Electrical Machines In dc motors, under leading pole tips flux density will--------? decrease increase None of these either increase or decrease decrease increase None of these either increase or decrease ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A compound motor has tertiary winding. both shunt and series field winding. only series field winding. only shunt field winding. tertiary winding. both shunt and series field winding. only series field winding. only shunt field winding. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two transformers with identical rating, are designed with flux densities of 1.2 and 1.4 Wb / m2 respectively. The weight of first transformer per kVA is less than that of second transformer. none of these. equal to that of second transformer. more than that of second transformer. less than that of second transformer. none of these. equal to that of second transformer. more than that of second transformer. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the field connection of a DC Shunt Motor is changed then motor will not run. it will run in same direction. it will run in same direction by slowly. it will run in opposite direction. motor will not run. it will run in same direction. it will run in same direction by slowly. it will run in opposite direction. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following is/are effects of armature reaction? increases the design cost increase the maintenance and repair All of these increase the iron loss increases the design cost increase the maintenance and repair All of these increase the iron loss ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The constant losses in transformer is/are both 2 and 3. copper loss. hysteresis loss. eddy current loss. both 2 and 3. copper loss. hysteresis loss. eddy current loss. ANSWER DOWNLOAD EXAMIANS APP
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