Which term refers to electronic devices that have no moving parts?

Which term refers to electronic devices that have no moving parts?

• A. Band-pass
• B. Power Supply Circuits
• C. Solid-state
• D. Band-reject

Answer: (C)

Solid-state refers to electronics built from semiconductor devices that have no moving parts. Signals are controlled using components like diodes, transistors, and integrated circuits, rather than mechanical switches, relays, or vacuum tubes with filaments. Because there are no moving components, solid-state devices tend to be smaller, more reliable, lighter, and less prone to wear. The other terms describe what a circuit does (for example, filtering by frequency) or the purpose of a circuit (such as providing power), rather than describing the absence of moving parts. So the term that best captures the idea of no moving parts is solid-state.

Solid-state refers to electronics built from semiconductor devices that have no moving parts. Signals are controlled using components like diodes, transistors, and integrated circuits, rather than mechanical switches, relays, or vacuum tubes with filaments. Because there are no moving components, solid-state devices tend to be smaller, more reliable, lighter, and less prone to wear. The other terms describe what a circuit does (for example, filtering by frequency) or the purpose of a circuit (such as providing power), rather than describing the absence of moving parts. So the term that best captures the idea of no moving parts is solid-state.