Electronics and Communication Engineering - Exam Questions Papers - Discussion

Discussion Forum : Exam Questions Papers - Exam Paper 11 (Q.No. 25)
25.
A first order system will never be able to give a __________ response.
  1. Band pass
  2. Band reject
  3. All pass
Choose the correct option
1, 2 and 3 are true
1 and 3 are true, 2 is false
1 and 2 are false, 3 is true
1 and 2 are true, 3 is false
Answer: Option
Explanation:

The ideal response of a Band pass filter BRF and APF is as shown

So for BPF we require 0 at ω = 0, p i.e. at least 2 zeroes are required in the Transform.

Hence order has to be atleast 2.

Similarly for band reject filter order should be at least 2. Whereas APF has a constant amplitude.

Hence Zeroes in the function need not matter.

APF function is given as Hence first order can provide APF.

Discussion:
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