Question

Automatic funtioninig of street light is done by

Answer 1

Answer:

Automatic street light system is a simple concept which uses transistor as a switch. By this system manual works are completely removed. It automatically switches on lights when the light goes below ambient light. This is done using LDR senses the light.

Answer 2

Answer:

With the help of solar panel and transistors or sensors.

Explanation:

The automatic street lights are lighted using the solar power. During day time the solar panel connected to the street light charge's up the battery. A light sensor is placed to sense the light around the street light as soon as there is no light i.e. in evening the sensors activates the power supply from the battery and lighten up the bulb.

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