Synchronous Motors Which of the following motors is non self starting? Dc series motor Synchronous motor Squirrel cage induction motor Wound rotor induction motor Dc series motor Synchronous motor Squirrel cage induction motor Wound rotor induction motor 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 by shifting its phase backward causes motor to take more current The increased load has to take more current The rotor strengthens the rotating field causing more motor current The back e.m.f. decreases causing an increase in motor current The rotor by shifting its phase backward causes motor to take more current The increased load has to take more current The rotor strengthens the rotating field causing more motor current ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The back emf in the stator of a synchronous motor depends on Rotor excitation Flux density Rotor speed None of the listed here Rotor excitation Flux density Rotor speed None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor develop maximum power when load angle is 90° 60° 45° 120° 90° 60° 45° 120° ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When load on an over-excited or under excited synchronous motor is increased, rate of change of its armature current as compared with that of power factor is twice equal more less twice equal more less ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When the synchronous motor runs at synchronous speed, the voltage induced in the damper winding is _____ Maximum Zero minimum None of the listed here Maximum Zero minimum None of the listed here ANSWER DOWNLOAD EXAMIANS APP
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