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Resistors are provided in Colpitts circuit is to __________

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Resistors are provided in Colpitts circuit is to __________

(a) Provide high impedance to oscillation

(b) Bias transistor

(c) Provide stability for tank circuit

(d) increase impedance for oscillation

I had been asked this question in an interview.

Question is taken from Colpitts Oscillator-1 topic in portion Oscillators of Analog Circuits

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Correct option is (b) Bias transistor

Explanation: Resistors are used to bias transistor to its DC operating point. Capacitor divider circuit provides input bias to the amplifying element.

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