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27 June, 10:00

A transformer has a primary coil with 600 turns and a secondary coil

with 300 turns. If the output voltage is 320 volts, what is the input

voltage?

A. 8 volts

B. 150 volts

C. 640 volts

D. 600 volts

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Answers (1)
  1. 27 June, 11:14
    0
    Number of turns in the primary Np = 600

    Number of turns in the secondary Ns = 300

    Output voltage Es = 320 volts

    Input voltage Ep = ?

    Assuming the transformer to be ideal,

    Np/Ns = Ep/Es

    Ep/Es = 600/300 = 2

    Ep = 320*2 = 640 volts
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