Transformers An isolation transformer has primary to secondady turns ratio of 2:1 Can be any ratio 1:2 1:1 2:1 Can be any ratio 1:2 1:1 ANSWER DOWNLOAD EXAMIANS APP
Transformers The noise produced by a transformer is termed as buzz hum ringing zoom buzz hum ringing zoom ANSWER DOWNLOAD EXAMIANS APP
Transformers The efficiency of a transformer, under heavy loads, is comparatively low because iron loss is increased considerably secondary output is much less as compared to primary input voltage drop both in primary and secondary becomes large copper loss becomes high in proportion to the output iron loss is increased considerably secondary output is much less as compared to primary input voltage drop both in primary and secondary becomes large copper loss becomes high in proportion to the output ANSWER DOWNLOAD EXAMIANS APP
Transformers If a power transformer is operated at very high frequencies, then ______ Core losses will be excessive Primary reactance is too much increased Primary will draw large power None of the listed here Core losses will be excessive Primary reactance is too much increased Primary will draw large power None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers If 25 W of power are applied to the primary of an ideal transformer with a turns ratio of 10, the power delivered to the secondary load is 25 W 2.5 W 250 W 0 W 25 W 2.5 W 250 W 0 W ANSWER DOWNLOAD EXAMIANS APP
Transformers The power transformer is a constant Main flux device Power device Voltage device Current device Main flux device Power device Voltage device Current device ANSWER DOWNLOAD EXAMIANS APP
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