A 41 voltage lsquo step-down transformer is connected to a


1. A 4:1 voltage ‘ step-down ' transformer is connected to a 110 V a.c. supply. If the current drawn from this supply is 100 mA, calculate the secondary voltage, current and power.

2. A transformer has 450 primary turns and 80 secondary turns. It is connected to a 240 V a.c. supply. Calculate

(a) the secondary voltage, and

(b) the primary current when the transformer is supplying a 20 A load.

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Electrical Engineering: A 41 voltage lsquo step-down transformer is connected to a
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