Electrical Machines If peak value of phase mmf is F max , then peak value of the rotating field caused by three phase is (3/2)Fmax. Fmax. (1/2)Fmax. 3Fmax. (3/2)Fmax. Fmax. (1/2)Fmax. 3Fmax. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which type of single phase induction motor is having the highest power factor at full load ? Split phase type. Shaded pole type. Capacitor start. Capacitor run type. Split phase type. Shaded pole type. Capacitor start. Capacitor run type. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The frequency of voltage generated by an alternator having 8 poles and rotating at 250 rpm is 25 Hz. 50 Hz. 16.67 Hz. 60 Hz. 25 Hz. 50 Hz. 16.67 Hz. 60 Hz. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Scott connections are used for three phase to single phase transformation. single phase to three phase transformation. three phase to two phase transformation. any of the above. three phase to single phase transformation. single phase to three phase transformation. three phase to two phase transformation. any of the above. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the field of a dc shunt motor gets opened while the motor is running, then the motor will attain dangerously high speed armature current will drop armature will oscillate about original speed as the mean speed motor will become slow. motor will attain dangerously high speed armature current will drop armature will oscillate about original speed as the mean speed motor will become slow. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The stator core of a 3 - Φ induction motor is laminated in order to reduce the eddy current loss. weight of the stator. hysteresis loss. both of the above. eddy current loss. weight of the stator. hysteresis loss. both of the above. ANSWER DOWNLOAD EXAMIANS APP
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