Which term describes a switch with two independent poles and two throws?

Which term describes a switch with two independent poles and two throws?

• A. DPDT
• B. DPST
• C. Micro Switch
• D. Relays

Answer: (A)

Two independent poles with two throws describes a switch that can operate two separate circuits at the same time, and for each circuit it can connect to one of two outputs. That configuration is called double pole double throw. The term DPDT neatly captures both aspects: two poles (two separate switch circuits) and two throws (each pole can connect to either of two terminals), giving four possible contact configurations. This is especially useful when you need to switch two signals together or, for example, reverse a motor's polarity by swapping which terminal each pole connects to. Other options don’t fit as precisely: a micro switch refers to a small, typically momentary switch type rather than a specific pole/throw count; a relay is a broader device that can use many contact configurations but isn’t itself defined by two poles and two throws; a double pole single throw would have two poles but only one throw per pole (not two throws).

Two independent poles with two throws describes a switch that can operate two separate circuits at the same time, and for each circuit it can connect to one of two outputs. That configuration is called double pole double throw. The term DPDT neatly captures both aspects: two poles (two separate switch circuits) and two throws (each pole can connect to either of two terminals), giving four possible contact configurations. This is especially useful when you need to switch two signals together or, for example, reverse a motor's polarity by swapping which terminal each pole connects to.

Other options don’t fit as precisely: a micro switch refers to a small, typically momentary switch type rather than a specific pole/throw count; a relay is a broader device that can use many contact configurations but isn’t itself defined by two poles and two throws; a double pole single throw would have two poles but only one throw per pole (not two throws).