Transformers The primary and secondary of a transformer are ______ coupled. Electrically and magnetically Magnetically Electrically None of the listed here Electrically and magnetically Magnetically Electrically None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers If a transformer has 50 turns in the primary winding and 10 turns in the secondary winding, what is the reflective resistance if the secondary load resistance is 250 ? 62500 Ω 250 Ω 6250 Ω 25 Ω 62500 Ω 250 Ω 6250 Ω 25 Ω ANSWER DOWNLOAD EXAMIANS APP
Transformers In an auto transformer, the primary and secondary are _____ coupled. Magnetically as well as electrically Only magnetically Only electrically None of the listed here Magnetically as well as electrically Only magnetically Only electrically None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers A common method of cooling a power transformer is air blast cooling Any of these natural air cooling oil cooling air blast cooling Any of these natural air cooling oil cooling ANSWER DOWNLOAD EXAMIANS APP
Transformers The temperature rise of transformer is directly proportional to _______ None of the listed here Apparent power Reactive power Leakage reactance None of the listed here Apparent power Reactive power Leakage reactance ANSWER DOWNLOAD EXAMIANS APP
Transformers The approximate efficiency of a large transformer is 65% 80% 95% 50% 65% 80% 95% 50% ANSWER DOWNLOAD EXAMIANS APP
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