Electrical Machines At the instant of starting, the per unit slip of 3 - Φ induction motor is 1.0. 0.1. 0.05. 0.5. 1.0. 0.1. 0.05. 0.5. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Flashing the field of DC generator means creating residual magnetism by a DC source. making the magnetic losses forces parallel. neutralising residual magnetism. increasing flux density by adding extra turns of winding. creating residual magnetism by a DC source. making the magnetic losses forces parallel. neutralising residual magnetism. increasing flux density by adding extra turns of winding. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A synchorous generator connected to an infinite bus is over excited. Considering only the reactive power from the point view of the system the machine acts as None of these. A resistor. an inductor. A capacitor. None of these. A resistor. an inductor. A capacitor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The short circuit test on a transformer is conducted to obtain core loses only. eddy current loss. hysteresis loss. copper losses. core loses only. eddy current loss. hysteresis loss. copper losses. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The teeth in the armature of a DC machines are sometimes skewed. This is done to reduce vibrations. eddy electric current loss. copper loss. hysteresis loss. vibrations. eddy electric current loss. copper loss. hysteresis loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The damper windings also called the squirrel cage windings or damper grids are provided on the stator for improving power factor. both (A) and (B). are provided in a synchronous motor to make it self starting. consists of short-circuited copper bars embedded in the field pole faces. are provided on the stator for improving power factor. both (A) and (B). are provided in a synchronous motor to make it self starting. consists of short-circuited copper bars embedded in the field pole faces. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS