Electrical Machines If the applied voltage to a dc machine is 230 V, then the back emf, for maximum power developed, is 460 V 200 V 230 V 115 V 460 V 200 V 230 V 115 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An induction motor having 8 poles runs at 727.5 rpm. If the supply frequency is 50Hz, the emf in the rotor will have a frequency of 2.5Hz 1.5Hz 48.5Hz 51.5Hz 2.5Hz 1.5Hz 48.5Hz 51.5Hz ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If an additional resistance is connected in series with a DC series motor operating at rated speed, the speed of the motor will Oscillate around the normal speed. Reduce. Remain unaltered. Increase. Oscillate around the normal speed. Reduce. Remain unaltered. Increase. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following motor has more stability cylindrical motor None of these both motors has same stability salient pole motor cylindrical motor None of these both motors has same stability salient pole motor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature reaction mmf in a DC machines has a form of trapezoidal. sinusoidal. rectangular. triangular. trapezoidal. sinusoidal. rectangular. triangular. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Reluctance and hysteresis motors are the types of which electrical motor? 1 - Φ synchronous motor. 3 - Φ induction motor. DC motor. Stepper motor. 1 - Φ synchronous motor. 3 - Φ induction motor. DC motor. Stepper motor. ANSWER DOWNLOAD EXAMIANS APP
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