Transformers A certain transformer has a turns ratio of 1 and a 0.85 coefficient of coupling. When 2 V ac is applied to the primary, the secondary voltage is 1 V 1.7 V 0 V 0.85 V 1 V 1.7 V 0 V 0.85 V ANSWER DOWNLOAD EXAMIANS APP
Transformers The turns ratio required to match an 80 source to a 320 load is 2 4 20 80 2 4 20 80 ANSWER DOWNLOAD EXAMIANS APP
Transformers The primary and secondary of a transformer are ______ coupled. Magnetically None of the listed here Electrically Electrically and magnetically Magnetically None of the listed here Electrically Electrically and magnetically ANSWER DOWNLOAD EXAMIANS APP
Transformers If a power transformer is operated at very high frequencies, then ______ Primary will draw large power None of the listed here Primary reactance is too much increased Core losses will be excessive Primary will draw large power None of the listed here Primary reactance is too much increased Core losses will be excessive ANSWER DOWNLOAD EXAMIANS APP
Transformers An isolation transformer has primary to secondady turns ratio of 2:1 Can be any ratio 1:1 1:2 2:1 Can be any ratio 1:1 1:2 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 ? 6250 Ω 250 Ω 25 Ω 62500 Ω 6250 Ω 250 Ω 25 Ω 62500 Ω ANSWER DOWNLOAD EXAMIANS APP
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