Concept:Identify the device that does not need a capacitor for its normal operation.
Explanation:Ceiling fans and water pumping machines use single-phase motors.
These motors need capacitors to start and run smoothly.
Television sets use capacitors in their power supply and internal circuits.
An electric iron works mainly with a heating coil.
A heating coil is a purely resistive element.
It does not require a capacitor to function.
Therefore, electric irons are the exception among the listed devices.
Answer:C. electric irons