Transformers Which of the following insulating materials can withstand the highest temperature safely? Glass fibre Mica Cellulose Asbestos Glass fibre Mica Cellulose Asbestos ANSWER DOWNLOAD EXAMIANS APP
Transformers The temperature rise of transformer is directly proportional to _______ Leakage reactance Reactive power Apparent power None of the listed here Leakage reactance Reactive power Apparent power None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers In a step-down transformer, there is a change of 15 A in the load current. This results in change of supply current of None of these more than 15 A 15 A less than 15 A None of these more than 15 A 15 A less than 15 A ANSWER DOWNLOAD EXAMIANS APP
Transformers A tap changer is used on a transformer for None of the listed here Adjustments in secondary voltage Adjustment in primary voltage Adjustment in both primary and secondary None of the listed here Adjustments in secondary voltage Adjustment in primary voltage Adjustment in both primary and secondary 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? 900 450 210 350 900 450 210 350 ANSWER DOWNLOAD EXAMIANS APP
Transformers The primary and secondary of a transformer are ______ coupled. Magnetically Electrically None of the listed here Electrically and magnetically Magnetically Electrically None of the listed here Electrically and magnetically ANSWER DOWNLOAD EXAMIANS APP
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