What is an advantage of a DC electric motor in drones?

• A. Saves fuel.
• B. Increases maintenance.
• C. Requires more energy.
• D. Heavier than combustion engines.

Answer: (A)

Electric propulsion in drones uses stored battery energy rather than burning fuel, so there’s no fuel consumption during flight. That makes saving fuel the primary advantage. In practice, DC electric motors usually offer simple, reliable operation with fewer moving parts than combustion engines, which contributes to overall efficiency and maintenance benefits, but the standout point for this question is that no fuel is burned. The idea that they require more energy or are heavier than combustion engines isn’t an advantage and isn’t the trait being highlighted here.