Which term best describes capacitors that are constructed with fixed plate geometry and protective covering?

Which term best describes capacitors that are constructed with fixed plate geometry and protective covering?

• A. Variable Capacitors
• B. Open Capacitors
• C. Shorted Capacitors
• D. Fixed Capacitors

Answer: (D)

When classifying capacitors by how they’re built, the key idea is whether the capacitance can be changed or stays the same. Capacitors with plates that are fixed in place and enclosed in a protective housing have a constant geometry, so their capacitance remains essentially the same in normal use. The protective covering also shields the plates from moisture, dust, and mechanical damage, contributing to stable performance and reliable leakage characteristics. This combination describes fixed capacitors. Movable-plate designs are used when the capacitance needs to be changed, which is not the case here, so they’re not describing these components. Terms like open or shorted refer to circuit conditions, not construction, so they don’t fit as a description of the device type.

When classifying capacitors by how they’re built, the key idea is whether the capacitance can be changed or stays the same. Capacitors with plates that are fixed in place and enclosed in a protective housing have a constant geometry, so their capacitance remains essentially the same in normal use. The protective covering also shields the plates from moisture, dust, and mechanical damage, contributing to stable performance and reliable leakage characteristics. This combination describes fixed capacitors.

Movable-plate designs are used when the capacitance needs to be changed, which is not the case here, so they’re not describing these components. Terms like open or shorted refer to circuit conditions, not construction, so they don’t fit as a description of the device type.