Transformers A certain transformer has a turns ratio of 1 and a 0.85 coefficient of coupling. When 2 V ac is applied to the primary, the secondary voltage is 0.85 V 1 V 0 V 1.7 V 0.85 V 1 V 0 V 1.7 V ANSWER DOWNLOAD EXAMIANS APP
Transformers The output current corresponding to the maximum efficiency for a transformer having core loss of 200 W and equivalent resistance referred to secondary of 0.5 Ω is 15 A 10 A 20 A 5 A 15 A 10 A 20 A 5 A ANSWER DOWNLOAD EXAMIANS APP
Transformers Distribution transformers are generally designed for maximum efficiency around 90% load 25% load Zero load 50% load 90% load 25% load Zero load 50% load ANSWER DOWNLOAD EXAMIANS APP
Transformers Open circuit test on transformers is conducted to determine hysteresis losses core losses eddy current losses copper losses hysteresis losses core losses eddy current losses copper losses ANSWER DOWNLOAD EXAMIANS APP
Transformers The short circuit test helps us to find Cu loss at any desire load Iron loss at no load None of the listed here Cu loss at no load Cu loss at any desire load Iron loss at no load None of the listed here Cu loss at no load ANSWER DOWNLOAD EXAMIANS APP
Transformers The permissible flux density in case of cold rolled grain oriented steel is around 3.7 Wb/m² 1.7 Wb/m² 2.7 Wb/m² 4.7 Wb/m² 3.7 Wb/m² 1.7 Wb/m² 2.7 Wb/m² 4.7 Wb/m² ANSWER DOWNLOAD EXAMIANS APP
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