Transformers A tap changer is used on a transformer for Adjustments in secondary voltage Adjustment in both primary and secondary None of the listed here Adjustment in primary voltage Adjustments in secondary voltage Adjustment in both primary and secondary None of the listed here Adjustment in primary voltage ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following insulating materials can withstand the highest temperature safely? Cellulose Mica Asbestos Glass fibre Cellulose Mica Asbestos Glass fibre 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 100 W None of the listed here 400 W 200 W 100 W None of the listed here 400 W ANSWER DOWNLOAD EXAMIANS APP
Transformers Efficiency of a power transformer is of the order of 25 per cent 100 per cent 50 per cent 98 per cent 25 per cent 100 per cent 50 per cent 98 per cent 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? 350 210 450 900 350 210 450 900 ANSWER DOWNLOAD EXAMIANS APP
Transformers The primary and secondary of a transformer are ______ coupled. Electrically and magnetically None of the listed here Magnetically Electrically Electrically and magnetically None of the listed here Magnetically Electrically ANSWER DOWNLOAD EXAMIANS APP
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