Transformers Two things which are same for primary and secondary of transformer are ______ Ampere turns and voltage per turns Currents and induced voltages None of the listed here Resistance and leakage reactances Ampere turns and voltage per turns Currents and induced voltages None of the listed here Resistance and leakage reactances ANSWER DOWNLOAD EXAMIANS APP
Transformers In a step-down transformer, there is a change of 15 A in the load current. This results in change of supply current of more than 15 A None of these 15 A less than 15 A more than 15 A None of these 15 A less than 15 A ANSWER DOWNLOAD EXAMIANS APP
Transformers The permissible flux density in case of cold rolled grain oriented steel is around 1.7 Wb/m² 3.7 Wb/m² 4.7 Wb/m² 2.7 Wb/m² 1.7 Wb/m² 3.7 Wb/m² 4.7 Wb/m² 2.7 Wb/m² ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following 3 phase connections of transformer create disturbances in communication systems Delta/Delta Delta/Star Star/Delta Star/Star Delta/Delta Delta/Star Star/Delta Star/Star ANSWER DOWNLOAD EXAMIANS APP
Transformers The no load primary current is about ______of full load primary current. 3-5% Above 40% 30-40% 15-30% 3-5% Above 40% 30-40% 15-30% ANSWER DOWNLOAD EXAMIANS APP
Transformers The eddy current loss in a transformer is directly proportional to _______. The flux density in the core Square of thickness of core lamination Thickness of core lamination The supply frequency The flux density in the core Square of thickness of core lamination Thickness of core lamination The supply frequency ANSWER DOWNLOAD EXAMIANS APP
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