Transformers A transformer with a 110 V primary has a 15:1 turns ratio. The load resistance, RL, is 120 . What is the approximate voltage across the load? 880 V 73 V 7.3 V 88 V 880 V 73 V 7.3 V 88 V ANSWER DOWNLOAD EXAMIANS APP
Transformers The effect of leakage flux in a transformer is to ______ None of the listed here Increase copper losses Cause voltage drop in the windings Decreases copper losses None of the listed here Increase copper losses Cause voltage drop in the windings Decreases copper losses ANSWER DOWNLOAD EXAMIANS APP
Transformers A common method of colling a power transformer is Natural air cooling Air blast cooling Oil cooling Any of the listed here Natural air cooling Air blast cooling Oil cooling Any of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers What is the approximate efficiency of large transformers? 95 % 65% 85% 75% 95 % 65% 85% 75% ANSWER DOWNLOAD EXAMIANS APP
Transformers The maximum efficiency of a distribution transformer is at 50% full load at 80% full load at full load at no load at 50% full load at 80% full load at full load at no load 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 0 W 250 W 25 W 2.5 W 0 W 250 W ANSWER DOWNLOAD EXAMIANS APP
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