Week -2
Ans1)
A solenoid is an electromagnetic device through which a magnetic field produced by electric current, in turn, induces a force on the plunger or rod.
In this model, the left side circuit is an electrical circuit connected to a repeating signal and the right side circuit is a mechanical circuit that is connected to the scope and shows the change in position of the plunger & velocity of the plunger. (Refer image-1)
The position of the plunger is traced on the graph as an output(refer image-2)
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IMAGE-2

Ans-2)
In this model, the repeating source is attached to the controlled temperature source, The Fan condition ON & OFF is governed by the temperature. Red light will glow when fan is OFF (i.e, Temp < 25deg Celsius, refer IMAGE-3) & green light will glow when fan is ON (i.e, temp > 25 deg Celsius, refer IMAGE-4).
Repeating signal has time step of 10sec.
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IMAGE-4
