability limit a small value of inherent regulation a higher synchronizing power which makes the machine less sensitive to load variations all of the listed here a higher value of stability limit ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The maximum constant load torque under which a synchronous motor will pull into synchronism at rated rotor supply voltage and frequency is known as pull-out torque pull-up torque None of these pull-in torque pull-out torque pull-up torque None of these pull-in torque ANSWER DOWNLOAD EXAMIANS APP
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