Electrical Machines Hysteresis loop represents the area of total iron losses eddy current loss copper loss hysteresis loss total iron losses eddy 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. consists of short-circuited copper bars embedded in the field pole faces. both (A) and (B). are provided in a synchronous motor to make it self starting. are provided on the stator for improving power factor. consists of short-circuited copper bars embedded in the field pole faces. both (A) and (B). are provided in a synchronous motor to make it self starting. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The principal of starting of 3 - Φ IM is similar to synchronous motor. transformer with short-circuited secondary. repulsion motor type starting. capacitor run IM. synchronous motor. transformer with short-circuited secondary. repulsion motor type starting. capacitor run IM. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A transformer core is made up of a silicon steel laminations which has maximum flux density 1 Tesla. If it was cold rolled grain oriented its flux density increases to 1.6 Tesla. What is the saving in core size or area due to cold rolled grain oriented process? 60% 38% 68% 40% 60% 38% 68% 40% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines stepped cores are used in transformers in order to reduce iron loss. volume of iron. reluctance of core. volume of copper. iron loss. volume of iron. reluctance of core. volume of copper. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Eg (generated emf) and Eb (back emf) both are same. changes. different. none of above. same. changes. different. none of above. ANSWER DOWNLOAD EXAMIANS APP
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