Analog Electronics
LC oscillators are used for produce a waveform with frequency ranging from

 1MHz to 500 MHz
 100 KHz to 500 MHz
 1MHz to 100 GHz
 1 KHz to 1 MHz

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Analog Electronics
Pinch-off voltage in a JFET is

 the gate to source voltage that gives zero drain current.
 the gate to source voltage that gives unity drain current.
 the drain voltage that gives zero drain current.
 the drain voltage that gives infinite drain current.

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