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17 February, 08:01

A transformer connected to a 120-V (rms) ac line is to supply 13,000 V (rms) for a neon sign. To reduce shock hazard, a fuse is to be inserted in the primary circuit; the fuse is to blow when the rms current in the secondary circuit exceeds 8.50 mA. (a) What is the ratio of secondary to primary turns of the transformer

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  1. 17 February, 09:07
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    N2 / N1 = V2 / V1

    = 13000V / 120V

    = 108
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