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What type of transformer supplies electricity to series airport runway and street lighting circuits?

A. Buck-boost
B. Constant-current
C. Grounding
D. Autotransformer

Answer :

Final answer:

The appropriate transformer for supplying electricity to airport runway and street lighting circuits is the autotransformer. It operates efficiently, offering variable voltage outputs, which are essential in these applications. Other transformer types serve different functions and are not suitable for this specific use case.


Explanation:

Types of Transformers for Airport Runway and Street Lighting

In electrical engineering, there are various types of transformers used to manage voltage levels in different applications. For supplying electricity to series airport runway and street lighting circuits, the most appropriate type is the autotransformer.

An autotransformer is a type of transformer where a single winding acts as both the primary and secondary winding. It provides a variable voltage output while maintaining efficiency, making it ideal for applications like runway lighting and streetlights, which often require consistent voltage levels for safety and functionality.

Other transformer types listed, such as buck-boost transformers, are generally used for slightly different purposes such as voltage adjustment rather than the specific series circuit configurations used for lighting. Understanding the differences is crucial for ensuring that the correct transformer system is implemented for safe and reliable operation.


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