distribution transformer is connected to a 2,300 V, 60 Hz ac source with its primary windings equal to 1,200 turns. If the secondary voltage is 230 V, and the cross sectional area of the iron is 22.86 cm2 , calculate the a) mutual flux, b) maximum flux density, and c) number of secondary turns and the ratio of transformation.

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A: A 25 cycle transformer means frequency =25 Hz N1 = 2250    N2 = 150 Flux =0.0264 weber

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A: Solution

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Q: The no-load current of a transformer is 15 at a power factor of 0.2 when connected to a 460-V, 50-Hz…

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A: The transformer problem on basic turn ratio can be solved easily as shown below.

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A: It is given that: For single-phase transformer: V1=200 VV2=100 VS1-ϕ=10 KVAf= 50 Hz

Single Phase Transformer

A single-phase transformer is a type of power transformer. It is an electrical device that accepts converts the single phase alternating power into single phase alternating power. In this power conversion the voltage is stepped up or down. If the voltage is stepped up, the current will be stepped down and if the voltage is stepped down, the current will be stepped up.