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Which of the following is not considered for quiescent operating point?

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Which of the following is not considered for quiescent operating point?

(a) DC collector-emitter voltage

(b) DC collector current

(c) DC base current

(d) DC input voltage

I had been asked this question in quiz.

I need to ask this question from Characteristics of Amplifier topic in section Transistor Biasing and Low Frequencies of Analog Circuits

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The correct choice is (d) DC input voltage

Best explanation: The quiescent point is the operating point of an amplifier where the DC condition of amplifier is constant. For that we have to make sure that DC collector-emitter voltage, DC collector current, DC base current are constant.

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