Question:medium
An amplifier has an open-loop gain of \(100\) and feedback factor of \(0.05\). The closed-loop gain is approximately
An amplifier has an open-loop gain of \(100\) and feedback factor of \(0.05\). The closed-loop gain is approximately
Show Hint
For a negative feedback amplifier,
\[
\boxed{
A_f=\frac{A}{1+A\beta}
}
\]
where \(A\) is the open-loop gain and \(\beta\) is the feedback factor.
Updated On: Jul 14, 2026
- \(20\)
- \(50\)
- \(100\)
- \(200\)
Show Solution
The Correct Option is B
Solution and Explanation
Was this answer helpful?
0
Top Questions on Analog Electronics
- Consider the diode circuit shown below. The diode, D, obeys the current-voltage characteristic \(I_D = I_s(\exp(V_D/nV_T) - 1)\). The circuit is biased so that voltage \(V>0\) and current \(I<0\). If you had to design this circuit to transfer maximum power from the current source (\(I_1\)) to a resistive load (not shown) at the output, what values for R1 and R2 would you choose? A. Small \(R_1\), B. Large \(R_1\), C. Small \(R_2\), D. Large \(R_2\). Choose the correct answer from the options given below:
- CUET (PG) - 2025
- Electronics Engineering
- Analog Electronics
- Crossover distortion behavior is characteristic of
- CUET (PG) - 2025
- Electronics Engineering
- Analog Electronics
- In the following limiter circuit, the input voltage \(V_i = 10 \sin(100 \pi t)V\) is applied. Assume that the diode drop is 0.7 V when it is forward biased and the Zener breakdown voltage is 6.8 V. The maximum and minimum values of the output voltage, respectively, are
- CUET (PG) - 2025
- Electronics Engineering
- Analog Electronics
- Assuming \(V_{CEsat} = 0.2\) V and \(\beta = 50\), the minimum base current (\(I_{Bmin}\)) required to drive the transistor in the figure to saturation is
- CUET (PG) - 2025
- Electronics Engineering
- Analog Electronics
- Want to practice more? Try solving extra ecology questions todayView All Questions