Street Lighting

Street lighting is a crucial aspect of urban infrastructure, providing visibility and safety for pedestrians and drivers during nighttime hours. The lighting system consists of multiple lamps strategically placed along roads and streets. These lamps are connected in a particular configuration to ensure efficient and reliable operation. The question asks about the type of connection used for street lighting lamps.

Parallel Connection

The correct answer to the question is option 'b', parallel connection. In a parallel connection, each lamp is connected individually to the power supply. This means that the positive terminal of each lamp is connected to the positive terminal of the power supply, and the negative terminal of each lamp is connected to the negative terminal of the power supply.

Advantages of Parallel Connection

There are several advantages to using a parallel connection for street lighting lamps:

1. Independent Operation: Each lamp operates independently of the others. If one lamp fails or is removed, the rest of the lamps continue to function without any significant impact on the overall lighting system.

2. Better Reliability: Parallel connection offers better reliability because if one lamp fails, the others remain operational. This ensures that street lighting is not completely compromised in the event of a single lamp failure.

3. Easy Maintenance: In a parallel connection, each lamp can be easily accessed and replaced individually without affecting the operation of other lamps. This simplifies maintenance and reduces the downtime required for repairs.

4. Uniform Brightness: Parallel connection ensures that each lamp receives the same voltage from the power supply. As a result, all lamps produce a similar level of brightness, ensuring uniform illumination along the street.

Conclusion

In conclusion, street lighting lamps are connected in parallel. This configuration offers independent operation, better reliability, easy maintenance, and uniform brightness. Parallel connection is the most practical and efficient way to connect the lamps in a street lighting system.