State two functions of slug- tuned inductor and write the expression of self-inductance.

State two functions of slug- tuned inductor and write the expression of self-inductance.
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1 Answer

Answer :

It is kind of variable inductor.

 The value of inductance increases, when the slug is moved into the coil winding and decreases the resonant frequency.

 When the slug is moved out of the coil winding, the inductance decreases and resonant frequency of the tuned circuit increases.

Self-inductance (L)= N x φ /I
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