Name several types of electrical devices that would be considered intermittent loads on an electrical system.

Intermittent loads are characterized by their operation only at certain times rather than continuously utilizing electrical power. The correct answer identifies landing gear and radio transmitters as examples of devices that fall into this category.

Landing gear systems operate intermittently during takeoff and landing cycles. They require significant power only during their deployment and retraction, making them an intermittent load as they are not continuously drawing power while the aircraft is in flight or sitting on the ground in a static state.

Radio transmitters also exemplify intermittent loads; they do not continuously transmit and only draw power when actively broadcasting. Thus, they answer the question correctly by providing devices that only utilize electrical power during specific operational phases instead of a constant draw like the options that highlight heating elements and light bulbs or battery chargers, which typically exhibit more constant usage.