ECT 125 HW#7 — 1 August 19, 2014 NAME: 1. A transformer with a 250mA AC primary current and a 4:1 turns ratio has a secondary current of? 1 A 250 mA 4 A 400 mA None of the above 2. A transformer that has 1500 windings around the core for the primary and 250 secondary windings will have a turns ratio of ___ to 1. 3. A transformer with a 40-V AC primary voltage and a 3:5 turns ratio has an output voltage of 24 V 40 V 4 V 66.7 V 4. If a transformer has a turns ratio of 1: 5 and a secondary voltage of 20 V AC, the primary voltage will be? 5 V 20 V 1.25 V 80 V None of the above 5. A resistive load of 500 Ohm is connected across the secondary windings of a 2:1 transformer. If the primary voltage is 50 V AC, what will be the secondary current? 100 mA 2 mA 50 mA 1 mA None of the above
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