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It's an emergency cut off in case something happens to the operator. One example is the switch in the drivers cab of a train. So long as the switch is activated (by pressure from the drivers hand) - the train will move. If the driver releases the switch - the train automatically applies the brakes.

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Does closing a switch allows electrical charges to flow in a circuit?

Closing a switch makes a closed circuit Opening a switch opens, or breaks the circuit


What happens when you connect the line wire from the switch to the load wire from the wall?

This is what the purpose of a switch is. It connects the "hot" wire to the load. When this is done the load becomes energized.


What is the purpose of SPST switch connected in the field circuit of the generator?

The purpose of an SPST (Single Pole Single Throw) switch connected in the field circuit of a generator is to control the excitation of the generator. By opening or closing the switch, the operator can enable or disable the flow of current to the field windings, which directly affects the generator's output voltage and reactive power. This allows for safe operation and maintenance, as well as the ability to adjust the generator's performance as needed. Additionally, it helps in protecting the generator from potential overloads or faults.


In a circuit the purpose of a switch is to?

In a circuit, the purpose of a switch is to control the current flow to the load by opening the circuit (off) or closing the circuit (on). When the circuit is open, the is no complete loop through which the current can flow. When the switch closes the circuit, it restores the loop, and thus allows the current to flow.


Gas furnace it has 3 switches one n the fan cage and two in the wiring box does anyone what they are for?

The switch on the fan cage is likely the fan switch to control the fan manually. The two switches in the wiring box could be the power switch for the furnace and a safety switch for emergency shutoff. It is important to consult the furnace manual or a professional to confirm the exact purpose of each switch.

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