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 ? 25 Ω 250 Ω 6250 Ω 62500 Ω 25 Ω 250 Ω 6250 Ω 62500 Ω ANSWER DOWNLOAD EXAMIANS APP
Transformers Losses which occur in rotating electric machines and do not occur in trans formers are friction and windage losses magnetic losses hysteresis and eddy current losses copper losses friction and windage losses magnetic losses hysteresis and eddy current losses copper losses ANSWER DOWNLOAD EXAMIANS APP
Transformers The amount of copper in the primary is _______that of secondary. Greater than Smaller than About the same as None of the listed here Greater than Smaller than About the same as None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers A Buchholz relay can be installed on Oil cooled transformer Air-cooled transformer Auto transformer Welding transformer Oil cooled transformer Air-cooled transformer Auto transformer Welding transformer ANSWER DOWNLOAD EXAMIANS APP
Transformers A tap changer is used on a transformer for None of the listed here Adjustment in primary voltage Adjustment in both primary and secondary Adjustments in secondary voltage None of the listed here Adjustment in primary voltage Adjustment in both primary and secondary Adjustments in secondary voltage ANSWER DOWNLOAD EXAMIANS APP
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 0 V 0.85 V 1.7 V 1 V 0 V 0.85 V 1.7 V 1 V ANSWER DOWNLOAD EXAMIANS APP
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