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.
- Band pass
- Band reject
- All pass
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.
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