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Switches 101

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Questions and Answers

Which type of switch has three terminals, with two ON positions and one OFF position?

Single Pole Single Throw Switch (SPST)
Double Pole Double Throw Switch (DPDT)
Single Pole Double Throw Switch (SPDT) (correct)
Triple Pole Double Throw Switch (TPDT)

What is the basic ON and OFF switch consisting of one input contact and one output contact?

Single Pole Single Throw Switch (SPST) (correct)
Double Pole Double Throw Switch (DPDT)
Triple Pole Double Throw Switch (TPDT)
Single Pole Double Throw Switch (SPDT)

Which type of switch can either make (ON) or break (OFF) the load?

Single Pole Double Throw Switch (SPDT)
Double Pole Double Throw Switch (DPDT)
Single Pole Single Throw Switch (SPST) (correct)
Triple Pole Double Throw Switch (TPDT)

What are the two possible configurations for the contacts of an SPST switch?

<p>Normally open or normally closed (B)</p> Signup and view all the answers

What is the main function of a switch?

<p>To complete or break the path of the current (A)</p> Signup and view all the answers

Flashcards

SPDT Switch

A switch with three terminals, two ON positions, and one OFF position.

SPST Switch

A simple switch with one input and one output contact that can either complete or break the circuit.

OFF State (SPST)

The state of a switch when the circuit is not closed, and current cannot flow.

ON State (SPST)

The state of a switch when the circuit is closed, and current can flow.

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Function of a Switch

The main function of a switch is to control the flow of electricity by either completing or breaking an electrical circuit.