Small motors are usually operated at

• A. 110 V
• B. 480 V
• C. 220/240 V
• D. 24 V DC

Answer: (C)

Small motors in water system equipment are typically powered from around 230 volts. This voltage level is standard for many small AC motors, offering enough power with manageable wiring and insulation requirements. Higher voltages like 480V are used for larger industrial motors, while 110V (or 120V) is common for consumer devices and light loads but doesn’t provide as much power for pumps and similar small-motor applications. 24V DC is mainly used for control circuits or very small DC motors, not as the primary supply for standard small motors.