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? 88 V 7.3 V 73 V 880 V 88 V 7.3 V 73 V 880 V ANSWER DOWNLOAD EXAMIANS APP
Transformers When load on a transformer is decreased, ______loss is decreased Eddy current Copper Friction Hysteresis Eddy current Copper Friction Hysteresis ANSWER DOWNLOAD EXAMIANS APP
Transformers A step up transformer increases Power Current Frequency Voltage Power Current Frequency Voltage ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer operates poorly at very low frequencies because _____ Primary reactance is too much increased Permeability of core is increased None of the listed here Magnetising current is abnormally high Primary reactance is too much increased Permeability of core is increased None of the listed here Magnetising current is abnormally high ANSWER DOWNLOAD EXAMIANS APP
Transformers A common method of colling a power transformer is Natural air cooling Any of the listed here Air blast cooling Oil cooling Natural air cooling Any of the listed here Air blast cooling Oil cooling ANSWER DOWNLOAD EXAMIANS APP
Transformers The primary winding of a transformer has 110 V ac across it. What is the secondary voltage if the turns ratio is 8? 8,800 V 88 V 880 V 8.8 V 8,800 V 88 V 880 V 8.8 V ANSWER DOWNLOAD EXAMIANS APP
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