contact arm

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Explanation of "Contact Arm"

Definition:
A "contact arm" is a noun that refers to a part of a machine or device. It is a conducting arm that moves (or rotates) over fixed contacts (which are stationary parts) and connects with an outlet. This connection allows electricity or signals to flow through.

Usage Instructions

• The term is mostly used in technical contexts, especially in electronics or machinery.
• You can use "contact arm" when discussing how certain electrical devices work.

Example

• "In the old record player, the contact arm moved across the vinyl, allowing the needle to read the grooves and produce sound."

Advanced Usage

• In discussions about engineering or electronics, you might describe how a contact arm is essential for the functioning of various devices, such as circuit breakers or electric switches.

Word Variants

• Contact: This can refer to the action of touching or communicating with someone or something.
• Arm: In this context, it means a mechanical part that can move.

Different Meanings

• "Contact" can also mean a physical touch or connection between people or things. For example, "I made contact with my friend after a long time."
• "Arm" can refer to a limb of the body or a part of a structure (like the arm of a chair).

Synonyms

• Conducting arm: emphasizes the function of conducting electricity.
• Pivot arm: if the arm pivots around a point.
• Moving contact: refers to the function of the arm in making electrical contact.

Idioms and Phrasal Verbs

• Make contact: This idiom means to connect or communicate with someone.

  • Example: "I need to make contact with the supplier to discuss the order."

• Arm oneself with: This phrasal verb means to prepare oneself with tools or information.

  • Example: "Before the meeting, I armed myself with all the necessary data."

Summary

In summary, a "contact arm" is a crucial part in many electrical devices, allowing for the flow of electricity by connecting moving and stationary parts.

Academic

Noun

1. contact consisting of a conducting arm that rotates over a series of fixed contacts and comes to rest on an outlet

Synonyms

• wiper
• wiper arm