BJT Amplifiers and Oscillators MCQs
Practice free BJT Amplifiers and Oscillators multiple-choice questions with instant answer feedback and step-by-step solutions. Click an option to check yourself, reveal the full explanation, and work through all 446 questions — no login required.
Question 163easy
The power output of an audio system is 18 W. For a person to notice an increase in the output (loudness or sound intensity) of the system, what must the output power be increased to?
Question 164easy
The output of a microphone is rated at -52 db. The reference level is 1 V under specified sound conditions. What is the output voltage of this microphone under the same sound conditions?
Question 165easy
The number of stages that can be directly coupled is limited because
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Question 166easy
The value of emitter capacitor CE in a multistage amplifier is about
Question 167easy
If the output of an amplifier is 10 V and 100 mV from the output is fed back to the input, then feedback fraction is
Question 168easy
The gain of an amplifier without feedback is 100 db. If a negative feedback of 3 db is applied, the gain of the amplifier will become
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Question 169easy
If the feedback fraction of an amplifier is 0.01, then voltage gain with negative voltage feedback is approximately
Question 170easy
If voltage feedback (negative) is applied to an amplifier, its output impedance
Question 171easy
When negative voltage feedback is applied to an amplifier, its bandwidth