Electronics and Communication Engineering - Exam Questions Papers

Consider the following network function

In order to make N(s) as rational network function, it is essential to include

For the polynomial P(s) = s⁵ + s⁴ + 2s³ + 2s² + 3s + 15 The number of roots which lie in the right half of the s plane is :

Noise with double-sided power spectral density of K overall frequencies is passed through a RC low pass filter with 3 dB cut-off frequency of f_c. The noise power at the filter output is

The energy stored in a magnetic field is given by

Which of the following describe the correct properties of an emitter follower circuit?

1. It is a voltage series feedback circuit.
2. It is a current series feedback circuit.
3. Its voltage gain in less than unity.
4. Its output impedance is very low.