Question:
A circuit that uses an amplifier with passive filter elements is called as a(n)
A circuit that uses an amplifier with passive filter elements is called as a(n)
Show Hint
In signal processing, active filters are often used when amplifiers are combined with passive components to control frequency response.
Updated On: May 5, 2025
- Relaxation oscillator
- Signal generator
- Differential amplifier
- Active filter
Hide Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
A circuit that uses an amplifier along with passive filter elements (such as resistors, capacitors, and inductors) is called an **active filter**. Active filters use amplifiers to enhance the filtering capability, often used to process analog signals and remove unwanted frequencies. Therefore, the correct answer is option (4).
Was this answer helpful?
0
0
Top Questions on Digital Signal Processing
- The continuous-time unit impulse signal is applied as an input to a continuous-time linear time-invariant system \( \mathcal{S} \). The output is observed to be the continuous-time unit step signal \( u(t) \). Which one of the following statements is true?
- GATE EE - 2025
- Signals and Systems
- Digital Signal Processing
Let \( G(s) = \frac{1}{(s+1)(s+2)} \). Then the closed-loop system shown in the figure below is:
- GATE EE - 2025
- Signals and Systems
- Digital Signal Processing
- Let continuous-time signals \( x_1(t) \) and \( x_2(t) \) be defined as:
\[ x_1(t) = \begin{cases} 1, & t \in [0, 1] \\ 2 - t, & t \in [1, 2] \\ 0, & \text{otherwise} \end{cases} \quad \text{and} \quad x_2(t) = \begin{cases} t, & t \in [0, 1] \\ 2 - t, & t \in [1, 2] \\ 0, & \text{otherwise} \end{cases} \]
Consider the convolution \( y(t) = x_1(t) * x_2(t) \). Then
\[ \int_{-\infty}^{\infty} y(t)\,dt =\ ? \]- GATE EE - 2025
- Signals and Systems
- Digital Signal Processing
- A continuous time periodic signal \( x(t) \) is given by: \[ x(t) = 1 + 2\cos(2\pi t) + 2\cos(4\pi t) + 2\cos(6\pi t) \] If \( T \) is the period of \( x(t) \), then evaluate: \[ \frac{1}{T} \int_0^T |x(t)|^2 \, dt \quad \text{(round off to the nearest integer).} \]
- GATE EE - 2025
- Signals and Systems
- Digital Signal Processing
The open-loop transfer function of the system shown in the figure is: \[ G(s) = \frac{K s (s + 2)}{(s + 5)(s + 7)} \] For \( K \geq 0 \), which of the following real axis point(s) is/are on the root locus?
- GATE EE - 2025
- Signals and Systems
- Digital Signal Processing
View More Questions
Questions Asked in AP PGECET exam
- If the system is stable, the response is smooth and non-oscillatory (damping coefficient, $\xi>1$), the response is referred to as
- AP PGECET - 2024
- Instrumentation and Process Control
- If initial conditions for a system are inherently zero, what does it physically mean?
- AP PGECET - 2024
- Instrumentation and Process Control
- Thermal diffusivity of a material ($ \alpha $) is defined as:
- AP PGECET - 2024
- Heat Transfer
- The catalyst used in the low-pressure Ziegler process for polyethylene manufacture _____________________
- AP PGECET - 2024
- Chemical Technology
- The major chemical recovered from the black liquor in Kraft Pulp Process is
- AP PGECET - 2024
- Chemical Technology
View More Questions