What components define a start-stop station and how does it operate?

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Multiple Choice

What components define a start-stop station and how does it operate?

A start-stop station is defined by two momentary switches that control a coil in a control circuit: a normally open start pushbutton that energizes the run circuit, and a normally closed stop pushbutton that de-energizes it. When you press the start button, current flows to the coil, pulling in the contactor to start the motor. A holding contact (an auxiliary NO contact of the same coil) then closes and creates a path to keep the coil energized after you release the start button, so the motor keeps running. Pressing the stop button opens the circuit (since it’s normally closed), de-energizing the coil and stopping the motor; the holding contact also drops out, ensuring the circuit remains off until start is pressed again. This setup provides a simple, safe way to start and stop the machine with a momentary action and a maintained run state. The other options don’t fit because: the start pushbutton is normally open, not normally closed; a timer isn’t part of the basic start-stop definition; and the stop button is normally closed, not normally open.

A start-stop station is defined by two momentary switches that control a coil in a control circuit: a normally open start pushbutton that energizes the run circuit, and a normally closed stop pushbutton that de-energizes it. When you press the start button, current flows to the coil, pulling in the contactor to start the motor. A holding contact (an auxiliary NO contact of the same coil) then closes and creates a path to keep the coil energized after you release the start button, so the motor keeps running. Pressing the stop button opens the circuit (since it’s normally closed), de-energizing the coil and stopping the motor; the holding contact also drops out, ensuring the circuit remains off until start is pressed again. This setup provides a simple, safe way to start and stop the machine with a momentary action and a maintained run state.

The other options don’t fit because: the start pushbutton is normally open, not normally closed; a timer isn’t part of the basic start-stop definition; and the stop button is normally closed, not normally open.

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