Analog Electronics - Section 1
Analog Electronics - Section 1
| 1. | Figure shows the self bias circuit for CE amplifier and its equivalent circuit. VBB and RB respectively are |
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| 3. | The quiescent collector current IC, and collector to emitter voltage VCE in a CE connection are the values when |
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Answer: Option A Explanation: Quiescent-operation means operation when ac signal is not applied. |
| 4. | In a circuit of figure, Vs = 10 cos(ωt) power drawn by the 2Ω resistor is 4 watts. The power factor is
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Answer: Option C Explanation: |
Prms = 
I2 R 
I = 2A.| 5. | Study the circuit of figure and examine the following statements 1.It is an active low pass finer. 2.It is a second order filter. 3.The change in gain is 40 dB/decade. Which of the above statements are correct? |
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Answer: Option A Explanation: The circuit is a second order active low pass filter for which gain is 40 dB/decade. |
| 6. | An amplifier with loop gain Aβ will be more stable for value of Aβ as |
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Answer: Option B Explanation: A feedback amplifier is stable if loop gain is less than unity. More less, more stable, hence β will be more stable. |
| 7. | A half wave diode rectifier has a capacitance input filter. If input voltage is Vm sin ωt, PIV is |
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Answer: Option B Explanation: Because capacitor charge is retained. |
| 8. | DC amplifiers have a tendency to be unstable. |
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Answer: Option A Explanation: Due to drift. |