Synchronous Motors In order to to reverse the direction of a synchronous motor, _______ None of the listed here Change supply frequency Interchange any two stator lines Reduce dc field excitation to zero None of the listed here Change supply frequency Interchange any two stator lines Reduce dc field excitation to zero ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The induced e.m.f. in a synchronous motor working on leading power factor will be equal to the supply voltage less than the supply voltage None of these more than the supply voltage equal to the supply voltage less than the supply voltage None of these more than the supply voltage 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 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 ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor can operate at Leading power factor Lagging, leading and unity power factors Lagging power factor only Unity power factor only Leading power factor Lagging, leading and unity power factors Lagging power factor only Unity power factor only ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The pull out torque of a practical synchronous motor will occur when the torque angle is about _____ 45° 75° 0° 30° 45° 75° 0° 30° ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In a synchronous motor, the maximum power developed depends on all of the following except supply voltage direction of rotation rotor excitation maximum value of coupling angle supply voltage direction of rotation rotor excitation maximum value of coupling angle ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS