Synchronous Motors The ratio of starting torque to running torque in a synchronous motor is Two Infinity One Zero Two Infinity One Zero ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor with large air gap has A higher value of stability limit A higher synchronizing power which makes the machine less sensitive to load variations A small value of inherent regulation All of the listed here A higher value of stability limit A higher synchronizing power which makes the machine less sensitive to load variations A small value of inherent regulation All of the listed here ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When the field of a synchronous motor is under-excited, the power factor will be lagging unity zero leading lagging unity zero leading ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors As the load is applied to a synchronous motor, the motor takes more armature current because The rotor strengthens the rotating field causing more motor current The rotor by shifting its phase backward causes motor to take more current The back e.m.f. decreases causing an increase in motor current The increased load has to take more current The rotor strengthens the rotating field causing more motor current The rotor by shifting its phase backward causes motor to take more current The back e.m.f. decreases causing an increase in motor current The increased load has to take more current ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The direction of rotation of a synchronous motor can be reversed by reversing, Polarity of rotor poles None of the listed here Supply phase sequence Current to field winding Polarity of rotor poles None of the listed here Supply phase sequence Current to field winding ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor is a ______ motor. Singly fed Variable speed Variable pf None of the listed here Singly fed Variable speed Variable pf None of the listed here ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS