### Analog Filters

1. Compare analog filters with digital filters.
2. Operating characteristics of simple analog filters, such as RC, LC, RL, RLC, Chebychev filters

### Solved Example:

#### 9940-01

Find the cut-off frequency for an RC low pass filter of R = 8.2 $\Omega$ and C = 0.0033 $\mu$F. (UPPSC AE Electrical Dec 2020)

### Solved Example:

#### 9940-02

A simple low pass RC filter having a cut-off frequency of 1 kHz is connected to a constant ac source of 10 V. Calculate C if R = 10 k$\Omega$ (CIL MT Electrical: 2020)

### Solved Example:

#### 9940-03

$G(s) = \dfrac{1}{(1 + sRC)}$ in a RC network represents _______: (BSNL JE (TTA) Sep 2016 Shift I)

### Solved Example:

#### 9940-04

For attenuation of high frequencies, we should use: (EKT Computer Science Paper II : 02/2015)

### Solved Example:

#### 9940-05

Consider a low-pass filter module with a pass-band ripple of $\delta$ in the gain magnitude. If M such identical modules are cascaded, ignoring the loading effects, the pass-band ripple of the cascade is: (GATE IN 2015)