Electrical Machines The frequency of voltage generated by an alternator having 8 poles and rotating at 250 rpm is 50 Hz. 16.67 Hz. 60 Hz. 25 Hz. 50 Hz. 16.67 Hz. 60 Hz. 25 Hz. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For the same power output rating and full load speed, the motor will have poorest starting torque, is Series. Cummulative compound. Shunt. Differential compound. Series. Cummulative compound. Shunt. Differential compound. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An unexcited single phase synchronous motor is universal motor. reluctance motor. AC series motor. repulsion motor. universal motor. reluctance motor. AC series motor. repulsion motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Field weakening method is also called as-----------? constant voltage control constant torque control constant current control constant power control constant voltage control constant torque control constant current control constant power control ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The air gap between the yoke and armature is dc machine is kept very small to achieve a stronger magnetic field. to avoid locking of the armature. to avoid over heating. All of these to achieve a stronger magnetic field. to avoid locking of the armature. to avoid over heating. All of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature reaction mmf in a DC machines has a form of triangular. sinusoidal. trapezoidal. rectangular. triangular. sinusoidal. trapezoidal. rectangular. ANSWER DOWNLOAD EXAMIANS APP
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