Transformers The mutual inductance when k = 0.65, L1 = 2 H, and L2 = 5 H is 2 mH 4 μH 2 μH 8 μH 2 mH 4 μH 2 μH 8 μH ANSWER DOWNLOAD EXAMIANS APP
Transformers The steel used for transformer core has Low hysteresis loss High silicon content High permeability All of the listed here Low hysteresis loss High silicon content High permeability All of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers The no load ratio of a 50 Hz single phase transformer is 6000/250 V. The maximum flux in the core is 0.06 Wb. What is the number of primary turns? 900 210 450 350 900 210 450 350 ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer has full load copper loss of 400 W. The copper loss at half full load will be _____. 200 W None of the listed here 400 W 100 W 200 W None of the listed here 400 W 100 W ANSWER DOWNLOAD EXAMIANS APP
Transformers When the secondary of a transformer is short circuited, the primary inductance _______ Remians unchanged Is decreased None of the listed here Is increased Remians unchanged Is decreased None of the listed here Is increased ANSWER DOWNLOAD EXAMIANS APP
Transformers No-load current of a transformer has has high magnitude and high power factor has small magnitude and high power factor has high magnitude and low power factor has small magnitude and low power factor has high magnitude and high power factor has small magnitude and high power factor has high magnitude and low power factor has small magnitude and low power factor ANSWER DOWNLOAD EXAMIANS APP
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