Buck-boost transformers are used when

A. The supply voltage matches the voltage required by the load.
B. The supply current matches the voltage required by the load.
C. The supply voltage does not match the voltage required by the load.
D. The supply current does not match the voltage required by the load.

Answer: C

Explanation:
  • A buck–boost transformer is a type of transformer used to make adjustments to the voltage applied to alternating current equipment. Buck–boost connections are used in several places such as uninterruptible power supply (UPS) units for computers and in the tanning bed industry.
  • A buck-boost transformer is a type of transformer which is primarily used to adjust the voltage level applied to various electric equipment. Buck-boost transformers are utilized in in several applications such as uninterruptible power supplies (UPS) units for computers.

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