Transformers The hum in a transformer is mainly attributed to oil in the transformer magnetostriction load changes mechanical vibrations oil in the transformer magnetostriction load changes mechanical vibrations ANSWER DOWNLOAD EXAMIANS APP
Transformers When the turns ratio of a transformer is 20 and the primary ac voltage is 12 V, the secondary voltage is 240 V 2,400 V 120 V 12 V 240 V 2,400 V 120 V 12 V ANSWER DOWNLOAD EXAMIANS APP
Transformers Short circuit test of a transformer helps us to find its Full load cu loss Cu loss at no load None of the listed here Iron loss Full load cu loss Cu loss at no load None of the listed here Iron loss ANSWER DOWNLOAD EXAMIANS APP
Transformers The turns ratio required to match an 80 source to a 320 load is 20 4 80 2 20 4 80 2 ANSWER DOWNLOAD EXAMIANS APP
Transformers The permissible flux density in case of cold rolled grain oriented steel is around 4.7 Wb/m² 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 ANSWER DOWNLOAD EXAMIANS APP
Transformers The core type transformer provides _______ None of the listed here Much longer magnetic path Lesser average length per turn Shorter magnetic path None of the listed here Much longer magnetic path Lesser average length per turn Shorter magnetic path ANSWER DOWNLOAD EXAMIANS APP
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