Answer :
Final answer:
A buck-boost transformer is connected in series to deliver the proper voltage to the load when the supply voltage is changed ±15%.
Explanation:
A buck-boost transformer is a type of electrical transformer designed to provide either a step-up or step-down voltage transformation and is commonly used to stabilize and regulate voltage in electrical systems. It can be configured to act as either a buck transformer or a boost transformer depending on how it is connected.
A buck-boost transformer is connected in series to deliver the proper voltage to the load when the supply voltage needs to be changed by ±15%. In this configuration, the transformer steps up or steps down the voltage, depending on the direction of the voltage change, to compensate for the fluctuations in the supply voltage.
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