Transformers directly out of the generating station step voltage in which direction?

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Multiple Choice

Transformers directly out of the generating station step voltage in which direction?

Explanation:
The situation at the generating station uses a step-up transformer to increase the voltage for transmission. The generator produces relatively low voltage, and the transformer ratio is greater than one, so the output voltage is higher than the input while the current is reduced. This up-stepping of voltage keeps the same power (P = VI) but lowers current, which minimizes losses in the transmission lines (I²R losses) and reduces voltage drop over long distances. Stepping the voltage up is essential for efficient bulk power transfer, so the correct direction is Up. Stepping down would be done later, near the load, and keeping the voltage constant wouldn’t achieve efficient long-distance transmission.

The situation at the generating station uses a step-up transformer to increase the voltage for transmission. The generator produces relatively low voltage, and the transformer ratio is greater than one, so the output voltage is higher than the input while the current is reduced. This up-stepping of voltage keeps the same power (P = VI) but lowers current, which minimizes losses in the transmission lines (I²R losses) and reduces voltage drop over long distances. Stepping the voltage up is essential for efficient bulk power transfer, so the correct direction is Up. Stepping down would be done later, near the load, and keeping the voltage constant wouldn’t achieve efficient long-distance transmission.

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