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Difficulty: EasySwitches and Relays

A Single-Pole, Single-Throw (SPST) switch is capable of opening and closing two separate, electrically isolated circuits simultaneously.

Answer: Answer

Answer

False. A Single-Pole, Single-Throw (SPST) switch controls only one individual circuit.
The statement is false because the pole count specifies how many distinct circuits a switch controls. A Single-Pole (SP) switch controls exactly one circuit path. Operating two separate, electrically isolated circuits simultaneously requires a Double-Pole (DP) switch, such as a DPST switch.

Step-by-Step Solution

1
Define the meaning of 'pole' in switch terminology.
The number of poles indicates how many separate, isolated electrical circuits the switch can control at one time.
Understanding switch nomenclature requires distinguishing between poles (circuits controlled) and throws (contact positions per pole).
2
Evaluate the capability of a Single-Pole (SP) switch against the statement.
A single-pole switch has only one set of contacts and can only control a single circuit.
To simultaneously switch two independent circuits, a double-pole (DP) configuration with a shared mechanical actuator is required.

Key Concept

Switch Poles and Throws Nomenclature
Estimated Time:30s
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Topics

Switches and Relays

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