Transformers The iron core is used to ______of the transformer. Provide tight magnetic coupling Reduce core loss None of the listed here Increase the wight Provide tight magnetic coupling Reduce core loss None of the listed here Increase the wight ANSWER DOWNLOAD EXAMIANS APP
Transformers A step up transformer increases Voltage Power Frequency Current Voltage Power Frequency Current ANSWER DOWNLOAD EXAMIANS APP
Transformers To step 110 V ac down to 20 V ac, the turns ratio must be 0.018 0.18 5.5 18 0.018 0.18 5.5 18 ANSWER DOWNLOAD EXAMIANS APP
Transformers For the parallel operation of single phase transformers it is necessary that they should have same polarity same kVA rating same efficiency same number of turns on the secondary side. same polarity same kVA rating same efficiency same number of turns on the secondary side. ANSWER DOWNLOAD EXAMIANS APP
Transformers When a 6 V battery is connected across the primary of a transformer with a turns ratio of 8, the secondary voltage is 0 V 6 V 0.75 V 48 V 0 V 6 V 0.75 V 48 V ANSWER DOWNLOAD EXAMIANS APP
Transformers A no-load test is performed on a transformer to determine magnetising current efficiency core loss magnetising current and loss copper loss magnetising current efficiency core loss magnetising current and loss copper loss ANSWER DOWNLOAD EXAMIANS APP
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