An electrical-type fuel quantity indicating system includes which components?

The electrical-type fuel quantity indicating system operates based on the interaction between an indicator and a float-operated transmitter, which work together to provide accurate readings of fuel levels.

The float-operated transmitter typically consists of a buoyant float that moves with the fuel level in the tank. As the fuel level rises or falls, the float moves accordingly, which in turn alters the resistance in the transmitter circuit. This change in resistance is converted into an electrical signal that is sent to the indicator, allowing the pilot to read the fuel quantity on the gauge.

This combination of components is essential for ensuring that the fuel quantity readings are both precise and reliable, promoting safety and operational efficiency during flight. The other options do not effectively represent the basic components of an electrical fuel quantity indicating system, as they either include components that do not directly relate to fuel quantity measurement or omit the essential float-operated transmitter.