Transformers A no-load test is performed on a transformer to determine magnetising current and loss efficiency core loss copper loss magnetising current magnetising current and loss efficiency core loss copper loss magnetising current ANSWER DOWNLOAD EXAMIANS APP
Transformers The eddy current loss in a transformer is directly proportional to _______. The supply frequency Thickness of core lamination Square of thickness of core lamination The flux density in the core The supply frequency Thickness of core lamination Square of thickness of core lamination The flux density in the core ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer operates poorly at very low frequencies because _____ Permeability of core is increased Magnetising current is abnormally high None of the listed here Primary reactance is too much increased Permeability of core is increased Magnetising current is abnormally high None of the listed here Primary reactance is too much increased ANSWER DOWNLOAD EXAMIANS APP
Transformers The power transformer is a constant Power device Main flux device Current device Voltage device Power device Main flux device Current device Voltage device ANSWER DOWNLOAD EXAMIANS APP
Transformers The permissible flux density in case of cold rolled grain oriented steel is around 1.7 Wb/m² 2.7 Wb/m² 3.7 Wb/m² 4.7 Wb/m² 1.7 Wb/m² 2.7 Wb/m² 3.7 Wb/m² 4.7 Wb/m² ANSWER DOWNLOAD EXAMIANS APP
Transformers When the secondary of a transformer is short circuited, the primary inductance _______ Is increased None of the listed here Is decreased Remians unchanged Is increased None of the listed here Is decreased Remians unchanged ANSWER DOWNLOAD EXAMIANS APP
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