Auxiliary contacts can be mounted on which type of components?

• A. Transformers
• B. Starters
• C. Both A and B
• D. None of the above

Answer: (B)

Auxiliary contacts are used in conjunction with various electrical devices to provide additional switching capabilities, feedback, or operational functions. In the context of starters, auxiliary contacts serve an important function. They can be used for control circuits, indicating when the starter is active, or for interlocking purposes to ensure safe operation. For instance, when the starter engages, auxiliary contacts can close to start other devices or indicate the state of the system.

While transformers are crucial components in electrical systems, they generally do not utilize auxiliary contacts for their operation. Instead, transformers primarily function to change voltages and are not designed for additional control or switching tasks that auxiliary contacts would typically provide.

Thus, the choice focusing on starters is particularly valid, as this is where auxiliary contacts are commonly and effectively applied to enhance operational functionality.