Which of the following voltages is outside the range commonly used by DC motors in the described EV context?

• A. 96 to 192 volts
• B. 12 to 24 volts
• C. 48 to 100 volts
• D. 300 to 600 volts

Answer: (D)

The voltages used for DC motors in EVs are chosen to match the system’s architecture and safety needs, usually staying within ranges that fit the vehicle’s electrical design. A range of 300 to 600 volts sits well into high‑voltage traction territory, which is not the typical setting for the DC motors described in this context. In the described EV setup, DC motors are commonly operated at much lower voltages, such as 12–24 V for auxiliary motors and up to around the mid‑hundreds for some subsystem motors. Therefore, 300–600 V is outside the usual range for those DC motors in this scenario. The other ranges listed align more with the common levels seen in various EV components.