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6 April, 01:23

The step-down transformer gives a current of 10A at 24v if the primary voltage is 240v calculate the

1_primary current

2_the power input

3_the power output

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Answers (1)
  1. 6 April, 03:59
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    You probably do this as a DC circuit which is not quite correct, but it will get you an answer. The study is a great deal more complicated.

    Problem One: Secondary Power.

    W = E * I

    E = 10 A

    I = 24V

    W = 24 * 10

    W = 240 Watts.

    Here's the thing you have to know. These transformers are 100% efficient (or are assumed so). So whatever wattage is in the secondary, it is the same as that in the primary.

    Primary Power = Secondary Power

    Secondary Power = 240 Watts

    Primary Power = 240 Watts

    W = E * I

    E = 240 volts

    W = 240 watts

    I = W/E = 240 / 240

    I = 1 Amp. Answer Part One

    Part Two

    Answered above. 240 watts.

    Part Three

    Answered above. 240 watts.

    Secondar
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