P is step-up transformer because primary voltage (V p = 110 V) secondary voltage (V s = 110 V). Q is a step-up transformer because I s > I p In Figure 2, the primary voltage is smaller than the second voltage (5 Volts V sĭ. In Figure 1, the primary voltage is greater than the second voltage (20 Volts > 5 Volts) so that Figure 1 is a step-down transformer. The larger-gauge wire used in the secondary winding is necessary due to the increase in current. As a step-down unit, this transformer converts high-voltage, low-current power into low-voltage, high-current power. S tep-up transformer serves to raise the electrical voltage while the step-down transformer to reduce electrical voltage. This is a step-down transformer, as evidenced by the high turn count of the primary winding and the low turn count of the secondary. Figure 1 and 2 are a step-down transformerĭ. Figure 1 is a step-down transformer and figure 2 is a step-up transformerĬ. Figure 1 is a step-up transformer and figure 2 is a step-down transformerī. The equation of transformer’s efficiency :īased on the above figure, which of the following statements about the figure above is correct.Ī. Transformer Np Ns Vp Vs Ip Is 1 1000 120 12 0.4 2 2 80 8 20 2 2.5īased on the above table, if the efficiency of both transformers is the same, 50%, Determine N s and I p. According to figure below, what is the amount of the secondary loops of the transformer.Ĩ. Read : Resonance of sound wave - problems and solutionsħ.
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