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| Figure 1-1 Electrical supply from generator to customer showing transformer applications and typical operating voltages. |

| The diagram of the hydraulic jack in Fig. 1-2 shows that a total force of 10 lbs. applied to one side of the jack can lift a weight of 100 lbs. on the other. The first piston, however, must be pushed down 10 in. in order that the weight of 100 lbs. be lifted a distance of 1 in. Thus a force of 10 lbs. has been transformed into one of 100 lbs. |

| In a transformer, the forces exerted correspond to the voltage while the |

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