AMPP Cathodic Protection Technician (CP2) Practice Exam

Question: 1 / 675

The purpose of a transformer is to step up or step down what type of supply voltage?

Circuit breaker, DC

The purpose of a transformer is specifically to adjust alternating current (AC) voltage levels, stepping them up (increasing voltage) or stepping them down (decreasing voltage) as required for various applications. Transformers operate based on electromagnetic induction, which is effective only with AC since it involves changing magnetic fields.

When examining the context of the available options, it becomes clear that a transformer is not associated with direct current (DC) supply voltage; therefore, the association with circuit breakers or fuses in the context of DC is not relevant to the operation of a transformer. The only relevant option correctly relates to transformers and AC, making the understanding of their function in altering voltage levels clear and focused.

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Fuse, DC

Transformer, AC

Central processing unit, AC

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