Electrical Machines A transformer has maximum efficiency at 3/4 load. The ratio of iron loss and full load copper loss is 9/16. 4/3. 16/9. 3/4. 9/16. 4/3. 16/9. 3/4. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines No load primary current in a transformer lags behind applied voltage somewhat less than 90à leads the applied voltage by exactly 90Â& lags behind applied voltage by exactly 90Â&am leads the applied voltage somewhat less than 90Ã& lags behind applied voltage somewhat less than 90à leads the applied voltage by exactly 90Â& lags behind applied voltage by exactly 90Â&am leads the applied voltage somewhat less than 90Ã& ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The principle of operation of a 3 - Φ induction motor is almost similar to that of repulsion start induction motor. capacitor start induction motor. synchronous motor. transformer with secondary short circuited. repulsion start induction motor. capacitor start induction motor. synchronous motor. transformer with secondary short circuited. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The slip of an induction motor normally does not depend on which of the following? Synchronous speed. Shaft torque. Rotor speed. Core loss component. Synchronous speed. Shaft torque. Rotor speed. Core loss component. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Maximum power developed by a synchronous motor depends on supply voltage and excitation supply voltage and load angle supply voltage, load angle and excitation excitation and load angle supply voltage and excitation supply voltage and load angle supply voltage, load angle and excitation excitation and load angle ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature of a DC motor is laminated to reduce hysteresis loss. copper loss. eddy current loss. friction and windage loss. hysteresis loss. copper loss. eddy current loss. friction and windage loss. ANSWER DOWNLOAD EXAMIANS APP
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