Transformers The permissible flux density in case of cold rolled grain oriented steel is around 3.7 Wb/m² 2.7 Wb/m² 4.7 Wb/m² 1.7 Wb/m² 3.7 Wb/m² 2.7 Wb/m² 4.7 Wb/m² 1.7 Wb/m² ANSWER DOWNLOAD EXAMIANS APP
Transformers The primary and secondary windings are wound on the top of each other in order to reduce ______ Iron losses Copper losses Winding resistance Leakage reactance Iron losses Copper losses Winding resistance Leakage reactance ANSWER DOWNLOAD EXAMIANS APP
Transformers The temperature rise of transformer is directly proportional to _______ Reactive power Leakage reactance None of the listed here Apparent power Reactive power Leakage reactance None of the listed here Apparent power 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 12 V 2,400 V 120 V 240 V 12 V 2,400 V 120 V ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer is an efficient device because it _______ Is a static device Uses inductive coupling Uses electric coupling Uses capacitive coupling Is a static device Uses inductive coupling Uses electric coupling Uses capacitive coupling ANSWER DOWNLOAD EXAMIANS APP
Transformers The turns ratio required to match an 80 source to a 320 load is 4 20 80 2 4 20 80 2 ANSWER DOWNLOAD EXAMIANS APP
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