Which voltage range is typical for generating electric energy?

• A. 100-200 V
• B. 1000-2000 V
• C. 13200-24000 V
• D. 345000-161000 V

Answer: (C)

Generating electric energy is typically done at medium voltages, not at the very low household level or the very high transmission levels. The generator’s output is designed to be high enough to keep currents (and thus losses) reasonable, but not so high that insulation and machinery become impractical. In many plants the generator produces roughly 10 to 25 kilovolts, which corresponds to about 13,200 to 24,000 volts. This is the range where generators are commonly designed to operate before a step-up transformer boosts the voltage for transmission.

The 100-200 V range is what you’d see at end-use locations or small equipment, not generation. A range around 1,000-2,000 V is atypical for generator outputs in modern plants, though some older or special setups might be different. The very high range (hundreds of kilovolts) is used for transmission after the voltage is stepped up, not the generator’s own output. So the 13,200–24,000 V range best matches typical generator output.