Communication Systems - Engineering

Q1:

Consider the following statements as regards noise
  1. If Gaussian noise is applied at input of a rectifier, the output is not gaussian
  2. The noise encountered on a telephone line consists of short, pulse type disturbances whose amplitude distribution is not Gaussian
  3. Shot noise results from random emission of electrons from a cathode
  4. Shot noise results from phenomenon associated with the flow of current across semi conductor junctions
Which of the above are correct?

A 1, 2, 3, only

B 1, 2, 4 only

C 1, 2, 3, 4

D 2, 3 only

ANS:C - 1, 2, 3, 4

No answer description is available.