State the working principle of solenoid valve with neat sketch

State the working principle of solenoid valve with neat sketch
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Principle of Operation: * A solenoid is used for translating ON/OFF electrical signals to ON/OFF mechanical movements and normally used as a linear actuator. * As shown in fig (b) above, when the coil is energized, the core is pulled inside * The coil, and the amount of force by which the core is pulled mainly depends upon the number of coils and the amount of current flowing in the circuits. * The cut way section is shown in fig (c) above, the operation of the solenoid actuator. * The spring return plunger is held in the upper position when the coil is electrically de-energized. * When the voltage is applied to the solenoid frame magnetic field is produced in the solenoid frame. 

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